• Removable NPT orifice
• 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 blocking the “X” pilot internally, a separate pilot pressure can be used via the SAE port to manually hole the valve closed. Pilot pressure & spring forces act to close the valve, forces At “A” & “B” act to open the valve.