Gate Valve has rising stem and non-rising stem types with solid
wedge and flexible wedge for different
mediums. Rising stem gate valves are used when shut off is required and a quick visual indicator of open/closed position is needed. The
stem of rising stem gate valve drives the gate to lift and lower
together, and the transmission thread on the valve stem is outside
the valve body. Therefore, the position of the gate can be
intuitively judged according to the moving direction and position
of valve stem, and the transmission thread is lubricated and
protected from fluids, but it requires a large installation
space.The Wedge of gate valve include Solid taper wedege,flexible
wedge,slpid wedge,parallel disk.The body bonnet joint type include
Screwed Bonnet,Bolted Bonnet,Welded Bonnet,Pressure-Seal Bonnet.The
gate valve end connection include flange end(RF,FF,RTJ),Butt-weld
end and socket weld end.