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Cameron GENERAL VALVE Twin Seal 8811 User Manual

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ENGINEERED & PROCESS VALVES
GENERAL VALVE
®
Twin Seal
Double Block and Bleed Plug Valve
GENERAL VALVE
®
Installation, Operation and Maintenance Manual
®
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Cameron GENERAL VALVE Twin Seal 8811 Specifications

General IconGeneral
BrandCameron
ModelGENERAL VALVE Twin Seal 8811
CategoryControl Unit
LanguageEnglish

Summary

Installation

Installation Guidelines

Covers valve orientation, flow direction, clearance, fasteners, and gear housing setup.

Operation

Pressure Testing and Valve Mechanism

Details hydrostatic testing and the operational principles of the plug-type valve.

Series 400, 800 & 900 Construction

Integral Bushing and Gland Types

Details integral bushing/retaining ring and bolted gland constructions.

Bushing Configurations

Explains single and double gland bushing types.

Bearing Configurations

Describes dual retention and internal/external bearing arrangements.

Series 8800 Construction

Valve Operators

Model 375H

Exploded view and disassembly/assembly for the Model 375H operator.

Models 500H & 625H

Exploded view and disassembly/assembly for Models 500H and 625H operators.

Models 376G & 510G

Cross-section and exploded view for Models 376G and 510G.

Models 625G, 751G & 755G

Cross-section and exploded views for Models 625G, 751G, and 755G.

Models 1261G & 1261-7G

Cross-section and exploded views for Models 1261G and 1261-7G.

Model 1276G

Cross-section and exploded view for Model 1276G.

Model 1500G

Cross-section and exploded view for Model 1500G.

Differential Thermal Relief (DTR) System

System Overview and Function

Covers scope, background, and how the DTR system works.

Actuator Considerations

Discusses DTR importance for motor, hydraulic, pneumatic, and manual valves.

Operation & Maintenance

Routine Maintenance Tasks

Covers annual and semi-annual tasks for valve care.

Troubleshooting and Parts

Addresses leak troubleshooting, slip replacement, and parts ordering.

Trademark Information

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