Edwards Diffuision Pumps Diffstak
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Scientific vapor pumps 3 PAGE 1 Vapor pumps for scientific instruments and R&D applications Diffusion pumps – technology and applications Diffstak Diffstak installation EO50/60 Diffstak combined outfits Vapor pump accessories Shop online at www.bocedwards.com 3-2 3-4 3-12 3-14 3-15 3-15 VAPOR PUMPS FOR SCIENTIFIC INSTRUMENTS AND R&D APPLICATIONS Diffusion Vapor pumps pumps for–scientific technology instruments and applications and R&D applications Scientific and R & D applications require special vapor pumps and accessories. It is important to minimize any backstreaming of the vapor pump fluid, and the number of elastomer seals used in system design needs to be kept to a minimum, to give clean pumping with minimal outgassing. For bench-top or transportable instruments, compact air-cooled pumps are essential. BOC Edwards offers a range of vapor pumps and accessories which are designed to meet these needs. Measurement methods 3 PAGE 2 The methods used to measure pressure and flow have become more accurate in recent years allowing much tighter controls over system conditions. The speeds and throughputs quoted in the catalog for the diffusion pumps are based on actual pump data derived from measurements made with the latest technology total pressure gauges and mass flow transducers in accordance with ISO standards. Some confusion could arise with previously published speed and throughput figures for older designed pumps where, historically, pressure measurements were made with partial pressure gauges like the McLeod gauge. This older gauge can indicate speeds up to 30% higher than that expected using state of the art total pressure gauges. Further confusion could arise from the measurement standards chosen to determine pumping performance. In the case of AVS (American Vacuum Society), this can indicate speeds and throughput up to 15% higher than ISO figures. Historical industry practice meant that in considering the above, and potential gauge accuracy of ± 15%, it was possible to have speeds quoted 60% higher than might be expected using modern total pressure measurement equipment. This should be carefully considered when comparing specifications for older derived data published for similarly sized competitor pumps and BOC Edwards diffusion pumps. Diffstak vapor diffusion pumps The compact water-cooled Diffstak pumps with an integral cooled baffle offer exceptionally clean pumping with very low backstreaming, reduced outgassing, and a reduction in the number of elastomer seals required for installation. The Diffstak design has been proven over many years with thousands of pumps installed. They are supplied in three types: standard, cryo-cooled and unvalved. (C – collar model pumps). The standard Diffstak pumps have integral high vacuum valves and watercooled baffles. The cryo-cooled versions (CR – model pumps) have a liquid nitrogen cooled baffle supplied from a reservoir attached to the pump and are intended for pumping heavy vapor loads. Valves on both versions are supplied as either manually operated (M-model pumps) or pneumatically operated (P-model pumps). When comparing pumping speeds, note that the speeds quoted for valved Diffstaks are the speeds above the high vacuum valve, taking full account of the valve's impedance. The unvalved Diffstaks are for systems requiring the highest possible ultimate vacuum or for those which do not need a high vacuum valve. All sizes are available with ISO flanges while two sizes are also available with CF flanges. (F – ConFlat® model pump). The complete range is shown in the table below. Refer to the following pages for full technical data for each of the pumps and also for full details of installations, spares and accessories. STANDARD DIFFSTAK 63/150M or P 100/300M or P 160/700M or P 250/2000M or P CRYO-COOLED DIFFSTAK CR63/150M or P CR100/300M or P CR160/700M or P CR250/2000M or P UNVALVED DIFFSTAK ISO FLANGE CF FLANGE 63/150C 100/300C 160/700C 250/2000C – 100/300F 160/700F – Fast cycling on unvalved systems For fast cycling pumping systems we recommend our TV range of water or air-cooled pumps. Primarily designed for the evacuation of cathode ray tubes, they will also suit other fast cycling pumping applications. Ultimate vacuum The ultimate vacuum of a vapor pump is the lowest pressure achieved in tests on the pump, measured above the inlet of the pump (or above the high vacuum valve for the Diffstaks). The ultimate vacuum depends on: the type of fluid used in the pump; the temperature of the inlet baffle; the amount of outgassing from the vacuum system; and the amount of leakage into the system. Critical backing pressure The critical backing pressure is the highest pressure that a pump can tolerate in the backing line. If the