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Duplomatic RQR*-P – Unloading Valve (for Circuits with Accumulator)

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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 RQR*-P and RQR*-A valves have not only the normal function of relief valves or safety valves but also the characteristic of freely discharging the pump flow when the set pressure valve is reached.

In order to assure this condition, the use of an accumulator that guarantees pressure in the circuit is required. The use of a check valve prevents the accumulator from discharging through the valve in the open position.

Those valves are made with a balanced shutter main stage that has wide passages for big flows and reduced pressure drops.

Product Specification

Description RM2-W RM3-W RM2-W RM3-W RM3-W
Maximum Operating Pressure 350 bar 350 bar 350 bar 350 bar 350 bar
Maximum Flow Rate 200 l/min 400 l/min 500 l/min 400 l/min 500 l/min
Ambient Temperature Range -20 / +50 °C -20 / +50 °C -20 / +50 °C -20 / +50 °C -20 / +50 °C
Fluid Temperature Range -20 / +80 °C -20 / +80 °C -20 / +80 °C -20 / +80 °C -20 / +80 °C
Fluid Viscosity Range 10 ÷ 400 cSt 10 ÷ 400 cSt 10 ÷ 400 cSt 10 ÷ 400 cSt 10 ÷ 400 cSt
Fluid Contamination Degree According to ISO 4406:1999 class 20/18/15 According to ISO 4406:1999 class 20/18/15 According to ISO 4406:1999 class 20/18/15 According to ISO 4406:1999 class 20/18/15 According to ISO 4406:1999 class 20/18/15
Recommended Viscosity 25 cSt 25 cSt 25 cSt 25 cSt 25 cSt
Mass 3,5 kg 4,3 kg 6,5 kg 10 kg 17 kg

Duplomatic – RQ**-P – Unloading Valve (for Circuits with Accumulator) – Data Sheet

Additional Information

Manufacturer

Duplomatic

Pressure Relief Valves

Pressure Relief Valves with Unloading

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