China Check Valve Screw End factory Product name: spring check valve Size: 1/4"-3"(DN8-DN8 Material: SS304,SS316(CF8,CF8M) Pressure:1000psi Suitable: medium water, oil, air and some corrosive liquid etc(WOG) Temperature Range: -20-350 Connection: F/F threaded Type of thread: NPT,BSPT,BSP,PT,DIN2999 ETC Sealing: PTFE,RPTFE,PPL ETC Casting: Investment Part nameMaterial BodyCF8M/CF8 BonnetCF8M/CF8 StemCF8M/CF8 SeatCF8M/CF8 Line barPTFE SpringCF8M/CF8 Unit:mm NPSDNLD 3/8鈥?/p>105611 1/2鈥?/p>156114 3/4鈥?/p>206918 1鈥?/p>258224 1-1/4鈥?/p>329231 1-1/2鈥?/p>4010738 2鈥?/p>5012147 2-1/2鈥?/p>6512764 3鈥?/p>8016880 Vertical check valve refers to the valve that automatically opens and closes the valve flap by relying on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is an automatic valve whose main function is to prevent the backflow of the medium, the reverse rotation of the pump and the driving motor, and the discharge of the container medium. Check valves may also be used on lines supplying auxiliary systems where pressure may rise above system pressure. Check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis). Usually, this kind of valve works automatically. Under the action of fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincident valve flap of the valve flap act on the valve seat, thereby cutting off the flow. Advantage: 1. The three-dimensional check valve is divided into flange and wafer, and has the characteristics of simple structure, few parts and light weight. Vertical check valve is mainly used in various working conditions where it is necessary to prevent the backflow of the medium. 2. The vertical check valve can be used for vertical installation without a spring, and use the weight of the valve disc itself and the pressure of fluid return to play a check function.China Check Valve Screw End factory website:http://www.zjxhvalve.com/check....-valve/check-valve-s