Products Details

The multi-function pressure relief holding valve is a hydraulically operated, pilot valve controlled regulator designed to maintain a constant upstream pressure within a strict range. This valve can be used for pressure relief, pressure holding, back pressure or unloading functions in bypass systems. During operation, the valve is driven by the line pressure through the pilot valve control system, which is opened quickly to maintain a stable line pressure, but closed gradually to prevent pressure fluctuations. Operation is fully automatic and the pressure Settings can be easily changed by adjusting the screws on top of the pilot valve.
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In addition, multi-function adjustable pressure reduction/pressure holding valves are installed in the water supply or drainage system of tall buildings to reduce the required inlet pressure. The valve ensures that the outlet pressure is stably maintained at the set value under the action of its own energy, that is, the outlet pressure will not change due to changes in the inlet pressure and flow rate. A self-cleaning filter is installed at the entrance of the valve control system to prevent large proportion and large diameter particles from flowing into the system to ensure that the system is unimpeded. Valve quick action, long service life.
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In the water supply system of high-rise buildings, especially in firefighting and other occasions, the multi-function pressure relief/pressure holding valve will automatically open to release pressure when the pipeline pressure exceeds the set pressure of the valve to ensure pipeline safety. At the same time, it can also be used as a pressure holding valve to ensure that the upstream pressure is sufficient. The valve can provide a constant set pressure, and if the pressure is too high, the valve will quickly open and release the overpressure. The valve closes steadily and smoothly, preventing pressure fluctuations.
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Shanghai Kangquan Valve Co., Ltd. is a professional valve manufacturer with 218 highly qualified employees, including 10 senior engineers and 25 intermediate technicians. The company is equipped with two production bases, covering an area of 15,000 square meters, has a strong technical force, equipped with 90 kinds of machine tools, and an annual output of 2,500 tons of valves. Kangquan Valve has accumulated rich information and experience in this field, and enjoys a high reputation in domestic and foreign trade. In 1998, the "Green Valve Research and Development Unit" cooperated with Shanghai University to successfully develop a green product - soft seal epoxy coated gate valve, and won the third prize of research and development project. The company's product line includes all kinds of gate valves, globe valves, ball valves, check valves, plug valves, butterfly valves, etc., always follow the ISO 9001 quality assurance system, and meet ANSI, API, JIS, DIN, BS and other international advanced standards. Materials mainly include carbon steel, stainless steel, ductile iron and so on. Can choose hand wheel, worm gear transmission, pneumatic and electric transmission, widely used in petrochemical, natural gas, metallurgy, electric power, pharmaceutical, construction and other industries... .
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Rotork offers VRP precision relief valves in two models: VRP-032 (relatively high pressure and low flow) and VRP-048 (low pressure and high flow). Key features of these valves include set point repeatability of ±3%, seal reset pressure - almost zero leakage reset pressure ≥90% cracking pressure. It is important to note that the set point is affected by the back pressure of the exhaust port and will decrease accordingly. The main spring load is not transferred to the seat, reducing deformation and wear.
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The above is about the multi-function pressure relief valve some Chinese introduction.