WALTER F8050 model Pressure Relief/Sustaining Valve is a hydraulically operated, pilot-controlled, modulating valve designed to maintain constant upstream pressure within close limits. This valve can be used for pressure relief, pressure sustaining,back pressure functions 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 may be easily changed by adjusting screw on top of the
pilot.
1. Body/Bonnet: GGG50
2. Spring: SS304
3. Stem: SS / Bronze
4. Disc Retainer: DI/SS/Bronze
5. Seat: SS/Brass/Bronze
6. Seal Rings: NBR/EPDM/Viton
7. Pilot: Stainless Steel or Brass
8. Pipe or Tubes: Coppe or Stainless Steel
9. Working Pressure: PN10/16/25
10. Connection: Flanged acc. To EN1092.2, ISO 7005-2, ANSI/JIS/ AS2129
11. Epoxy Resin Coated to 300 microns inside & outside
12. With Anti-cavitation (Trim) Solution
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.
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