Emerson Type 112 Restrictor Instruction Manual
2015-03-30
: Emerson Emerson-Type-112-Restrictor-Instruction-Manual-681357 emerson-type-112-restrictor-instruction-manual-681357 emerson pdf
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Type 112 Instruction Manual Form 5864 September 2008 Type 112 Restrictor Introduction Startup and Adjustment Scope of Manual Startup for Both Single-Regulator and Monitoring Installations This instruction manual provides technical specifications, installation, startup, adjustment, and parts ordering information for the Type 112 restrictor. Product Description The 112 Restrictors are mainly used in natural gas, air, or other non-corrosive gas applications. Their installation is foreseen together with a Type 161 pilot for Pressure Regulators Type EZR. 1. Make sure all block and vent valves are closed. 2. Back out the pilot adjusting screw(s). 3. For easy initial startup, set the restrictor to the “8” position. For future startups, the restrictor can be left in the desired run position. 4. SLOWLY OPEN the valves in the following order: a. Pilot supply and control line valve(s), if used b. Inlet block valve Specifications c. Outlet block valve The Specification section lists pressure limitations and other specifications for Type 112 Restrictor. 5. For a 161 Series pilot with Type 112 restrictor, turn the restrictor(s) to position “2” or to desired run position. Set then the pilot to the desired outlet (control) pressure according to the pilot adjustment procedure. Refer to Tables 2 and 3 for recommended settings. Principle of Operation Maintenance Type 112 Restrictor Perform this procedure only if O-rings are leaking. Key numbers are referenced in Figure 2. 1. Unscrew the groove valve (key 22) and retainer (key 23) just enough to loosen them, but do not completely separate. 2. Push on the retainer (key 23) to push the groove valve (key 22) out of the body (key 21), then complete disassembly. 3. Replace the groove valve O-rings (key 24) if necessary, being sure to lightly apply lubricant to the replacement O-rings before installing them in the groove valve (key 22) and retainer (key 23). D103237X012 The Type 112 restrictor controls the regulator’s proportional band (droop) and speed of response. The restrictor can be used to fine tune the regulator for maximum performance by decreasing the restrictor setting for tighter control (increased opening speed, decreased closing speed); or increasing the restrictor setting for maximum stability (decreased opening speed, increased closing speed). A lower setting also provides a narrower proportional band for better accuracy. The “8” position has the largest flow, is most stable, and easiest for startup, however, using the “8” position is not necessary. The “0” setting has the smallest (minimum) flow passage; at no point of rotation will the Type 112 restrictor be completely shutoff. After initial adjustment, the restrictor does not need to be adjusted for maintenance or startup. www.emersonprocess.com/regulators Type 112 Specifications Maximum Inlet Pressure and Pressure Drops(1) Restrictor: 1500 psig (103 bar) Construction Materials Body: CB7Cu-2 Stainless steel Groove Valve: 416 Stainless steel Retainer: 416 Stainless steel Pipe Plug: 316 Stainless steel O-rings: Fluorocarbon (FKM) Flow Coefficients Restrictor: See Table 1 1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded. Table 1. Restrictor Flow Coefficients set on start set on run Cg CV Cg CV 6 0.17 1 0.03 C1 35 Table 2. Adjustment Recommendations with 161 and 161EB Series Pilot series 161 / 161H Pilots 161EB Pilots recommended type 112 restrictor settings for low flow operation TYPE 112 RESTRICTOR SETTINGS TO AVOID LOW FLOW OPERATION Restrictor Setting of “5” or Greater Restrictor Setting of “2” or less if continuous flows are expected to be less than 5% of maximum capacity Note: Higher Type 112 restrictor setting will increase proportional band. Adjustment of the Type 112 restrictor will also cause a shift in setpoint. Setpoint should be checked and adjusted following restrictor setting adjustment. Table 3. Adjustment Recommendations with 161AY / 161AYM Series Pilot series recommended type 112 restrictor settings for low flow operation RECOMMENDED ORIFICE SIZE(S) FOR LOW FLOW OPERATION TYPE 112 RESTRICTOR SETTINGS AND ORIFICE SIZES TO AVOID LOW FLOW OPERATION 161AY Pilots Restrictor Setting of “5” or greater 3/32 or 1/8-inch (2,38 or 3,18 mm) (3/32-inch (2,38 mm) is standard) Restrictor Setting of “2” or less if continuous flows are expected to be less than 5% of maximum capacity Note: Higher Type 112 restrictor setting will increase proportional band. Adjustment of the Type 112 restrictor will also cause a shift in setpoint. Setpoint should be checked and adjusted following restrictor setting adjustment. 2 Type 112 v-groove Stamped indicator mark and “B” to be oriented with hex and v-groove as shown 20B4403 Hi cap groove valve loading connection 1/4-inch npt pipe to type EZR diaphragm loading port outlet connection 1/4-inch npt pipe to pilot inlet connection pilot supply connection 1/4-inch npt pipe to upstream pilot supply tap 11B5004 optional loading connection 1/4-inch npt normally plugged Figure 1. Type 112 Restrictor Port Function and Connection Sizes 4. Install the groove valve (key 22) into the same side of the body where the scale appears. Install the retainer (key 23) into the opposite side of the body, and tighten until both are secure. 5. When all maintenance is complete, refer to the Startup and Adjustment section to put the regulator back into operation. Parts Ordering When corresponding with your local Sales Office about this equipment, always reference the equipment serial number or FS number found on a nameplate attached to the bonnet. When ordering replacement parts, reference the complete 11-character part number of each needed part as found in the following parts list. 3 Type 112 22 14 21 24 23 20B4393-D apply lubricant Figure 2. Type 112 Restrictor Assembly Parts List Type 112 Restrictor (Figure 2) Key Description Part Number Key Description 14 Pipe Plug, 316 Stainless steel 1A767535072 23 21 Body, CB7Cu-2 Stainless steel 20B4429X012 22 Groove Valve, 416 Stainless steel 20B4403X012 24* Groove Valve O-ring (2 required), Fluorocarbon (FKM) Part Number Retainer, 416 Stainless steel 10B4402X012 1C8538X0052 * Recommended spare part Industrial Regulators Regulator Division Emerson Process Management Natural Gas Technologies Regulator Division Emerson Process Management TESCOM Regulator Division Emerson Process Management USA - Headquarters McKinney, Texas 75070 USA Tel: 1-800-558-5853 Outside U.S. 1-972-548-3574 USA - Headquarters McKinney, Texas 75070 Tel: 1-800-558-5853 Outside U.S. 1-972-548-3574 USA - Headquarters Elk River, Minnesota 55330 USA Tel: 1-763-241-3238 Asia-Pacific Shanghai, China 201206 Tel: +86 21 2892 9000 Asia-Pacific Singapore, Singapore 128461 Tel: +65 6777 8211 Europe Bologna, Italy 40013 Tel: +39 051 4190611 Europe Bologna, Italy 40013 Tel: +39 051 4190611 Gallardon, France 28320 Tel: +33 (0)2 37 33 47 00 Europe Selmsdorf, Germany 23923 Tel: +49 (0) 38823 31 0 For further information visit www.emersonprocess.com/regulators The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their prospective owners. Fisher is a mark owned by Fisher Controls, Inc., a business of Emerson Process Management. The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice. Emerson Process Management does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson Process Management product remains solely with the purchaser. ©Fisher Controls International, Inc., 2008; All Rights Reserved
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