The SD4M valve is a direct operated sequence valve of the spool type, made as a modular version with a mounting surface according to the ISO 4401 standards.
It is used to drive two or more actuators in succession. It is normally closed in rest position. On one side, the spool is subjected to the push of a small piston on which the line (P1) pressure acts and, on the other side, to the adjustment spring. When the pressure in line P1 reaches the calibrated value of the spring, the valve opens and allows passage of the fluid in the controlled line (P). The valve stays open until the pressure in the circuit drops below the set calibration value.
Versions with internal or external pilot are available. The version with external pilot has the port “X” according to the ISO 4401-05-05-0-05 mounting interface.
It can be assembled quickly without use of pipes under the ISO 4401-05 directional solenoid valves.
It is normally supplied with a countersunk hex adjustment screw, locking nut and maximum adjustment travel limiting device.
Tech Specs: p max 320 bar - Q max (see PDF file)