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Duplomatic MZD – Direct Operated Three Way Pressure Reducing Valve

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Duplomatic Oleodinamica represents the real alternative in the hydraulics market.

Duplomatic’s wide range of products and worldwide service network, grant its users a real competitive advantage.

The Duplomatic MZD valve is a three-way spool type direct operated pressure reducing valve. It is normally open in the rest position and the hydraulic fluid passes freely from the P1 line to the P line.

The spool is subjected to the line P pressure on one side, and on the other side by the adjustment spring. When the pressure in line P exceeds the value set by the spring, the valve closes until the pressure in P (reduced) equals the calibrated value.

The valve construction provides good adjustment sensitivity with reduced drainage flow. The drainage is connected to line T inside the valve.

The three-way design provides protection of the secondary circuit from pressure surges since it allows a reverse flow from the actuator to the T discharge line.

It is made as a modular version with ports according to the ISO 4401 (CETOP RP 121H) standards and can be assembled quickly, without use of pipes, under the ISO 4401-03 (CETOP 03) solenoid valves.

The variable adjustment version is supplied with a hexagonal head adjustment screw. Upon request, it can be equipped with a SICBLOC adjustment knob.

The fixed adjustment version is available set at value 20, 25 or 30 bar pressure.

P max 350 bar – Q max (see table of performances)

Product Specification

Description Units
Maximum Operating Pressure 350 bar
Maximum Pressure on Port T 10 bar
Maximum Flow Rate in the Controlled Lines  50 l/min
Maximum Flow Rate in the Free Lines  75 l/min
Drainage Flow Rate  ≤ 0,08 l/min
Ambient Temperature Range  -20 / +50 °C
Fluid Temperature Range  -20 / +80 °C
Fluid Viscosity Range  10 ÷ 400 cSt
Fluid Contamination Degree  According to ISO 4406:1999
Class 20/18/15
Recommended Viscosity  25 cSt
Mass  1,4 kg

Duplomatic – MZD – Direct Operated Three Way Pressure Reducing Valve – Data Sheet

Additional Information



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