Flow is always allowed to pass from A to B when pressure at A rises above 0.5 bar (7.25 psi). Reverse flow from B to A is possible only when pressure at B rises above the return spring bias pressure; the return B to A cracking pressure can be chosen among the various X values available (see table).
NOTE: the valve is available also with a choice of cracking pressures B-A, as shown by the relevant table: when ordering please specify the desired B-A cracking pressure expressed in “bar” value in the code position (**).
In direction A-B the cracking pressure is always 0.5 bar.
Steel body, zinc plated
NOTE: the valve is available also with a choice of cracking pressures B-A, as shown by the relevant table: when ordering please specify the desired B-A cracking pressure expressed in “bar” value in the code position (**).
In direction A-B the cracking pressure is always 0.5 bar.
They can be fitted in line either when it is necessary to build-up some pressure “B-A” before feeding an actuator (ex.: opening of the mechanical safety brake before starting a motor), or they can be employed to allow free upstream flow “A-B”, and build-up some back pressure “B-A” to hold or stabilize the reverse motion.
