THM – ZDRD (XT) – Modular Pressure Reducing Valve

Description

Features of ZDRD (XT) 

• Sandwich plate valve
• 2 kinds of pressure ranges
• 2 kinds of adjusting elements:
• Rotary knob
• Hexagon screw with sleeve and protective cap
• Pressure reducing in port A, B or P
• Check valve, optional

Model DA

At rest, the valve is normally open, the fluid is flow freely from port A1 to port A2. The pressure in port A2 acts on the piston area opposite to the compression through the control channel (5). When the pressure at port A exceeds the set value of spring (3), the control spool (2) is moved to the control position, the pressure at port A remains stable. The signal and control oil are supplied internal from port A through the control channel (5).

Model DP and DB

In model DP, the pressure is reduced in port P1, the signal and control oil are supplied internal from port P1. In model DB, the pressure is reduced in port P1, but control oil is taken from port B. When the directional valve in position P to A, the pressure of port B must not exceed the set pressure. Otherwise, the pressure at port A will be decrease.