Quality Inspection for Gate Valve Dn200 - slowly closing flange check valve – Jinbin Valve
Quality Inspection for Gate Valve Dn200 - slowly closing flange check valve – Jinbin Valve Detail:
slowly closing flange check valve
The check valve is mainly composed of valve body, two semicircular valve discs, return spring, oil storage cylinder, slow closing small cylinder bank Needle valve (micro regulating valve), which pushes the two valve discs smoothly by the thrust of the inlet medium. At the same time, the pressure medium at the inlet enters the lower part of the piston in the oil storage cylinder to push the piston, and the oil at the upper part of the piston is respectively pressed into the tail end of the small cylinder on both sides of the valve body through the needle valve, so as to extend the piston rod in the small cylinder. When the pressure of the inlet medium drops below the pressure at the outlet At this time, the disc will close automatically under the action of spring and medium return, but because the piston rod is in the extended position. The valve disc can not be fully closed against it, and about 20% of the area is left for the medium to pass through, which plays the role of hammer elimination.
Suitable size | DN50 – DN1200mm |
Nominal pressure | PN10 / PN16 / PN25 |
Test pressure |
Shell: 1.5 times rated pressure, Seat: 1.1 times rated pressure. |
temp. |
-10°C to 80°C (NBR) -10°C to 120°C (EPDM) |
Suitable medium | water |
Ends connection | BS EN1092-2 PN10 / PN16/ PN25 flange mounting. |
No | Name | Material |
1 | Body | Ductile iron, WCB, stainless steel |
2 | Disc | Ductile iron, WCB, stainless steel |
3 | Stem | SS420 |
4 | Oil cylinder | stainless steel |
5 | Sealing | EPDM, NBR |
Tianjin Tanggu Jinbin Valve Co., Ltd. was founded in 2004, with registered capital of 113 million yuan, 156 employees, 28 sales agents of China,covering an area of 20,000 square meters in total, and 15,100 square meters for factories and offices.It is a valve manufacturer engaged in professional R&D, production and sales,a joint-stock enterprise integrating science, industry and trade.
The company now has 3.5m vertical lathe, 2000mm * 4000mm boring and milling machine and other large processing equipment, multi-functional valve performance testing device and a series of perfect testing equipment
Product detail pictures:



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The very rich projects management experiences and one to one service model make the high importance of business communication and our easy understanding of your expectations for Quality Inspection for Gate Valve Dn200 - slowly closing flange check valve – Jinbin Valve , The product will supply to all over the world, such as: Manchester, America, Sacramento, More than 26 years, Professional companies from all over the world take us as their long-term and stable partners. We are keeping durable business relationship with more than 200 wholesalers in Japan, Korea, USA, UK, Germany, Canada, France, Italian, Poland, South Africa, Ghana, Nigeria etc.

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