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NIPO Check Valve

Jun 16, 2017

A check valve,non-return valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction.

Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. 

There are various types of check valves used in a wide variety of applications. 

Check valves are often part of common household items. 

Although they are available in a wide range of sizes and costs, check valves generally are very small, simple, or inexpensive. 

Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. 

The bodies (external shells) of most check valves are made of plastic or metal.

An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. 

Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.


NIPO is special in the production and sales of check valve,mainly cover:

Wafer type dual plate check valve,

Wafer type single plate swing check valve,

Wafer type single plate lift check valve,

Diameter of valves varies from DN15 to DN2000(1/2”-72” ), 

working pressure varies from PN1.6MPa to 42 MPa(150lb to 2500lb), 

and working temperature from -196℃ to +570℃; 

The main body adopts carbon steel,low temperature steel,dual phase steel(F51/F53),titanium alloy, 

aluminium bronze,Inconel,SS304,SS304L,SS316,SS316L,chrome-molybdenum steel,Monel(400/500),20# alloy and Hastelloy,etc.

We welcome all the world customers to contact us for more cooperation.
With our years of technical knowledge and experience,we assure you,
NIPO VALVE will be one of your best partners in China.