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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-867-42T / Pressure Reducing 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-867-42T / Pressure Reducing Valve / Installation, Operation, and Maintenance Manual PRESSURE AND FLOW RATINGS The 867-42T pressure reducing valve, sizes 1 .5-, 2-, 2 .5-, 3-, 4-, 6-, 8-, and 10-inch, are rated for the following pressure and flow capacities detailed in Table 1 .
INSTALLATION A typical installation of the 867-42T features a pilot valve for the automatic reduction of water pressure from a high upstream value to a preset lower downstream value, regardless of fluctuating upstream pressure or flow . The actuator design ensures quick and smooth valve action .
I-867-42T / Pressure Reducing Valve / Installation, Operation, and Maintenance Manual OPERATION When outlet pressure rises above the pre-set pressure, the pilot valve The 867-42T pressure control valve reduces water pressure throttles, enabling pressure to accumulate in the control chamber automatically from a high inlet pressure to a lower, pre-set outlet (Figure 2, call out 1) .
I-867-42T / Pressure Reducing Valve / Installation, Operation, and Maintenance Manual START UP When performing this procedure, refer to Figure 2 . Open a hydrant, relief valve, drain valve, or other flow-consumer downstream of the 867-42T pressure reducing valve, creating a system demand .
I-867-42T / Pressure Reducing 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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