Overview of pipe backflow preventer:
The utility model has the advantages of reasonable structure, convenient operation, strong sealing performance, firmness and durability, beautiful appearance, etc.. Widely used in power, metallurgy, petroleum, chemical, gas, urban construction, paper making, textiles, medicine, food, ships, water supply and drainage, energy, drilling and other departments.
Working principle of pipe backflow preventer:
The pipe backflow preventer manufactured by Sheng Sheng consists of two separate check valves and a hydraulic drive to the drain valve. The check valve is equipped with a strainer. Due to the local head loss of the check valve, the pressure in the middle cavity is always lower than the pressure at the inlet. This pressure difference causes the drain valve to be closed and the pipe is in normal water supply. In abnormal pressure (i.e., outlet pressure is higher than two, even if the backbone of cavity) check valve can reverse sealing safety discharge valve can automatically open the reverse water emptying, and the formation of air separation, ensure the health and safety of water upstream.
Technical parameters of backflow preventer:
Nominal pressure: 1.0-2.5MP
Nominal diameter: 50-400
Applicable medium: water
Applicable temperature: 0-80 DEG C
Flange standard: GB/T 17241.6 GB9113
Test standard: GB/T 13927 AP1598
Zhejiang Hui Sheng Valve Co. Ltd is a professional production and sales of hydraulic control valves, multifunctional pump control valve, pressure reducing valve, control valve, micro slow close check valve, flow control valve, the intelligent control valve, hydraulic automatic valve, silent check valve, filter mud valve, piston check valve etc. a series of products, widely used in waterworks, power plants, metallurgy, petrochemical, construction, energy, medicine and other water distribution piping system. Companies always adhere to the "quality first, customer first, excellence, and strive to develop] quality policy, and dedication to provide you with the best quality service!
Address: Zhejiang Wenzhou Dong'ou Street Anfeng Industrial Zone China Global Group
Tel: 0577-66999307 66999306
Fax: 0577-66999305
Mobile: 13968957077
Http://www.zjhsfm.co