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WARNING • Read and understand all instructions before attempting to install, remove, adjust, or perform maintenance on any Victaulic piping products. • Depressurize and drain piping systems before attempting to install, remove, adjust, or perform maintenance on any Victaulic piping products.
I-867-7UF / Pressure Relief Valve / Installation, Operation, and Maintenance Manual HAZARD IDENTIFICATION 3. Wear safety glasses, hardhat, foot protection, and hearing protection. Wear hearing protection if you are exposed to long periods of Definitions for identifying the various hazard levels are provided below.
I-867-7UF / Pressure Relief Valve / Installation, Operation, and Maintenance Manual INSTALLATION Before the valve is installed, flush the pipeline to remove any dirt, scale, or debris. Failure to flush the line before installation may cause the valve to become inoperable.
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I-867-7UF / Pressure Relief Valve / Installation, Operation, and Maintenance Manual TYPICAL INSTALLATIONS Flow System Components Flow 1 Model 867-7UF 2 Fire pump 3 Check valve 4 Pressure gauge Figure 1 Installation Drawing I-867-7UF_6 REV_A...
I-867-7UF / Pressure Relief Valve / Installation, Operation, and Maintenance Manual OPERATION READJUSTING The pressure relief pilot (Figure 2, call out 1) senses inlet pressure and Tools required: modulates the upper control chamber, causing the main valve to throttle, • Flat head screwdriver thus sustaining constant inlet pressure.
I-867-7UF / Pressure Relief Valve / Installation, Operation, and Maintenance Manual MAINTENANCE AND INSPECTION TESTS WEEKLY INSPECTION The system should be inspected under flow conditions. NOTICE Check that the main valve, pilot system, accessories, tubing, and fittings are all in good condition, are free of damage, and are not •...
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