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- Page 1 CRANE Pacific Pressure Seal ChemPharma & Energy GP-02-IOMPS, Rev 5 Pacific Valves Operation and Maintenance Manual Pressure Seal Pacific Valves, 3201 Walnut Ave., Signal Hill, CA. 90755 PH. (562) 426-2531 Fax. (562) 595-9717 cranecpe.com P a g e...
- Page 2 cranecpe.com Revisions DESCRIPTION PREPARED BY DATE ENGINEERING OTHER 18353 INITIAL RELEASE Jerry Martin 10-16-2012 S. Sturtevant 19684 CHANGED ALL REASSEMBLY SECTIONS 19884 Jerry Martin 11-8-2012 S. Sturtevant STATEMENT ABOUT DRAW STUD TORQUE TO WRENCH TIGHT ADDED SWING CHECK VALVE 27317 Hiral Joshi 9-22-2014 S.
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Page 3: Table Of Contents
Table of Contents Section Page SECTION A: Warnings • SECTION B: Pressure Seal Gate Valve • SECTION C: Pressure Seal Parallel Disc Gate Valves • SECTION C1: Pressure Seal Belt Eye Gate Valve • SECTION D: Pressure Seal Globe Valves •... -
Page 4: Section A: Warnings
Section A: Warnings All Pacific Valves are designed and manufactured to be installed in applications where no more than • 1g of force in excess of gravity is applied to the valve in any direction. This 1g force can be an effect of Traffic, Wind or Earthquake. - Page 5 Standard graphitic packing is suitable for 500ppm VOC emissions. Consult the factory if lower • emissions are required. Crane Pacific meets API-622 / Method 21 emissions standards. When operating manual valves, gloves should be worn to minimize the risk of injury to the hands.
- Page 6 Table 1 CORROSION-EROSION ALLOWANCE FOR ALL MINIMUM WALL THICKNESS FOR ALL PRODUCTS BY PRESSURE CLASS PRESSURE CLASSES BY PRODUCT Pressure Compact Size Class 150 Class 300 Class 600 Class 800 Class 900 Class 1500 Class 2500 Size Bolted Bonnet...
- Page 7 Swing Check & Tilt Disc Valves: Check valves are designed to open by the system pressure in a line. The desired direction of flow in the line will open the valve, and any attempt by the flow to reverse will close the valve completely. The check valve typically does not require any outside force or signal to operate properly.
- Page 8 For soft-seated valves, the temperature of the valve body should not exceed 200°F during welding to avoid damaging the soft seals. Check the temperature of surrounding areas to avoid heating valve body excessively, especially with small sizes, where a heat sink may be necessary. Use the smallest electrodes and the minimum amperage possible consistent with approved welding procedures.
- Page 9 Item to inspect GATE GLOBE CHECK Y-GLOBE STOP CHECK PARALLEL DISC GATE Check Stem threads for wear Check for Packing leaks Check body/bonnet joint for leaks, retighten all bolting If conditions permit, operate valve. Inspect all external connections Ensure Stem and seal areas are free from debris Check all...
- Page 10 lubricating the sealing area of the stem. This practice tends to attract debris and foreign material, which can lead to stem or stuffing box damage. 6.2.3 The yoke sleeve should be lubricated periodically through the grease fitting to ensure smooth operation.
- Page 11 The following is the newer figure number system for the pressure seals. 11 | P a g e...
- Page 12 8. Boundary Conditions The following charts denote the defined boundary conditions for all Pacific Valve products. Boundary conditions for Pressure Seal products Scope of product: 2 ½” through 36” Class 600 through 3500 Service fluid: • Water, steam, gas, or hydrocarbon compounds. •...
