Ductile Cast Iron Flange End Heavy Block Spring-Loaded Swing Check Valve

Product Description

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. 
 

 

Specification

NO	Name	Material
		Chinese Spec	ASTM Spec
1	Cover	QT450-10	A536 65-45-12
2	Body	QT450-10	A536 65-45-12
3	Seat	0CrNi18	ASTM A276 304
4	Shaft	1Cr13	ASTM 410
5	Spring	0Cr18Ni9	ASTM A276 304

 

Size:2.5"-12" /DN65-DN300

Working Pressure: Class150/ Class125/PN16

Flanged Standard:ANSI  B16.1,ANSI B16.42, EN1092-2,GB/T17241.6

Working Temperature:-20ºC- 120ºC

 

 

NPS	2 1/2	3	4	5	6	8	10	12
DN	65	80	100	125	150	200	250	300
L	216	241	292	330	356	495	622	698
Kv	-	10	22	-	51	100	136	207
Cv	-	12	26	-	59	117	158	242

 

Features/Advantages:


1. Close quickly before pump stop, eliminate the water hammer of the backflow medium, prevent the damage of the system shock.

2.  Can be installed both vertical and horizontal.

3.  Valve seat can be resilient material or metal material. It´s optional according to the medium.

4.  Small Volume, light weight, need less space.

5. This valve should be install to the outlet side of the pump to prevent the backflow of the medium. This valve is one way flow direction.

 

Production Process

Equipment

 

Certifications

 

Exhibition

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 Zoneand 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, the 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.

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.