Duplex Stainless Steel Swing Check Valve

Product Description

Duplex Stainless Steel Swing Check Valve

Product Description

Check valve is an automatic valve, which is also called inverted valve or back valve.

It relies on the flow of the medium itself to automatically open and close the disc to prevent the backflow of the medium.  

ln order to avoid any accidents the medium is limited for one-way flow.

Check valves are mainly divided into the following types according to their structure: swing check valve, lifting check valve and butterfly plate check valve.

 

Size:2"-12" /DN50-DN300   
  
Working Pressure:Class125/PN16/PN25   
 
Flanged Standard:ANSI  B16.1, ANSI B16.42,EN1092-2
    
Working Temperature:-20ºC- 120ºC

 

NO	Name	Material
		Chinese Spec	ASTM Spec
1	Cover	QT450-10 HT250	A536 65-45-12 ASTM 126-ClassB
2	Body	QT450-10 HT250	A536 65-45-12 ASTM 126-ClassB
3	Shaft	0Cr18Ni9	ASTM A276 304
4	Seat	ZCuSn10Zn2	ASTM B62

 

NPS	DN	L	Kv	Cv
2	50	203	/	/
2 1/2	65	216	/	/
3	80	241	100.4	117.2
4	100	292	179.3	209.2
5	125	330	/	/
6	150	356	409.9	478.3
8	200	495	725.6	846.8
10	250	622	1101.7	1285.7
12	300	698	1602.9	1870.6

Advantages

1, Automatic open and close under the medium pressure inside the pipe. It is a kind of automatic valve.

2, Prevent medium backflow, one direction flow.

3, Can attach spring kit or counter weight to help the disc close faster, this could eliminate damageable water hammer.

4, It can also attach the air cushion cylinder. At the beginning the valve close quickly. But when disc close to 70% close position, the air cushion cylinder will start to work and help the disc close slowly.
This could prevent the medium in the pipe to build up pressure and damage the pipe system.

Packaging & Shipping

 

 

 

Company Profile

Shanghai Flow Valve & Fitting Co, Ltd. was founded in 1998, mainly in foreign trade export business, has invested in two professional manufacturing factories in Shanghai Jiading Waigang Industrial Zone and Tianjin Wuqing Jingbin Industrial Park.

These two subordinate factories are responsible for the professional production of ANSl, DINBS, GB and other standards of ball valve, butterfly valve, gate valve, stop valve, balance valve, filter, plug valve, control valve and other series of products.

Nearly 80% of the company's products are exported to Europe, America, Middle East, Southeast Asia and other parts of the world and we also conduct technical cooperation and OEM production with many European and American companies.

Shanghai Flow Valve & Fitting Co., Ltd. began to actively participate in major domestic engineering projects in 2003.lt has established five sales centers in Shanghai, Beijing, Guangzhou, Xi'an and Chongqing, and its business covers Northeast China, North China, Northwest China,Southwest China, Central China, South China and other regions.The sales network and after-sales network basically cover most regions of mainland China.

 

Certifications

 

Exhibition

FAQ

Q1: Can I have a sample order for valve?

A1:Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
 
Q2:Do you have any MOQ limit for valve order?
A2: Low MOQ, 1pc for sample checking is available.
 
Q3: How do you ship the goods and how long does it take to arrive?
A3: We usually ship by sea. It usually takes 30 days to arrive. Airline shipping also optional.
 
Q4:How to proceed an order for valve?
A4: Firstly let us know your requirements or application.
      Secondly we quote according to your requirements or our suggestions.
      Thirdly customer confirms the samples and places deposit for formal order.
      Fourthly we arrange the production.
 
Q5:Do you offer guarantee for the products?
A5: Yes, we offer 1 year warranty to our products.

Q6: Why choose us? 
A6: We are a manufacturer, we have been manufacturing for over 20 years.