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Page 13: Section B: Pressure Seal Gate Valve
Section B: Pressure Seal Gate Valves 13 | P a g e... - Page 14 This includes scratches caused by misalignment and/or by debris in the seal area. 2.3.2 Crane requires that the pressure seal bonnet gasket 55 be replaced when servicing any valve. 2.3.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 15 PRESSURE PRESSURE- - - - SEAL GATE V SEAL GATE VALVES ALVES PRESSURE PRESSURE SEAL GATE V SEAL GATE V ALVES ALVES CLASS 600, 900, 1500, & 2500 DISASSEMBLY Read the warning notice listed in section 2.0 of • these instructions. Loosen gland stud nuts 16A.
- Page 16 (or stock number) of the valve and the body material. Crane also offers complete re-manufacturing services to rework your valve. If you find this necessary, the Crane Valve Service Center will re-manufacture your valve to factory specifications.
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Page 17: Section C: Pressure Seal Parallel Disc Gate Valves
Section C: Pressure Seal Parallel Disc Gate Valves 17 | P a g e... - Page 18 This includes scratches caused by misalignment and/or by debris in the seal area. 2.3.2 Crane requires that the pressure seal bonnet gasket 55 be replaced when servicing any valve. 2.3.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 19 PRESSURE PRESSURE- - - - SEAL PARALLEL DISC GATE VALVES PRESSURE PRESSURE SEAL PARALLEL DISC GATE VALVES SEAL PARALLEL DISC GATE VALVES SEAL PARALLEL DISC GATE VALVES CLASS 600, 900, 1500, & 2500 ALL SIZES DISASSEMBLY Read the warning notice listed in section 2.0 of these •...
- Page 20 (or stock number) of the valve and the body material. Crane also offers complete remanufacturing services to rework your valve. If you find this necessary the Crane Valve Service Center will re-manufacture your valve to factory specifications.
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Page 21: Section C1: Pressure Seal Belt Eye Gate Valve
Section C1: Pressure Seal Parallel Disc Belt Eye Gate Valves 21 | P a g e... - Page 22 This includes scratches caused by misalignment and/or by debris in the seal area. 2.2.2 Crane requires that the pressure seal bonnet gasket 55 be replaced when servicing any valve. 2.2.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 23 PRESSURE PRESSURE- - - - SEAL PARALLEL DISC GATE VALVES PRESSURE PRESSURE SEAL PARALLEL DISC GATE VALVES SEAL PARALLEL DISC GATE VALVES SEAL PARALLEL DISC GATE VALVES CLASS 2500 DISASSEMBLY Read the warning notice listed in section 2.0 of these •...
- Page 24 (or stock number) of the valve and the body material. Crane also offers complete remanufacturing services to rework your valve. If you find this necessary the Crane Valve Service Center will re-manufacture your valve to factory specifications.
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Page 25: Section D: Pressure Seal Globe Valves
Section D: Pressure Seal Globe Valves 25 | P a g e... - Page 26 This includes scratches caused by misalignment and/or by debris in the seal area. 2.3.2 Crane recommends replacing the pressure seal bonnet gasket 55 when servicing any valve. 2.3.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 27 PRESSURE- - - - SEAL GLOBE VALVES PRESSURE SEAL GLOBE VALVES PRESSURE PRESSURE SEAL GLOBE VALVES SEAL GLOBE VALVES CLASS 600, 900, 1500, & 2500, ALL SIZES DISASSEMBLY • Read the warning notice in section 2.0 of these instructions. • Remove operator 200 (if used) and upper plate 120.
- Page 28 (or stock number) of the valve, the body material, as well as the quantity desired. Crane also offers complete remanufacturing services to rework your valve. If you find this necessary, the Crane Valve Service Center will re-manufacture your valve to factory specifications.
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Page 29: Section E: Pressure Seal Y-Globe Valves
Section E: Pressure Seal Y-Globe Valves 29 | P a g e... - Page 30 This will orient the bonnet vertically and discourage misalignment. 2.3.2 Crane requires replacing the pressure seal bonnet gasket 55 when servicing any valve. 2.3.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 31 PRESSURE PRESSURE- - - - SEAL Y PRESSURE PRESSURE SEAL Y SEAL Y SEAL Y- - - - GLOBE VALVES GLOBE VALVES GLOBE VALVES GLOBE VALVES CLASS 600, 900, 1500, & 2500 DISASSEMBLY Read the warning notice in section 2.0 of these •...
