H61H / Y power station valve, H61H-250, H61H-320, H61Y-P54100V, H61Y-P57170V Features and Benefits ● product design and manufacture according to ASME B16.34, E101 and JB / T3595-93 standard requirements ● Body, bonnet are forging. Clapper overall quenching, and can move up and down in the valve body, when the media back by medium pressure valve will automatically close. ● seat welded structure, valves, valve seat sealing surface using cobalt-based alloy welding (STL), with wear-resistant, high temperature, anti-abrasion performance and service life. ● check valve should be installed vertically the upper horizontal pipe medium flows from the bottom up flow (positive flow) ● central self-tight sealing structure, the higher the pressure, the better sealing performance design and manufacturing standards:. ● design and manufacture: ASME B16.34, JB / T3595, E101 ● pressure and temperature: ANSI B1 6.34, JB / T74, JB / T3595, E101 ● structure length: ANSI B16.10, E101, GB / T15188.1, JB / T2766