• Removable NPT orifice plug
•SAE O-ring port for access to NPT orifice, gauging, or remote piloting
Provides free-flow from “A to B” & check function from “B to A” by connecting the “X” pilot to the “B” port of the valve insert.
By not connecting the “X” pilot internally, a separate pilot pressure can be used via the SAE port to manually hold forces at “A & B”. Pilot pressure & spring forces act to close the valve, forces At “A” & “B” act to open the valve.
Sizes 25mm to 63mm
80mm “Top” face shown above