Pressure Sustaining/Relief Valve is a hydraulically operated, pilot- controlled, modulating valve designed to maintain constant upstream pressure within close limit.
Pressure Sustaining/Relief Valve is a hydraulically operated, pilot- controlled, modulating valve designed to maintain constant upstream pressure within close limit. This valve can be used for pressure relief, pressure sustaining, and back pressure function in a by-pass system. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges.
Operation is completely automatic and pressure settings maybe easily changed by adjusting screw on top of the pilot.
Features:
1 Top and seat ring guided stem and diaphragm assembly for long Iife and reliability.
2 All iron components are fusion epoxy bonded for corrosion resistance.
3 Easy maintance without removal from the main line.
4 Nylon reinforced diaphragm for long time service .
5 Drip tight shut off.
6 Globe design for superior control characteristics.
7 Ductile iron bodies for higher strength and durability.
8 Corrosion resistant stainless steel seat and disc retainer ring.
9 Various pilots and accessories available for configuration into many different applications.
Special V-Port and double chamber are options, please consult factory.
10 Meet standards BS EN 1074-5, ISO 5208. BS EN 12266-1, BS EN 558-1,
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