A check valve, clack 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.

Heart valves are essentially inlet and outlet check valves for the heart ventricles, since the ventricles act as pumps.

Quality assurance system
1.Sclerometer
2.Universeal material testing machine
3.High speed analyzer
4.Chemical test
5.Electric analysis scales
6.Nde mt (magnetic powder) inspection

NDE UT (ultasonic) inspection
NDE PT (penetrate) inspecion
PMI spectrum analysis
Hydraulic pressure test
Cryogenic ball valve test
Fire-safe test

Certification

• API-6D
• API-Q1
• API2014
• ISO 9001-2008
• ISO-TS-29001
• CE-PED
• API 607 Fire safe certificate
• API 6FA Fire safe certificate
• China national petroleum corporation approved vendor
• Shanghai high enterprise certificate

Our major products

1. Gate valve series
2. Ball valve series
3. Globe valve series
4. Check valve series
5. Butterfly valve series
6. Other valve series

Exporting is the dominant operation at Kaitai.In the process of KATA brand promotion and building up our distribution channels over the years and now has many satisfied and loyal customers.KATA is well recognized and its products are widely used in the oil and gas industry,power plant,boiler,metallurgy,pressure vessel,water supply and drainage and etc.