pressure is higher than the critical backing pressure, the pump may stall. The critical backing pressure depends on: the pump design; the power of the heaters; and the fluid used in the vapor pump. Backstreaming Backstreaming is the direct movement of molecules of pump fluid vapor from the pump toward the vacuum system. All BOC Edwards pumps are specially designed to minimize backstreaming; the pumps have a guard ring (sometimes called a cool-cap) fitted above the top jet. The guard ring condenses vapor molecules moving from the top jet toward the vacuum system. In some sensitive applications, backstreaming may be very undesirable; you can minimize backstreaming if you fit a baffle or a trap to the top of the pump. Accessories For vapor pump accessories see page 3-15. APPLICATIONS • • • • • • • • • Mass spectrometry Gas analysis Leak detection Thin film coating High vacuum systems Lamp evacuation Surface physics Small vacuum ovens Vacuum isolation/cryo transfer EO50/60 diffusion pump The EO50/60 is a compact, fast warm-up, air-cooled diffusion pump and makes a good choice for small, low-cost systems. The high helium pumping speed from a pump only 176 mm high is a particular benefit for GCMS applications. For EO2, EO4, EO6 diffusion pumps contact BOC Edwards. ConFlat® is a registered trademark of Varian, Inc Shop online at www.bocedwards.com DATA SUMMARY VAPOR PUMPS PUMP Catalog page Pumping speed Nitrogen Hydrogen Hydrogen (baffled) Minimum backing pump displacement Inlet connection Backing connection 1 63/150M 63/150P 3-4 63/150C l s-1 135 150 ls -1 200 225 ls -1 – – 3 -1 5 5 ISO63 NW10 ISO63 NW10 100/300M 100/300P 3-6 100/300C 100/300F 3-7 m h PUMP l s-1 280 300 Hydrogen l s-1 500 535 Hydrogen (baffled) l s-1 – – m3h-1 5 5 ISO100 NW25 ISO100 / 6 in NW25 160/700M 160/700P 3-8 160/700C 160/700F 3-9 PUMP Catalog page Pumping speed Nitrogen l s-1 700 760 Hydrogen l s-1 1300 1410 Hydrogen (baffled) Minimum backing pump displacement Inlet connection 1 l s-1 – – m3h-1 12 12 ISO160 ISO160 / 8 in 250/2000M 250/2000P 3-10 250/2000C PUMP Catalog page Pumping speed Nitrogen l s-1 2000 2130 Hydrogen l s-1 3000 3200 Hydrogen (baffled) l s-1 – – m3h-1 40 40 ISO250 NW40 ISO250 NW40 Minimum backing pump displacement1 Inlet connection Backing connection PUMP Catalog page Pumping speed Air l s-1 60 Air (baffled) l s-1 27 Nitrogen l s-1 – Hydrogen l s-1 70 l s-1 50 EO50/60 3-14 Hydrogen (baffled) Minimum backing pump displacement Inlet connection Backing connection 3-11 1 3 -1 m h 1 NW50 flange NW10 flange For maximum throughput. (63/150M and 63/150P – For applications where maximum throughput is not required, use an RV3.) Shop online at www.bocedwards.com 3 PAGE 3 SCIENTIFIC VAPOR PUMPS Catalog page Pumping speed Nitrogen Minimum backing pump displacement1 Inlet connection Backing connection 1 3-5 (3.70) 70 50 (2.75) 85 (1.97) 65 360 (14.17) 4 x Ø9 (0.35) x Ø110 (4.33) (2.56) (3.35) 131 (5.16) 216 (8.50) 17 105 94 (0.67) 213 (8.38) Ø130 (5.12) (4.13) STANDARD DIFFSTAK 63/150M AND 63/150P Ø76 (2.99) 125 (4.92) Diffstak 63/150M TECHNICAL DATA 85 (2.56) (3.35) 220 (8.66) Standard Diffstak 63/150P (2.75) 65 Standard Diffstak 63/150M Diffstak 70 50 (1.97) 4 x Ø9 (0.35) x Ø110 (4.33) 360 (14.17) 105 (4.13) PAGE 4 94 (3.70) 135 (5.31) 213 (8.38) Ø130 (5.12) 17 (0.67) 3 Ø76 M – model pumps have a manually operated high vacuum isolation valve. P – model pumps have a pneumatically actuated high vacuum isolation valve. Pumping speed nitrogen 135 l s-1 hydrogen 200 l s-1 Minimum backing pump displacement1 5 m3h-1 Recommended backing pump RV5 Recommended fluid Santovac® 5 Fluid charge (dry) 60 ml Inlet connection compatible with ISO63 Backing connection NW10 Cooling water connection 6 mm compression fittings Heater power 0.45 kW Minimum cooling-water flow at 20 °C 42 l h-1 2 Pneumatic connections 6 mm coupling x !/4 BSP male stud Pneumatic actuating pressure2 Minimum 2.4 bar / 35 psi Maximum 6.9 bar / 100 psi Weight 63/150M 8 kg 63/150P 9 kg 1 For maximum throughput. For applications where maximum throughput is not required, use an RV3. 2 63/150P only Diffstak 63/150P The BRV and PVK valves shown in these dimension diagrams are optional accessories. ORDERING INFORMATION PRODUCT DESCRIPTION Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 Heater (0.45 kW) 110-125 V 210-225 V 230-250 V Valve plate "O" ring VIT0335 Valve shaft seal "O" ring VIT00121 Valve blanking plate "O" ring VIT01121 Backing "O" ring assembly (fluoroelastomer) Drain and filler plug "O" rings1 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 3 ORDERING NUMBER Diffstak 63/150M 110-125 V 1-ph 50/60 Hz B34431976 210-225 V 1-ph 50/60 Hz B34431977 230-250 V 1-ph 50/60 Hz B34431978 Diffstak 63/150P 110-125 V 1-ph 50/60 Hz B34432976 210-225 V 1-ph 50/60 Hz B34432977 230-250 V 1-ph 50/60 Hz B34432978 Supplied with: NW10 elbow, NW10 centering-ring, NW10 clamp, water pipe couplings and ferrules, inlet ISO 63 Co-Seal SPARES CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) FLUID 10 (2.99) 125 (4.92) ORDERING NUMBER H01700182 H01700186 H01700191 H02106050 H02106010 H02106012 C10511395 H02123027 l s -1 1 Pack of 5 10 For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. 