Self-sealing gate valve

Self-sealing gate valve

Self-sealing gate valve has a slab gate member and a pair of opposed seat assemblies on opposite sides of the gate member. The seat assemblies loosely fit in recesses in the housing and the dimensions of the gate member, seat assemblies and housing recesses are such that there is controlled interference between all sealing surfaces on assembly. An emergency sealant system provides emergency sealant to the face of the seat assemblies.
    Self-sealing gate valve is bestowed with such advantages: one is flexible seated; one is that the valve opening can be more intuitive. In order to determine the valve opening in long distance and take appropriate measures promptly to open and close quickly and reliably, so it is often used in fire fighting system. RRHX resilient seated gate valve, resilient seated gate valve, and valve seat seal.

The structure and  material of Self-sealing gate valve goes as follows：
Body is made of gray iron, ductile iron and cast steel; wedge is made of ductile iron, EPDM or nitrile rubber; plug comes from nitrile rubber and EPDM; sidling face is made of nitrile rubber; yoke is also made of gray iron, ductile iron and cast steel; both stem and bolt are made of Stainless steel; stem nut is from copper alloy; hand wheel is made of malleable iron.