WALTER F8055 Surge Anticipating Relief Valve is mounted in a tee, downstream of the pump check valves. It is designed to anticipate surges to avoid the severe water hammer often associated with power failure surges. When pumping systems are started and stopped gradually, harmful surges do not occur. However, should a power failure take place, the abrupt stopping of the pump can cause dangerous surges in the system which could result in severe equipment damage. Power failure to a pump will usually result in a down surge in pressure, followed by an up surge in pressure. The surge control valve opens on the initial low pressure wave, diverting the returning high pressure wave from the system. In effect, the valve has anticipated the returning high pressure wave and is open to dissipate the damage causing surge. The valve will then close slowly without generating any further pressure surges .
Application Range
- Pump Stations
- Storage Tanks / Reservoir
- Water Supply Systems
- Water treatment and distribution systems
- Power Station Cooling Lines
Testing and Remarks
- Body Strength Test: BS EN 12266-1: 1.5 x PN
- Seal Tightness Test: BS EN 12266-1: 1.1 x PN
* Valve body can be choosed stainless steel or bronze , which suitable for oil and sea water .
Features
- Top and seat ring guided stem and diaphragm assembly for long life and reliability.
- All iron components are fusion epoxy bonded for corrosion resistance.
Full coating on the body and disc internally & externally with an average of 250 microns. Higher coating thicknesses are
available when required.
- Easy maintenance without removal from the main line.
- Nylon reinforced diaphragm for long term service. & Drip tight shut off.
- Globe design for superior control characteristics.
- Ductile iron bodies for higher strength and durability. Stainless Steel or Bronze bodies can be optional
- Corrosion resistant stainless steel seat and disc retainer ring.
- Various pilots and accessories available for configuration into many different applications.
- Special V-Port and double chamber are options, please consult factory.
- Hydro-static test pressure for seat: PN x 1.1 , for shell: PN x 1.5 according to EN 12266-1
WALTER-FSV Company professional produce and supply kinds of Automatic Hydraulic Control Valves, Float Control Valve, Pressure Reducing Valve, Slow Check Valve, Pressure Relief Valve, Soleniod Control Valve.
WALTER-FSV Company accept OEM /ODM orders. and welcome for your calling or emails.
){kind=link}