2 Diffstak 63/150 10 1 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa Santovac® is a registered trademark of Santovac Fluids Inc, USA Shop online at www.bocedwards.com UNVALVED DIFFSTAK 63/150C 70 Ø95 (3.74) (2.76) 85 (3.35) 155 (6.10) (2.99) 334 (13.15) 148 (5.83) 179 (7.05) 69 (2.72) 50 (1.97) Ø76 94 (3.70) 122 (4.80) 192 (7.56) ORDERING INFORMATION PRODUCT DESCRIPTION ORDERING NUMBER Unvalved Diffstak 63/150C SPARES Heater (0.45 kW) 110-125 V 210-225 V 230-250 V TECHNICAL DATA C – model pumps have an unvalved ISO collar inlet flange. Pumping speed nitrogen 150 l s-1 hydrogen 225 l s-1 Minimum backing pump displacement1 5 m3h-1 Recommended backing pump RV5 Recommended fluid Santovac® 5 Fluid charge (dry) 60 ml Inlet connection ISO63 Backing connection NW10 Cooling water connection 6 mm compression fittings Minimum cooling-water flow at 20 °C 42 l h-1 Heater power 0.45 kW Weight 5 kg 1 For information on the Cryo-cooled version, contact BOC Edwards. CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) FLUID l s -1 10 10 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 3 2 Diffstak 63/150C 10 1 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 H01700182 H01700186 H01700191 For information about spares, refer to standard Diffstak 63/150 (see page 3-4). For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. For maximum throughput. Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 ORDERING NUMBER -2 0 mbar Pa Shop online at www.bocedwards.com SCIENTIFIC VAPOR PUMPS Diffstak 63/150C 110-125 V 1-ph 50/60 Hz B34433976 210-225 V 1-ph 50/60 Hz B34433977 230-250 V 1-ph 50/60 Hz B34433978 Supplied with: NW10 elbow, NW10 centering-ring, NW10 clamp, water pipe couplings and ferrules, inlet ISO 63 Co-Seal. 3 PAGE 5 (4.8) 271 (10.67) 106 86 108 (4.25) (4.17) 40 (1.58) (3.39) 122 276 (10.87) Ø165 (6.5) 35 (1.38) STANDARD DIFFSTAK 100/300M AND 100/300P 437 (17.2) 8 x Ø9 (0.35) x Ø145 (5.71) Ø111 (4.37) 127 (5.0) 183 (7.2) Diffstak 100/300M TECHNICAL DATA For maximum throughput 2 100/300P only Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 l s -1 10 10 275 (10.83) 122 (4.8) 183 (7.2) Diffstak 100/300P The BRV and PVK valves shown in these dimension diagrams are optional accessories. ORDERING INFORMATION PRODUCT DESCRIPTION ULTIMATE PRESSURE (mbar) 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 3 ORDERING NUMBER Diffstak 100/300M 110-125 V 1-ph 50/60 Hz B34631976 210-225 V 1-ph 50/60 Hz B34631977 230-250 V 1-ph 50/60 Hz B34631978 Diffstak 100/300P 110-125 V 1-ph 50/60 Hz B34632976 210-225 V 1-ph 50/60 Hz B34632977 230-250 V 1-ph 50/60 Hz B34632978 Supplied with: NW25 elbow, NW25 centering-ring, NW25 clamp, water pipe couplings and ferrules, inlet ISO 100 Co-Seal Heater (0.65 kW) 110-125 V 210-225 V 230-250 V Valve plate "O" ring VIT0346 Valve shaft seal "O" ring VIT00121 Valve blanking plate "O" ring VIT01121 Backing "O" ring assembly (fluoroelastomer) Drain and filler plug "O" rings1 ORDERING NUMBER H01700199 H01700097 H01700190 H02106061 H02106010 H02106012 C10514395 H02123027 1 Pack of 5 For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. 2 Diffstak 100/300 10 86 (3.39) 127 (5.0) SPARES CRITICAL BACKING PRESSURE (mbar) FLUID Ø110 (4.33) M – model pumps have a manually operated high vacuum isolation valve. P – model pumps have a pneumatically actuated high vacuum isolation valve. Pumping speed nitrogen 280 l s-1 hydrogen 500 l s-1 Minimum backing pump displacement1 5 m3h-1 Recommended backing pump RV5 or RV8 Recommended fluid Santovac® 5 Fluid charge (dry) 125 ml Inlet connection compatible with ISO100 Backing connection NW25 Cooling water connection 6 mm compression fittings Heater power 0.65 kW Minimum cooling-water flow at 20 °C 60 l h-1 2 Pneumatic connections 6 mm coupling x ¼ BSP male stud Pneumatic actuating pressure2 Minimum 2.4 bar / 35 psi Maximum 6.9 bar / 100 psi Weight 100/300M 12 kg 100/300P 13 kg 1 106 (4.17) Standard Diffstak 100/300P 437 (17.2) Standard Diffstak 100/300M 40 (1.57) 8 x Ø9 (0.35) x Ø145 (5.71) 153 (6.02) 35 108 PAGE 6 (1.38) 127 (5.0) 276 (10.87) Ø165 (6.5) (4.25) 3 1 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa Shop online at www.bocedwards.com 127 (5.0) 40 (1.57) 122 (4.8) 86 (3.39) 414 (16.30) 177 (6.97) Ø111 (4.37) 206 (8.11) 84 (3.31) Ø130 (5.12) 216 (8.5) UNVALVED DIFFSTAK 100/300C AND 100/300F 127 (5.0) 159 (6.26) 252 (9.92) Diffstak 100/300C 3 1 For maximum throughput CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) FLUID Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 l s -1 10 10 122 (4.8) 86 (3.39) 127 (5.0) 159 (6.26) 252 (9.92) Diffstak 100/300F ORDERING INFORMATION PRODUCT DESCRIPTION ORDERING NUMBER Diffstak 100/300C 110-125 V 1-ph 50/60 Hz B34633976 210-225 V 1-ph 50/60 Hz B34633977 230-250 V 1-ph 50/60 Hz B34633978 Diffstak 100/300F 110-125 V 1-ph 50/60 Hz B34640976 210-225 V 1-ph 50/60 Hz B34640977 230-250 V 1-ph 50/60 Hz B34640978 Supplied with: NW25 elbow, NW25 centering-ring, NW25 clamp, water pipe couplings and ferrules inlet ISO Co-Seal (C version only). SPARES 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 435 (17.13) C – model pumps have an unvalved ISO collar inlet flange. F – model pumps are unvalved and have a copper compression gasket flange (ConFlat®). Pumping speed nitrogen 300 l s-1 hydrogen 535 l s-1 Minimum backing pump displacement1 5 m3h-1 Recommended backing pump RV5 or RV8 Recommended fluid Santovac® 5 Fluid charge (dry) 125 ml Inlet connection 100/300C ISO100 100/300F 6 inch Backing connection NW25 Cooling water connection 6 mm compression fittings Minimum cooling-water flow at 20 °C 60 l h-1 Heater power 0.65 kW Weight 100/300C 9 kg 100/300F 10 kg (1.57) Heater (0.65 kW) 110-125 V 210-225 V 230-250 V ORDERING NUMBER H01700199 H01700097 H01700190 3 For information about spares, refer to standard Diffstak 100/300 (see page 3-6). For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. 2 For information on the Cryo-cooled version, contact BOC Edwards. Diffstak 100/300C, F 10 1 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa Shop online at www.bocedwards.com SCIENTIFIC VAPOR PUMPS TECHNICAL DATA 198 (7.8) Unvalved Diffstak 100/300F 40 Ø109 (4.29) 227 (8.94) 105 (4.13) Unvalved Diffstak 100/300C PAGE 7 127 (5.0) 16 x Ø8.3 (0.33) x Ø130.2 (5.13) 216 (8.5) Ø152 (5.98) 192 (7.56) (4.88) (5.91) 124 150 123 (4.84) 610 (24.02) 8 x Ø11 (0.43) x Ø200 (7.87) 354 (13.94) 150 (5.91) 90 (3.54) 364 (14.33) Ø225 (8.86) 58 (2.28) STANDARD DIFFSTAK 160/700M AND 160/700P Ø157 (6.18) 170 (6.69) 218 (8.58) Diffstak 160/700M M – model pumps have a manually operated high vacuum isolation valve. P – model pumps have a pneumatically actuated high vacuum isolation valve. Pumping speed nitrogen 700 l s-1 hydrogen 1300 l s-1 Minimum backing pump displacement1 12 m3h-1 Recommended backing pump RV12 or E2M18 Recommended fluid Santovac® 5 Fluid charge (dry) 255 ml Inlet connection compatible with ISO160 Backing connection NW25 Cooling water connection 10 mm compression fittings Heater power 1.35 kW Minimum cooling-water flow at 20 °C 115 l h-1 2 Pneumatic connections 6 mm coupling x ¼ BSP male stud 2 Pneumatic actuating pressure Minimum 2.4 bar / 35 psi Maximum 6.9 bar / 100 psi Weight 160/700M 26 kg 160/700P 27 kg For maximum throughput 2 160/700P only CRITICAL BACKING PRESSURE (mbar) Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 l s -1 10 ULTIMATE PRESSURE (mbar) 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 4 3 330 (12.99) (3.50) 150 124 191 (4.88) (5.91) Ø157 (6.18) 170 (6.69) Diffstak 160/700P The BRV and PVK valves shown in these dimension diagrams are optional accessories. ORDERING INFORMATION PRODUCT DESCRIPTION ORDERING NUMBER Diffstak 160/700M 110-125 V 1-ph 50/60 Hz B34831976 210-225 V 1-ph 50/60 Hz B34831977 230-250 V 1-ph 50/60 Hz B34831978 Diffstak 160/700P 110-125 V 1-ph 50/60 Hz B34832976 210-225 V 1-ph 50/60 Hz B34832977 230-250 V 1-ph 50/60 Hz B34832978 Supplied with: NW25 elbow, NW25 centering-ring, NW25 clamp, water pipe couplings and ferrules, inlet ISO 160 Co-Seal Heater (one heater of each power is required) 110-125 V 0.35 kW 110-125 V 1 kW 210-225 V 0.35 kW 210-225 V 1 kW 230-250 V 0.35 kW 230-250 V 1 kW Valve plate "O" ring VIT1221 Valve shaft seal "O" ring VIT01111 Valve blanking plate "O" ring VIT01111 Backing "O" ring assembly (fluoroelastomer) Drain and filler plug "O" rings1 ORDERING NUMBER H01700102 H01700059 H01700107 H01700063 H01700113 H01700054 H02106221 H02106011 H02106011 C10514395 H02123027 1 Pack of 5 Diffstak 160/700 10 150 (5.91) 218 (8.58) SPARES FLUID 10 8 x Ø11 (0.43) x Ø200 (7.87) (7.52) TECHNICAL DATA 610 (24.02) Standard Diffstak 160/700P 1 192 (7.56) 123 (4.84) Ø225 (8.86) 89 490 (19.29) 58 (2.28) 3 PAGE 8 2 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. Shop online at www.bocedwards.com UNVALVED DIFFSTAK 160/700C AND 160/700F 192 (7.56) Ø180 (7.09) 90 (3.54) 287 (11.3) 150 (5.91) (6.14) 578 (22.76) 242 (9.53) 290 (11.42) 108 (4.25) 150 (5.91) Ø156 170 (6.69) PHOTO REQUIRED 218 (8.58) 355 (13.98) Diffstak 160/700C 3 192 (7.56) 90 TECHNICAL DATA 170 (6.69) C – model pumps have an unvalved ISO collar inlet flange. F – model pumps are unvalved and have a copper compression gasket flange (ConFlat®). Pumping speed nitrogen 760 l s-1 hydrogen 1410 l s-1 Minimum backing