Pressure Sustaining ValveDescription:The valve instantly opens when the pressure in the pipeline exceeds the preset safe level, thus relieving excessive pressure from the pipeline. When the pressure returns to normal, the valve closes slowly, at an adjustable speed. The valves also can be used to sustain upstream pressure to a preset pressure value.
The pressure sustaining valve is mainly used in fire fighting or other water supply systems to prevent the occurrence of over pressure or maintain the pressure of a fire fighting water supply system. After the fire pump is shut down, the valves can also serve to reduce the impact caused by water hammer. It can also be used as the water hammer eliminating device in large water supply systems. The valve utilizes a self-cleaning screen installed at the inlet of the valves control system, so suspended particles of relatively big specific gravities and diameters can not enter the control system. This guarantees the smooth and unobstructed circulation of the system, thereby ensuring the safe and reliable operation of the valve.
Technical SpecificationFlange connection dimension: GB/T 17241.6-1998, GB/T 9113.1-2000
Nominal pressure: PN0.6MPa, PN1.0MPa, PN1.6MPa, PN2.5MPa
Nominal diameter: DN20
~450mm
Suitable medium: Water
Inspection and test: GB/T 13927, API598
Body material: Cast iron, Ductile cast iron
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Technical Specification |
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Typical Installation Diagram |
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Nominal Pressure:1.0~1.6MPa |
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DN:40~450mm |
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Medium: water |
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Work temperature: 0~80 |
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Design Standard:BS5163 |
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Flange Standard:BS EN 1092 |
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OTHER STANDARD ARE AVAILABLE UPON REQUEST. |
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Part Material |
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PART NAME |
Material |
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Body & Bonnet |
Pray Cast Iron, Ductile Cast Iron ,Cast Steel |
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Seat & Bushing & Disc |
Bronze |
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Stem & Spring |
Stainless Steel |
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Diaphragm & O-ring |
NBR or EPDM |
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Seal Ring |
PTFE |
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Dimension Unit:mm |
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DN 40 50 65 80 100 125 150 200 250 300 350 400 450 |
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L 200 203 216 241 292 330 356 495 622 698 787 914 978 |
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H1 516 516 520 537 596 653 709 805 855 953 990 1030 1030 |
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H 610 610 625 642 750 808 864 1135 1185 1325 1385 1445 1445 |
Shanghai Kangquan Valve Co., Ltd. is a professional valves manufacture, with a high-quality workforce of 218, 10 Senior Engineers, 25 MID-level technicians. Provided with two production bases, it covers an area of 15000 square meters with strong technical forces, well-equipped 90 kinds of machine tools and 2, 500 tons of valves output capacity annually.
Kangquan have accumulated a wealth of information and experience in this field and enjoy a high reputation in dealing with both domestic and overseas trading. In 1998, "green valve P&R&D Unit " cooperated with Shanghai University' S has been set up to development of green products successfully-soft seal epoxy coating gate valve, and has gained P&R&D engineering item Third Honors. Our products line includes various kinds of gate valves, globe valves, ball valves, check valves, cock valves, butterfly valves, etc. Always under the ISO 9001 quality assurance system, up to the international advanced standards of ANSI, API, JIS, DIN, BS and so on. Materials mainly include carbon steel, stainless steel, ductile iron and so on. With hand wheel, worm-gear actuator, pneumatic and electric actuator to be selected, widely used in the industries of petrochemical, natural gas, metallurgy, electric power, pharmaceutical, construction, etc...
With highly qualified professionals and first class service, Shanghai Kangquan Valve Co., Ltd. Has established a highly respected enterprise which has been relied on for years. And we will continuously offer customers the most accurate and high quality delivery service possible.
Excellent quality assurance is our sales purpose,
Competitive price is our sales policy,
On time product delivery and responsive service is our standard.
Shanghai Kangquan Valve Co., Ltd. Hopes to work together with you for a better future. Let' S work together building a mutually beneficial relationship that will last for years.
