Our well-equipped facilities and superb good quality control throughout all stages of manufacturing enables us to guarantee total buyer gratification for OEM Supply China 8 Inch RF Flanged Cast Steel Non Return Check Valve, Only for accomplish the good-quality products to fulfill customer’s demand, all of our merchandise have been strictly inspected before shipment.
Our well-equipped facilities and superb good quality control throughout all stages of manufacturing enables us to guarantee total buyer gratification forChina 8 Inch Non Return Valve,RF Flanged Non Return Valveìcheck valve 4 inch, As a well educated, innovative and energetic staff,we have been responsible for all elements of the research, design, manufacturing, sales and distribution. With studying and developing new techniques,we’re not only following but also leading the fashion industry. We listen attentively to the feedback from our customers and give instant communication. You will instantly feel our expertise and attentive service.
Lifting check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent medium backflow, also known as check valve, one-way valve, counterflow valve, and back pressure valve. Check valve is an automatic valve. Its main function is to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can also be used in pipelines to supply auxiliary systems where pressure may rise above system pressure. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).
Technical data
PN(MPa)Nominal pressure | 1.6 | 2.5 | 4.0 | |
(MPa)Test pressure | Shell strength test | 2.4 | 3.75 | 6.0 |
Seal test (Liquid) | 1.76 | 2.75 | 4.4 | |
Seal test (Gas) | 0.5~0.7 | |||
Suitable medium | water,steam,oil | PNitric acids | Roil | |
Suitable temperature |