pump displacement1 12 m3h-1 Recommended backing pump RV12 or E2M18 Recommended fluid Santovac® 5 Fluid charge (dry) 250 ml Inlet connection 160/700C ISO160 160/700F 8 inch Backing connection NW25 Cooling water connection 10 mm compression fittings Minimum cooling-water flow at 20 °C 115 l h-1 Heater power 1.35 kW Weight 160/700C 18 kg 160/700F 20 kg 1 For maximum throughput FLUID l s -1 10 10 355 (13.98) Diffstak 160/700F ORDERING INFORMATION PRODUCT DESCRIPTION 3 ORDERING NUMBER Diffstak 160/700C 110-125 V 1-ph 50/60 Hz B34833976 210-225 V 1-ph 50/60 Hz B34833977 230-250 V 1-ph 50/60 Hz B34833978 Diffstak 160/700F 110-125 V 1-ph 50/60 Hz B34840976 210-225 V 1-ph 50/60 Hz B34840977 230-250 V 1-ph 50/60 Hz B34840978 Supplied with: NW25 elbow, NW25 centering-ring, NW25 clamp, water pipe couplings and ferrules, inlet ISO 160 Co-Seal (C version only). Heater (one heater of each power is required) 110-125 V 0.35 kW 110-125 V 1 kW 210-225 V 0.35 kW 210-225 V 1 kW 230-250 V 0.35 kW 230-250 V 1 kW 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 218 (8.58) SPARES CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 (5.91) 287 (11.3) 150 (6.14) 588 (23.15) 252 (9.92) 300 (11.81) 118 Unvalved Diffstak 160/700F PAGE 9 150 (5.91) Ø156 ORDERING NUMBER H01700102 H01700059 H01700107 H01700063 H01700113 H01700154 For information about spares, refer to standard Diffstak 160/700 (see page 3-8). For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-14; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. 2 For information on the Cryo-cooled version, contact BOC Edwards. Diffstak 160/700C, F 10 1 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa Shop online at www.bocedwards.com SCIENTIFIC VAPOR PUMPS Unvalved Diffstak 160/700C (4.65) 20 x Ø8.3 (0.33) x Ø181 (7.12) (3.54) Ø203 (7.99) 625 (24.61) 343 (13.5) 633 (24.92) 180 (7.09) 12 x Ø11 (0.43) x Ø310 (12.2) 408 (18.31) 769 (30.28) 212 (8.35) (13.19) 290 (11.42) 94 (3.7) Ø335 100 (3.94) 134 310 (5.28) (12.2) STANDARD DIFFSTAK 250/2000M AND 250/2000P Ø261 (10.28) 242 (9.53) 412 (16.22) Diffstak 250/2000M 290 (11.42) TECHNICAL DATA M – model pumps have a manually operated high vacuum isolation valve. P – model pumps have a pneumatically actuated high vacuum isolation valve. Pumping speed nitrogen 2000 l s-1 hydrogen 3000 l s-1 Minimum backing pump displacement1 40 m3h-1 Recommended backing pump E2M40 Recommended fluid Santovac® 5 Fluid charge (dry) 500 ml Inlet connection compatible with ISO250 Backing connection NW40 Cooling water connection 10 mm compression fittings Heater power 2.25 kW Minimum cooling-water flow at 20 °C 180 l h-1 2 Pneumatic connections 6 mm coupling x ¼ BSP male stud Pneumatic actuating pressure2 Minimum 2.4 bar / 35 psi Maximum 6.9 bar / 100 psi Weight 250/2000M 59 kg 250/2000P 60 kg 1 For maximum throughput. 2 250/2000P only CRITICAL BACKING PRESSURE (mbar) FLUID Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 l s -1 10 10 ULTIMATE PRESSURE (mbar) 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 4 590 (23.23) Ø261 (10.28) 242 (9.53) 412 (16.22) Diffstak 250/2000P The BRV and PVK valves shown in these dimension diagrams are optional accessories. ORDERING INFORMATION PRODUCT DESCRIPTION ORDERING NUMBER Diffstak 250/2000M 110-125 V 1-ph 50/60 Hz B35031976 210-225 V 1-ph 50/60 Hz B35031977 230-250 V 1-ph 50/60 Hz B35031978 Diffstak 250/2000P 110-125 V 1-ph 50/60 Hz B35032976 210-225 V 1-ph 50/60 Hz B35032977 230-250 V 1-ph 50/60 Hz B35032978 Supplied with: NW40 elbow, NW40 centering-ring, NW40 clamp, water pipe couplings and ferrules, inlet ISO 250 trapped "O" ring SPARES Heater (one heater of each power is required) 110-125 V 0.85 kW 110-125 V 1.4 kW 210-225 V 0.85 kW 210-225 V 1.4 kW 230-250 V 0.85 kW 230-250 V 1.4 kW Valve plate "O" ring VIT0449 Valve shaft seal "O" ring VIT1121 (pack of 2) Valve blanking plate "O" ring VIT1128 (pack of 2) Backing "O" ring assembly (fluoroelastomer) Drain and filler plug "O" rings (pack of 5) ORDERING NUMBER H01700140 H01700161 H01700134 H01700155 H01700137 H01700158 H02106093 H02106121 H02106128 C10516395 H02123027 For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. 3 Diffstak 250/2000 10 100 (3.94) 310 (12.2) 343 (13.5) 94 (3.7) 134 (5.28) 229 (9.02) Standard Diffstak 250/2000M 12 x Ø11 (0.43) x Ø310 (12.2) 180 (7.09) 465 (18.31) 769 (30.28) PAGE 10 212 3 (8.35) 724 (28.5) Ø335 (13.19) 2 10 10 -8 -6 10 10 -7 -5 10 10 -6 -4 10 10 -5 -3 10 10 -4 -2 10 10 -3 -1 10 10 -2 0 mbar Pa Shop online at www.bocedwards.com ORDERING INFORMATION UNVALVED DIFFSTAK 250/2000C PRODUCT DESCRIPTION C – model pumps have an unvalved ISO collar inlet flange. Pumping speed nitrogen 2130 l s-1 hydrogen 3200 l s-1 Minimum backing pump displacement1 40 m3h-1 Recommended backing pump E2M40 Recommended fluid Santovac® 5 Fluid charge (dry) 500 ml Inlet connection ISO250 Backing connection NW40 Cooling water connection 10 mm compression fittings Minimum cooling-water flow at 20 °C 180 l h-1 Heater power 2.25 kW Weight 46 kg SPARES Heater (one heater of each power is required) 110-125 V 0.85 kW 110-125 V 1.4 kW 210-225 V 0.85 kW 210-225 V 1.4 kW 230-250 V 0.85 kW 230-250 V 1.4 kW For maximum throughput 10 For information on the Cryo-cooled version, contact BOC Edwards. 