- Page 32 (or stock number) of the valve, the body material, as well as the quantity desired. Crane also offers complete remanufacturing services to rework your valve. If you find this necessary, the Crane Valve Service Center will re-manufacture your valve to factory specifications.
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Page 33: Section F: Pressure Seal Check Valves
Section F: Pressure Seal Check Valves Pressure Seal Tilt Disc Check Valves Pressure Seal Swing Check Valves 33 | P a g e... - Page 34 This will orient the bonnet vertically and discourage misalignment. 2.1.2 Crane requires the replacement of the pressure seal bonnet gasket 55 when servicing any valve. 2.1.3 Caution should be exercised in handling the new bonnet gasket 55 to avoid scratching its surfaces.
- Page 35 PRESSURE PRESSURE PRESSURE PRESSURE- - - - SEAL SEAL SEAL TILT DISC SEAL TILT DISC TILT DISC TILT DISC CHECK VALVES CHECK VALVES CHECK VALVES CHECK VALVES CLASS 600, 900, 1500, & 2500, ALL SIZES DISASSEMBLY: Read the warning notice in section 2.0 of these •...
- Page 36 PRESSURE PRESSURE- - - - SEAL SWING CHECK VALVES SEAL SWING CHECK VALVES PRESSURE PRESSURE SEAL SWING CHECK VALVES SEAL SWING CHECK VALVES CLASS 600, 900, 1500, & 2500, ALL SIZES DISASSEMBLY: Read the warning notice in section 2.0 of these •...
- Page 37 (or stock number) of the valve, the body material, as well as the quantity desired. Crane also offers complete remanufacturing services to rework your valve. If you find this necessary, the Crane Valve Service Center will remanufacture your valve to factory specifications.
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Page 38: Appendix 1 : Bolt Torques
Appendix 1 Bolting Torque Values BOLTING TORQUE VALUES 38 | P a g e... - Page 39 General Information For general valve operation & maintenance information please refer to section “A” of this manual. This section details the specific torque values recommended by Pacific Valves for bolting used in all Pacific products. Standard Procedures Always use new bolting materials. Verify that the materials are compatible with the process system as well as any temperature or pressure requirements.
- Page 40 Fabricated Yoke Torque Values FABRICATED YOKE POST BOLT TORQUES, FT/LBS PRESSURE SEAL GATE VALVES VALVE SIZE 900# 1500# 2500# 2.5” 3” 4” 6” 8” 10” 12” 14” 16” 2,889 18” 1,282 1,356 20” 1,200 24” 1,155 1,271 PRESSURE SEAL “T” GLOBE VALVES VALVE SIZE 900# 1500#...
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Page 41: Appendix 2 : Long Term Storage
Appendix 2 Long Term Storage of Valves 41 | P a g e... - Page 42 LONG TERM STORAGE OF VALVES General Information For general operation & maintenance information regarding for valves, please refer to section “A” of this manual. Storage The following recommendations are for preparing valves and their accessories for Long Term Storage. They are necessary to maintain the valves in proper condition prior to installation into the pipeline.
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Page 43: Appendix 3 Valve Installation
Appendix 3 Valve Installation 43 | P a g e... - Page 44 VALVE INSTALLATION General Information For general valve information, please refer to section “A” of this manual. Introduction By exercising proper care in the installation of Pacific valves, the probability of trouble-free service will be enhanced. It is important to recognize that in the transport, handling and storage of a valve between the time of manufacture and the time of installation, there are numerous possibilities for accident or error, which may affect valve performance.
- Page 45 Weld End Valves Welded joints when properly made provide a structural and metallurgical continuity between the pipe and the valve body. For socket weld joints it is usually required that the weld fillet have more cross sectional area that the pipe. Butt welds usually require full penetration and thickness at least equal to that of the pipe.
