Bolted bonnet, swing-type and lift-off valve flap metal sealing
Valve body and valve cover connection form
Class150 ~ Class900 with bolted valve cover; Class1500 ~ Class2500
self-pressure sealed valve cover.
Bonnet gasket form
Class150 ~ Class300 check valve with stainless steel graphite
spiral wound gasket; Class600 check valve available stainless steel
graphite spiral wound gasket can also be used metal ring gasket;
Class900 check valve can be metal ring gasket, Class1500 ~
Class2500 check valve from the Pressure seal metal ring.
Carbon steel check valve seat is usually forged steel materials,
valve seat sealing surface can be sprayed carbide according to
customer requirements, NPS10 '' check valve with separate threaded
screw-in seat, if the user needs welding Seat structure is also
available; NPS12 cut-off valve with welded seat structure;
stainless steel check valve seat is generally used in the overall
type or on the body after welding carbide directly processed seat.
If the user needs, stainless steel check valve seat can also be
used separate threaded screw-in and welded seat structure.
Structural Characteristics of Swing Check Valve in Cast Steel
Large-diameter check valve design rings, easy lifting.
Bolted valve cover, the flange gasket type can be selected
according to the different pressure levels;
CLASS600 check valve can be self-tightening pressure structure.
Valves limit device to prevent the valve flap open position is too
high and can not be closed.
Solid pin installation precision, high strength, to ensure the use
of the valve performance and service life
The rocker has sufficient strength to close the valve flap with
Valve has sufficient strength and rigidity, valve sealing surface
can be based on user requirements surfacing metal materials or
inlaid non-metallic mat