4 3 Diffstak 250/2000C 10 2 10 10 -8 -6 10 10 -7 10 -5 10 -6 10 -4 10 -5 -3 10 10 -4 10 -2 10 -3 10 -1 10 -2 0 mbar Pa 290 (11.42) Ø290 (11.42) 180 (7.09) 310 (12.2) 522 (20.55) 100 (10.28) (3.94) 357 (14.06) Ø261 381 (15.0) 142 (5.59) l s -1 10 5 × 10-9 7 × 10-6 7 × 10-8 3 × 10-8 0.6 1.2 0.8 0.6 H01700140 H01700161 H01700134 H01700155 H01700137 H01700158 242 (9.53) 290 (11.42) 503 (19.8) Shop online at www.bocedwards.com 3 PAGE 11 SCIENTIFIC VAPOR PUMPS FLUID Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 ORDERING NUMBER For information about spares, refer to standard Diffstak 250/2000 (see page 3-10). For information about installation of Diffstak pumps, see page 3-12. For details of suitable backing/ roughing valves, see page 5-14; for electropneumatic control valves, see page 5-20; for thermal snap-switch accessories, see page 3-15; for hardware components, see page 6-1; and for vapor pump fluids, see page 6-46. CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) 706 (27.8) 1 ORDERING NUMBER Diffstak 250/2000C 110-125 V 1-ph 50/60 Hz B35033976 210-225 V 1-ph 50/60 Hz B35033977 230-250 V 1-ph 50/60 Hz B35033978 Supplied with: NW40 elbow, NW40 centering-ring, NW40 clamp, water pipe couplings and ferrules, inlet ISO 250 trapped "O" ring TECHNICAL DATA DIFFSTAK INSTALLATION • M-model pumps have a manually operated high vacuum valve. P-model pumps have a pneumatically operated high vacuum valve. Both M-model and P-model pumps have inlet flanges which are compatible with ISO flanges: the internal diameter of the inlet flange is narrower and the flange is deeper than a standard ISO flange, to accommodate the high vacuum valve. Diffstak installation • C-model pumps do not have a high vacuum valve and have an ISO flange on the inlet (see pages 3-5 – 3-11). • F-model pumps do not have a high vacuum valve and have a CF flange on the inlet (see pages 3-7 and 3-9). Refer to the diagrams and the tables on these pages to identify the pipeline components and valves required to complete the typical Diffstak installation shown. Items supplied with the pump are shown as a dotted line. Read the footnotes below the diagrams and the tables for more information and for details of the installation requirements for the different models of Diffstaks. 63/150, 100/300, 160/700 installation 3 ** 3 1 PAGE 12 10 *** 9 5P 2 7 4 6 * 5P 5 4P 4P * 8 DIAGRAM KEY 12 2 23 34 45 5 6 7 86 96 10 *** COMPONENT DESCRIPTION ISO tube/collar assembly Rotable flange pack Bolts (size × minimum length, mm) M- and P-model F-model Inlet seal BRV valve, manual BRV valve, pneumatic Clamp "O' ring assembly 4-port light-weight electropneumatic control valve 5-port electropneumatic control valve 5-port electropneumatic control valve 63/150 COMPONENT SIZE QUANTITY 100/300 COMPONENT SIZE QUANTITY 160/700 COMPONENT SIZE QUANTITY ISO63 ISO63 1 1 ISO100 ISO100 1 1 ISO160 ISO160 1 1 M8 × 75 – ISO63 BRV10M BRV10P NW10 NW10 – 4 – 1 1 1 1 1 2 M8 × 75 M8 × 55 ISO100 BRV25M BRV25P NW25 NW25 – 8 16 1 1 1 1 1 2 M10 × 90 M8 × 60 ISO160 BRV25M BRV25P NW25 NW25 – 8 20 1 1 1 1 1 2 – – 1 1 – – 1 1 – – 1 1 1 2 These items are supplied with the pumps, except that the inlet seal for the F-model pumps is not supplied. Not required for F-model pumps; use CF fittings (which must be obtained from another supplier) 3 4 Not required for C-model pumps; use claw clamps to bolt the pump ISO inlet flange directly to the ISO tube/collar assembly. Bolts are not available from BOC Edwards. Bolts are not required for C-model pumps; use claw clamps to bolt the pump ISO inlet flange directly to the ISO tube/collar assembly; use 4 claw clamps for ISO63, ISO100 and ISO160 flanges. 5 These inlet seals are suitable for standard, cryo-cooled and C-model pumps only; use CF fittings (which must be obtained from another supplier) for F-model pumps. 6 Required only for pneumatic operation BRV valves; use either 1 5-port control valve or 2 4-port control valves. If you use 2 4-port control valves, you can use the isolation position of the BRV valve. 