Flow Safe F88 Series Installation, Operation & Maintenance Manual
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Flow Safe F88 Series Installation, Operation & Maintenance Manual

Safety relief valve
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•
PLASTIC SEATED
•
- 3, - 4, - 8, - G, - J Orifices
(
WITH BOLTED BONNET
OPERATION, & MAINTENANCE MANUAL
Approved by:
F88 SERIES
SAFETY RELIEF VALVE
INSTALLATION,
Revision:
Date of Issue:
GG
Project Engineer
)
Feb. 2, 2016
Engineering Projects Dir.
D
jwo

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Summary of Contents for Flow Safe F88 Series

  • Page 1 F88 SERIES SAFETY RELIEF VALVE • PLASTIC SEATED • - 3, - 4, - 8, - G, - J Orifices WITH BOLTED BONNET INSTALLATION, OPERATION, & MAINTENANCE MANUAL Revision: Date of Issue: Feb. 2, 2016 Approved by: Project Engineer Engineering Projects Dir.

  • Page 2: Table Of Contents

    Test Equipment ................. 8 Setting / Adjustment Tolerances ............8 Set Pressure Adjustment ..............9 Seat Tightness .................. 9 Lift Lever Operation ................9 Accessories..................10 Troubleshooting Guide ..............11 Illustrations F88 Series Valve Assembly Illustrations............13...

  • Page 3: General

    This manual is intended to provide users with direction and guidance for the maintenance of FLOW SAFE F88 Series safety relief valves. This manual indicates the proper method of valve disassembly, soft goods replacement, and valve reassembly. FLOW SAFE provides this manual as a guideline and reference only.

  • Page 4: Description, Operation, Service Envelope, Installation, & Startup

    INSTALLATION, and STARTUP DESCRIPTION / OPERATION The FLOW SAFE F88 Series safety relief valve is a direct-acting spring-loaded relief valve, suitable for gas or liquid service. The Type F88 is plastic-seated with a plastic seal. Orifice sizes are available in -3, -4, -8, -G, and -J with set pressures as referenced in 2.2.

  • Page 5: Service Envelope

    Prior to installation, check that the set pressure on the nameplate is as required, and meets the system requirements. The F88 Series safety relief valve should be installed in the upright position per the figure on the next page, as close as possible to the pressure source, to minimize pressure losses between the system and the valve.

  • Page 6: Startup

    F88 Series Safety Relief Valve Rev. D Page 6 of 15 F88 Series valves are balanced against superimposed backpressure, so that the set pressure will not change with backpressure. Make sure that the inlet piping/flanges have an opening equal to or greater than the valve's inlet diameter. Make sure that there are no obstructions like gaskets, fittings, etc., in the flow path...

  • Page 7: Valve Maintenance

    Replace the softgoods per the instructions in Section 3.2. • Replacement parts may be found in the appropriate FLOW SAFE softgoods kit, as listed in Section 5.0 of this manual. REASSEMBLY Reassembly of these valves is basically the reverse of the disassembly.

  • Page 8: Valve Testing And Adjustment

    INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 8 of 15 Assemble the spring washer(s), spring, and lifting rod subassembly (if applicable) into the bonnet. Assemble the bonnet, adapter plate (for XXL “C” bonnet), bolts, nuts, and lockwashers to the body.

  • Page 9: Set Pressure Adjustment

    INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 9 of 15 SET PRESSURE ADJUSTMENT NOTES: 1. If the set pressure is being changed, then the spring, spring washer, PA screw, and bonnet may need to be changed. Consult the factory or an authorized FLOW SAFE assembler for the correct parts.

  • Page 10: Accessories

    PCTFE / Kel-F PI / PAI / Vespel PEEK Ekonol-filled Teflon Most common materials listed; contact Flow Safe for availability of other materials. Bushing seal and rear seal are Teflon. SOFTGOODS KIT CONTENTS (See Pages 13 through 15) Standard SG Kit: Lift Lever SG Kit (includes Std.

  • Page 11: Troubleshooting Guide

    INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 11 of 15 TROUBLESHOOTING GUIDE: Symptom Possible Cause Remedy Inadequate bushing torque. Tighten until the bushing bottoms firmly The valve leaks around on the body. the bushing.
  • Page 12 INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 12 of 15 TROUBLESHOOTING GUIDE (continued): Symptom Possible Cause Remedy Spindle is stuck closed. Disassemble the valve and examine the The valve does not sliding surfaces. If damaged, replace.

  • Page 13: F88 Series Valve Assembly Illustrations

    INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 13 of 15 F88 SERIES VALVE ASSEMBLY ILLUSTRATIONS See Page 15 for typical lift lever assembly.
  • Page 14 INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 14 of 15 F88 SERIES VALVE ASSEMBLY ILLUSTRATIONS (continued)
  • Page 15 INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F88 Series Safety Relief Valve Rev. D Page 15 of 15 F88 SERIES VALVE ASSEMBLY ILLUSTRATIONS (continued) F88 Series Manual DUS.FS.0016 03.21...

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F88-3F88-4F88-8F88-gF88-j

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