- Page 46 CAUTION! As indicated above, torque wrenches should be used for flange bolting. If, in the tightening process, the torque on a given bolt has been increasing with each part turn, and then is observed to remain unchanged or increase a much lesser amount with an additional part turn, that bolt is yielding.
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Page 47: Appendix 4 Packing, Gasket &Valve Lubrication
Appendix 4 Packing, Gasket &Valve Lubrication 47 | P a g e... - Page 48 PACKING & GASKET MAINTENANCE AND VALVE LUBRICATION General Information For general valve operation & maintenance information please refer to section “A” of this manual. Packing Maintenance Inspection of the valve stem/bonnet seal should be an essential part of routine monthly valve maintenance inspections.
- Page 49 3.4.1 To open split ring joints, twist the open ends in opposite directions (the packing ring should resemble an “S”. Install each new packing ring separately, tamping each one before installing the next. Ensure that rings are not cocked and that air is not entrapped between adjacent rings.
- Page 50 circumference. Gasket thickness Indicative of "flange bridging" between bolts or warped flanges. Provide varies periodically reinforcing rings for flanges to better distribute bolt load. Select gasket material with lower seating stress. Provide additional bolts if possible to obtain better load distribution. If flanges are warped, re-machine or use softer gasket material.
- Page 51 one stud is torqued it will relieve the stress on the adjacent stud until such time as equilibrium is achieved. 5.10 On high-pressure, high-temperature applications, it is recommended that the flanges be re- torqued to the required stress after 24 hours at operating pressures and temperatures to compensate for any relaxation or creep that may have occurred.
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Page 52: Appendix 5 : Wedge Fitting In Gate Valves
Appendix 5 Fitting of Wedge Gate Valves 52 | P a g e... - Page 53 FITTING OF WEDGE GATE VALVES GENERAL INFORMATION For general information regarding this or any other valve please refer to section “A” of this manual. INTRODUCTION Fitting of gate valve wedges has a direct effect on the overall performance and longevity of the valve.
- Page 54 When the wedge is finally fitted to the body and is resting between the seats (not hammered into place), there should be a small clearance at the toe (bottom), depending on the size and pressure class of the valve (body flexibility). Valve Size Suggested Toe Clearance 300 and 400 600 and up...
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Page 55: Appendix 6 Fabricated Yoke Assemblies
Appendix 6 Fabricated Yoke Assemblies 55 | P a g e... - Page 56 FABRICATED YOKE ASSEMBLY General Information For general valve operations & maintenance information please refers to section “A” of this manual. This section covers the design, disassembly and use of the Pacific Fabricated Yoke assembly. This yoke configuration is typically used on pressure seal valves, but may also be applied to bolted bonnet valves.
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Page 57: Appendix 7 : Gear & Motor Actuators
Appendix 7 Gear & Motor Actuated Valves 57 | P a g e... - Page 58 GEAR AND MOTOR OPERATORS THEORY OF OPERATION Most valves, which are located in an accessible environment, are operated by a manual Hand-wheel mounted directly on top of the valve. When the valve size or differential pressure is very high that the handwheel size cannot keep the operating handwheel pull within customer reasonable limits, then a bevel gear should be mounted on the top-works.
- Page 59 FLOW PRESSURE SEAL GLOBE EXAMPLE DISASSEMBLY Remove operator mounting bolts 97 from mounting plate 119 or mounting adapter 120. Attach a support sling around operator 210 and prevent rotation. Turn handwheel closed to turn operator off from stem and then lift gear operator off. In the case of an Electric Motor operator it may be necessary to disengage or “de-clutch”...
- Page 60 ASSEMBLY Install spacer 64, if used, and coupling 45. Lift gear operator carefully over valve stem and while preventing operator from rotating, turn handwheel open until operator aligns over mounting holes. Loosely install mounting bolts 97 on mounting plate 119 or mounting adapter 120 and then check that stem 70 operation does not bind.
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