7 Required only for P-model pumps, to control the operation of the high vacuum valve. Shop online at www.bocedwards.com 250/2000 installation 3 1 7 11 6 10 ** 3P 5P 2 4 * 5 8 7 6 9 7 6 3 6 PAGE 13 10 ** SCIENTIFIC VAPOR PUMPS 3P * 7 5 DIAGRAM KEY 1 22 33 4 5 6 7 8 9 10 4 11 5 COMPONENT DESCRIPTION ISO tube/collar assembly Rotatable flange pack Bolts (size, minimum length, mm) M- & P-model Inlet seal, trapped "O" ring PV40 valve, manual PV40 valve, pneumatic Clamp "O' ring assembly "T' piece Elbow 3-port electropneumatic control valve 5-port electropneumatic control valve COMPONENT SIZE QUANTITY ISO250 ISO250 M10 × 110 1 1 12 ISO250 PV40MK PV40PK NW40 NW40 NW40 NW40 1 2 2 5 5 1 1 2 – 1 1 These items are supplied with the pump. 2 Not required for C-model pumps; use 6 claw clamps to bolt the pump ISO inlet flange directly to the ISO tube/collar assembly. 3 Bolts are not available from BOC Edwards. Bolts are not required for Model-C pumps; use 6 claw clamps to clamp the pump ISO inlet flange directly to the ISO tube/collar assembly. 4 Required only for pneumatic operation PVPK valves; use 1 3-port control valve for each of the two PVPK valves. 5 Required only for P-model pumps, to control the high vacuum valve. Shop online at www.bocedwards.com 16 (0.63) 76 (2.99) 176 (6.93) 41 (1.61) 54 (2.13) EO50/60 AIR COOLED DIFFUSION PUMP 82 (2.23) 540 (21.26) 91 (3.58) 3 62 (2.44) PAGE 14 80 (3.15) NW50 NW10 EO50/60 The model EO50/60 is a compact, fast warm-up air-cooled diffusion pump supplied complete with high integrity inlet Co-Seal, flange clamping ring and optional baffle. The jet assembly is removable for easy cleaning. It meets the need for a low-cost, high vacuum pump for use in desk top or mobile scientific instruments, leak detectors, and general laboratory applications. In many applications the rapid warm-up capability will enable the EO50/60 to be used without an isolation valve. However, the pump is not intended for use on valveless systems where rapid cycling from atmospheric pressure through the hot pump is required. BOC Edwards offers the TV range of diffusion pumps for these applications. TECHNICAL DATA Pumping speed Air Hydrogen Fluid charge Recommended fluid Minimum backing pump displacement Recommended backing pump Inlet connection Backing connection Heater power Warm-up time Weight Minimum cooling air flow 60 l s-1 (27 l s-1 baffled) 70 l s-1 (50 l s-1 baffled) 20 ml Santovac® 5, Silicone DC704EU 1 m3h-1 E2M1.5 NW50 flange NW10 flange 200 W or 250 W 4 min 2 kg 4.5 m3h-1 CRITICAL BACKING PRESSURE ULTIMATE PRESSURE (mbar) (mbar) FLUID Santovac® 5 Silicone DC702 Silicone DC704EU Silicone DC705 70 PRODUCT DESCRIPTION 1 50 SPARES ACCESSORIES -1 ls 30 20 10 1 -5 10 -3 DC704EU 10 -4 10 -2 2 10 -3 10 -1 H01707060 H01707062 H01707063 H01707075 H01707073 B27158466 C10511393 ORDERING NUMBER For EO2, EO4, EO6 diffusion pumps contact BOC Edwards. 2 10 ORDERING NUMBER Heater (0.2 kW) 110-125 V 210-225 V 230-250 V Heater (0.25 kW) 90 V 180 V Inlet Co-Seal fluoroelastomer Backing NW10 "O" ring assembly, nitrile 40 0 ORDERING NUMBER EO50/60 pump, 50/60 Hz, single phase Pump voltage Fan voltage 90 V (0.25 kW) 115 V B30207090 110-125 V (0.2 kW) 115 V B30207110 180 V (0.25 kW) 230 V B30207180 210-225 V (0.2 kW) 230 V B30207210 230-250 V (0.2 kW) 230 V B30207240 Supplied with: NW50 combined baffle and centering-ring, NW50 centering-ring and "O" ring, NW50 clamp and NW10 Co-Seal and clamp. 10 -2 10 0 B02304000 B27903006 H11401001 H11201040 For valves, see page 5-4. For NW pipeline fittings, see page 6-7. For vapor pump fluids, see page 6-46. EO50/60 60 ORDERING INFORMATION Pump ready thermal snap-switch Cooling fail thermal snap-switch Santovac® 5 (100 ml) Silicone DC704EU (500 ml) 5 × 10-8 5 × 10-6 5 × 10-7 5 × 10-7 0.6 1.2 0.8 0.6 142 (5.59) 10 -1 mbar 10 1 Pa Santovac® 5 Shop online at www.bocedwards.com 615 (24.21) DIFFSTAK COMBINED OUTFITS 540 (21.26) 340 (13.39) ORDERING INFORMATION PRODUCT DESCRIPTION These are compact, high performance units featuring either the 63 mm or 100 mm Diffstak both backed by the RV5 two-stage rotary pump. Inlet pumping speeds above the valve are 135 l s-1 and 280 l s-1 respectively. The Diffstak has an integral water cooled baffle and is fitted with manual quarterswing and backing/roughing valves. A manual air admittance valve and a Pirani gauge are fitted in the backing line to the rotary pump. The unit is supplied complete with rotary pump oil but vapor pump fluid should be selected from the fluids and sealants section. Additional gauges are optional extras. 