Emerson 168 168H And 68 Series Three Way Switching Valves Installation Guide 168,168H,68_IG.p65
2015-03-30
: Emerson Emerson-168-168H-And-68-Series-Three-Way-Switching-Valves-Installation-Guide-680881 emerson-168-168h-and-68-series-three-way-switching-valves-installation-guide-680881 emerson pdf
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Installation Guide English – May 2002 168 Series Introduction This installation guide provides instructions for installation, startup, and adjustment. To receive a copy of the instruction manual, contact your local Fisher Sales Office or Sales Representative or view a copy at www.FISHERregulators.com. For further information refer to: 168 Series Instruction Manual, form 2256, D100275X012. P.E.D. Categories This product may be used as a safety accessory with pressure equipment in the following Pressure Equipment Directive 97/23/EC categories. It may also be used outside of the Pressure Equipment Directive using sound engineering practice (SEP) per table below. PRODUCT SIZE CATEGORIES FLUID TYPE DN 6 (1/4-inch) SEP 1 Specifications Maximum Allowable Pressures Diaphragm: 168 Series: 6.9 bar (100 psi) 168H Series: 10.3 bar (150 psi) Body: 168-1, 168-2,168H-1, and 168H-2: 10.3 bar (150 psi) 168-3, 168-4, 168H-3, and 168H-4: 2.8 bar (40 psi) Diaphragm Pressure Ranges 168-1 and 168-3: 0.1 to 4.1 bar (2 to 60 psi) 168-2 and 168-4: 0.1 to 2.8 bar (2 to 40 psi) 168H-1 and 168H-3: 3.5 to 10.3 bar (50 to 150 psi) 168H-2 and 168H-4: 2.4 to 6.9 bar (35 to 100 psi) Diaphragm Pressure Change Between Switching Points Minimum 168-1, 168-2, and 168-3: 0.7 bar (10 psi) 168-4: 0.5 bar (7 psi) 168H-1, 168H-2, and 168H-3: 1.4 bar (20 psi) 168H-4: 1.1 bar (16 psi) Maximum 168-1,168-3: 4.0 bar (58 psi) 168-2, 168-4: 2.6 bar (38 psi) 168H-1, 168H-3: 6.9 bar (100 psi) 168H-2, 168H-4: 4.5 bar (65 psi) Proof Test Pressure All Pressure Retaining Components have been proof tested per Directive 97/23/EC - Annex 1, Section 7.4 tional and applicable codes and regulations, and Fisher instructions. If the regulator vents fluid or a leak develops in the system, it indicates that service is required. Failure to take the regulator out of service immediately may create a hazardous condition. Personal injury, equipment damage, or leakage due to escaping fluid or bursting of pressure-containing parts may result if this regulator is overpressured or is installed where service conditions could exceed the limits given in the Specifications section, or where conditions exceed any ratings of the adjacent piping or piping connections. To avoid such injury or damage, provide pressurerelieving or pressure-limiting devices (as required by the appropriate code, regulation, or standard) to prevent service conditions from exceeding limits. Additionally, physical damage to the regulator could result in personal injury and property damage due to escaping fluid. To avoid such injury and damage, install the regulator in a safe location. Clean out all pipelines before installation of the regulator and check to be sure the regulator has not been damaged or has collected foreign material during shipping. For NPT bodies, apply pipe compound to the male pipe threads. For flanged bodies, use suitable line gaskets and approved piping and bolting practices. Install the regulator in any position desired, unless otherwise specified, but be sure flow through the body is in the direction indicated by the arrow on the body. Note It is important that the regulator be installed so that the vent hole in the spring case is unobstructed at all times. For outdoor installations, the regulator should be located away from vehicular traffic and positioned so that water, ice, and other foreign materials cannot enter the spring case through the vent. Avoid placing the regulator beneath eaves or downspouts, and be sure it is above the probable snow level. Overpressure Protection The recommended pressure limitations are stamped on the regulator nameplate. Some type of overpressure protection is needed if the actual inlet pressure exceeds the maximum operating outlet pressure rating. Overpressure protection should also be provided if the regulator inlet pressure is greater than the safe working pressure of the downstream equipment. Regulator operation below the maximum pressure limitations does not preclude the possibility of damage from external sources or debris in the line. The regulator should be inspected for damage after any overpressure condition. Operative Temperature Limits -23.3 to 66°C (-10 to 150°F) Installation Only qualified personnel should install or service a regulator. Regulators should be installed, operated, and maintained in accordance with interna- The regulator is factory set at approximately the midpoint of the spring range or the pressure requested, so an initial adjustment may be required to give the desired results. With proper installation completed and relief valves properly adjusted, slowly open the upstream and downstream shutoff valves. 1. The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded. www.FISHERregulators.com D100275XENG Startup 168 Series Adjustment To change the outlet pressure, remove the closing cap or loosen the locknut and turn the adjusting screw clockwise to increase outlet pressure or counterclockwise to decrease pressure. Monitor the outlet pressure with a test gauge during the adjustment. Replace the closing cap or tighten the locknut to maintain the desired setting. Taking Out of Service (Shutdown) To avoid personal injury resulting from sudden release of pressure, isolate the regulator from all pressure before attempting disassembly. Parts List 168 and 168H Series Key Description Key Description 1 2 2A 2B 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Diaphragm Case Spring Case Assembly Spring Case Spring Case Bushing Diaphragm Piston Diaphragm Machine Screw Stem Range Adjusting Nut Spring Hex Nut Stem Protector Machine Screw Machine Screw Hex Nut Nameplate Mounting Bracket Cap Screw Vent Screen Body Assembly Spacer Reset Lever Knob Pin Machine Screw Indicator Tag DU8794 Figure 1. 68 Series Switching Valve Body Assemblies DETAIL OF MANUAL RESET SWITCH FOR USE WITH EITHER 168 OR 168H SERIES 68 Series Key Description 1 2 2A 2B 2C 2D 2E 2F 3 4 5 6 7 8 9 10 Body Spring Case Assembly Spring Case O-Ring Trip Lever Spring Trip Lever Pin Spacer Rocker Assembly Seat Ring Roller Assembly O-Ring Rocker Pin Machine Screw Machine Screw Nameplate DU8774-D 168 SERIES 168H SERIES Figure 2. Switching Valve Constructions ©Fisher Controls International, Inc., 2002; All Rights Reserved Fisher and Fisher Regulators are marks owned by Fisher Controls International, Inc. The Emerson logo is a trade mark and service mark of Emerson Electric Co. All other marks are the property of their respective owners. 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. For information, contact Fisher Controls, International: Within USA (800) 588-5853 – Outside USA (972) 542-0132 France – (33) 23-733-4700 Singapore – (65) 770-8320 Mexico – (52) 57-28-0888 Printed in U.S.A. www.FISHERregulators.com
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No Page Count : 2 Creation Date : 2002:11:19 17:55:04Z Mod Date : 2002:11:19 17:55:04Z Producer : Acrobat Distiller 5.0.5 (Windows) Author : Kelly Create Date : 2002:11:19 17:55:04Z Modify Date : 2002:11:19 17:55:04Z Metadata Date : 2002:11:19 17:55:04Z Creator : Kelly Title : 168,168H,68_IG.p65EXIF Metadata provided by EXIF.tools