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OPERATION, & MAINTENANCE MANUAL
Revision:
Date of Issue:
Approved By:
F80 SERIES
SPRING-OPERATED
SAFETY VALVE (GAS)
• TYPE F84 (
PLASTIC-SEATED
• TYPE F85 (
ELASTOMER-SEATED
• -4, -6, -8 Orifices (
• -4, -6, -8, -F, -G, -H, -J Orifices (
INSTALLATION,
)
)
WITH INTEGRAL BONNET
G
03/26/2025
Andrew Roberts
Director of Engineering & Quality
)
WITH BOLTED BONNET
)
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Table of Contents
Related Manuals for Flowsafe F84
Summarization of Contents
Valve Description, Operation, and Startup
Valve Description and Operation
Explains the F80 Series safety valve as a direct-acting spring-loaded pressure relief valve for gas service.
Valve Service Envelope and Specifications
Details valve specifications including body size, orifice size, maximum set pressure, and seat materials.
Storage and Handling Guidelines
Provides guidelines for storing and handling Flow Safe valve assemblies and parts to maintain their condition.
Valve Installation Procedures
Provides instructions on how to properly install the F80 Series safety valve, including orientation and piping considerations.
Valve Startup Procedures
Outlines the procedure for starting up the F80 Series safety valve after installation, including initial checks.
Valve Maintenance Procedures
Disassembly of 'B' Body Integral Bonnet Valves
Details the step-by-step process for disassembling the 'B' body (integral bonnet) type F80 Series safety valves.
Reassembly of 'B' Body Integral Bonnet Valves
Provides instructions for reassembling the 'B' body (integral bonnet) type F80 Series safety valves after maintenance.
Disassembly of 'C', 'D', 'E' Body Bolted Bonnet Valves
Outlines the procedure for disassembling the 'C', 'D', 'E' body (bolted bonnet) type F80 Series safety valves.
Reassembly of 'C', 'D', 'E' Body Bolted Bonnet Valves
Details the reassembly process for 'C', 'D', 'E' body (bolted bonnet) type F80 Series safety valves.
Valve Testing, Adjustment, and Marking
Test Equipment Requirements
Lists the required equipment for performing tests and adjustments on the F80 Series safety valves.
Setting and Adjustment Tolerances
Specifies the acceptable tolerances for set pressure and seat tightness adjustments.
Set Pressure and Blowdown Adjustments
Explains how to adjust the set pressure and blowdown of the F80 Series safety valves.
Seat Tightness Verification
Describes the procedure and criteria for verifying the seat tightness of the safety valve.
Lift Lever Operation
Details how to operate the lift lever to verify valve spindle and seat functionality.
Secondary Pressure Zone Test
Outlines the steps for performing a secondary pressure zone test on the valve.
Wiring, Tagging, Marking, and Documentation
Covers procedures for wiring, tagging, marking, and documentation requirements for repaired valves.
Valve Accessories
Soft Goods Kits (SGK)
Lists available soft goods kits for different valve configurations and provides part numbers.
Assembly Illustrations
F84 Series Plastic-Seated Valve Assembly (Integral Bonnet)
Shows the assembly of the F84 Series plastic-seated valve with an integral bonnet.
F84 Series Plastic-Seated Valve Assembly (Bolted Bonnet)
Illustrates the assembly of the F84 Series plastic-seated valve with bolted bonnet types C, D, and E.
F85 Series Elastomer-Seated Valve Assembly (Integral Bonnet)
Provides an assembly illustration for the F85 Series elastomer-seated valve with an integral bonnet.
F85 Series Elastomer-Seated Valve Assembly (Bolted Bonnet)
Shows the assembly of the F85 Series elastomer-seated valve with bolted bonnet types C, D, and E.
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