1 A separate display or controller is required to show the pressure measured by the Pirani gauge head. ACCESSORIES B62426990 B62426952 B62426960 B62613990 B62613952 B62613960 ORDERING NUMBER Line cords for combined outfit – 2m electrical supply cable with IEC socket UK, three pin plug North European plug No plug USA plug A50505000 A50506000 A50508000 A50507000 The Diffstak combination includes the inlet flange Co-Seal, rotary pump oil and instruction manual. The Diffusion pump oil is not included, but can be ordered through BOC Edwards, see page 6-46. The power cable (line cord) is not included and needs to be ordered separately, through BOC Edwards, see above. To meet your special requirements we also offer custom built Diffstak combined outfits or combined outfits featuring turbomolecular pumps, see page 2-27. Please contact us for further details. TECHNICAL DATA Minimum cooling water Maximum power Weight (approx.) Inlet connection Outlet connection Vapor pump Rotary vacuum pump Backing/roughing valve Vacuum gauge – pirani 135 l s 3 x 10-8 mbar 3 x 10-6 Pa 42 l h-1 0.8 kW 51 kg Diffstak 63 / 150M RV5 BRV10K APG-M-NW16 280 l s-1 3 x 10-8 mbar 3 x 10-6 Pa 60 l h-1 1.0 kW 61 kg ISO 100 NW25 Diffstak 100 / 300M RV5 BRV25K APG-M-NW25 VAPOR PUMP – THERMAL SNAP-SWITCHES Vapor pump accessories COOLING-FAIL THERMAL SNAP-SWITCH This switch opens at a preset temperature to indicate failure of the cooling water flow. The switch resets (closes) when the pump cools down to a preset temperature. 35 (1.38) 14 (0.55) Minimum cooling water flow Maximum power Weight (approx.) Vapor pump Rotary vacuum pump Backing/roughing valve Vacuum gauge – pirani 100 mm Diffstak outfit Pumping speed above Diffstak valve Ultimate vacuum (with Santovac® 5 fluid) -1 65 (2.56) 63 mm Diffstak outfit Pumping speed above Diffstak valve Ultimate vacuum (with Santovac® 5 fluid) Use with these pumps Electrical data Preset operation temperatures Open Close (automatic reset) Diffstak, EO2, EO4, EO6, EO9 18B4A and 30B5A 25 A at 120 V a.c. or 240 V a.c. 46 ± 5 ºC 38 ± 5 ºC ORDERING INFORMATION PRODUCT DESCRIPTION Cooling-fail thermal snap-switch Shop online at www.bocedwards.com ORDERING NUMBER B02302000 3 PAGE 15 SCIENTIFIC VAPOR PUMPS • Compact unit, delivering ~3 x 10-8 mbar ultimate pressure (depending on vapor pump fluid used) • Integrated manual backing/roughing valve and water cooled baffle • Active Pirani gauge head* in backing line automatically interlocks the Diffstak • Enhanced safety shields for the highest temperature surfaces • Castors are fitted as standard • Fully factory tested Diffstak combined outfits ORDERING NUMBER 63 mm Diffstak Combined Outfit (requires electrical supply cable) 115 V 1-ph 50/60 Hz 220 V 1-ph 50/60 Hz 245 V 1-ph 50/60 Hz 100 mm Diffstak Combined Outfit (requires electrical supply cable) 115 V 1-ph 50/60 Hz 220 V 1-ph 50/60 Hz 245 V 1-ph 50/60 Hz COOLING-FAIL THERMAL SNAP-SWITCH (EO50/60 AND SI100) This switch opens at a preset temperature to indicate failure of the cooling water flow. The switch resets (closes) when the pump cools down to a preset temperature. 0.51 (0.02) This switch opens at a preset temperature to indicate that the pump is at operating temperature. It can be used to control the opening of a high vacuum valve. The switch resets (closes) when the pump cools down to a preset temperature. Ø16.00 18.54 (0.73) (0.63) 30.15 (1.19) 23.8 EO50/60, SI100, EO100/90 15 A at 120 V a.c. resistive or 10 A at 240 V a.c. resistive Preset operation temperatures Open Close (automatic reset) 50 ± 3 ºC 35 ± 3 ºC Use with these pumps 90 PRODUCT DESCRIPTION ORDERING NUMBER Cooling-fail thermal snap-switch 15.50 (0.61) All Diffstak, EO50/60, SI100, EO100/ EO4, EO6, EO9 6 A at 120 V a.c. resistive or 3 A at 240 V a.c. resistive or 7 A ar 30 V a.c. or dc, resistive Electrical data Preset operation temperatures Open Close (automatic reset) ORDERING INFORMATION B27903006 80 ± 2.8 ºC 60 ± 2.8 ºC ORDERING INFORMATION PRODUCT DESCRIPTION COOLING-FAIL THERMAL SNAP-SWITCH (TVA50/60 AND TVW50/60) This switch opens at a preset temperature to indicate failure of the cooling water flow. The switch resets (closes) when the pump cools down to a preset temperature. 0.51 18.54 (0.02) (0.73) Ø3.68 (0.14) B02304000 BOILER PROTECTION THERMAL SNAP-SWITCH This switch opens at a preset temperature when the pump boiler base exceeds the maximum safe operating temperature. The switch resets (closes) when the pump cools down to a preset temperature. Ø18.03 0.51 (0.02) Use with these pumps Electrical data Preset operation temperatures Open Close (automatic reset) TVA50/60, TVW50/60 15 A at 120 V a.c. resistive or 10 A at 240 V a.c. resistive 60 ± 3 ºC 50 ± 3 ºC Cooling-fail thermal snap-switch Use with these pumps Electrical data Pre-set operation temperatures Open Close (automatic reset) ORDERING INFORMATION PRODUCT DESCRIPTION 15.49 (0.61) Ø3.62 (0.14) 30.15 (1.19) 23.8 (0.94) (0.71) ORDERING NUMBER B02304002 23.8 (0.63) ORDERING NUMBER Pump-ready thermal snap-switch (0.94) Ø15.88 30.15 (1.19) PAGE 16 Use with these pumps Electrical data (0.94) 30.15 (1.19) Ø3.68 (0.14) 3 0.51 (0.02) Ø3.62 (0.14) 23.8 (0.94) Ø15.88 (0.63) PUMP-READY THERMAL SNAP-SWITCH EO50/60, EO100/90, SI100 15 A at 220 V a.c. 50/60 Hz 10 A at 240 V a.c. 50/60 Hz 200 ± 4.4 ºC 184 ± 4.4 ºC ORDERING INFORMATION PRODUCT DESCRIPTION Boiler protection thermal snap-switch Shop online at www.bocedwards.com ORDERING NUMBER B02304001
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