| MVPP & VPP |
Flows to 250 l/min
Pressures up to 350bar
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Duplomatic pilot operated non return valves, sometimes referred to as pilot operated check valves, comprise of a poppet that is held onto its seat by a spring & hydraulic pressure. The valve is piloted by an external pressure in the other service port that overcomes the normal spring & hydraulic pressure to open. Typical applications are for holding loaded actuators in position.
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ADVANTAGES
PILOT OPERATED FUNCTION
Valves are normally spring closed with the facility to open by applying pilot pressure.
ALL PORT OPTIONS AVAILABLE
Units can be configured with a single check valve on A or B ports or dual units with check valves on both A & B ports.
SUBPLATE MOUNTINGS TO CETOP 3 , 5 & 7
Units supplied with mounting flanges to the latest CETOP 3, 5 & 7 standards.
Ordering
D-MVPP
D-VPP4M
D-VPP07M
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Description
Pilot check valve to CETOP 3. 350
bar & 75 lpm. Define control to A
port B port or both.
Pilot check valve to CETOP 5. 320
bar & 100lpm. Define control to A
port B port or both.
Pilot check valve to CETOP 7. 320
bar & 250lpm. Define control to A
port B port or both. |
Temperature
Oil temperature should be between +30ºC & +60ºC during normal operation. Oil life is greatly reduced if temperature exceeds 60ºC. As a general rule, oil life is halved for each 8ºC temperature exceeds 60ºC.
Filtering
It is necessary to keep the level of contamination within a hydraulic system at an acceptable level to ensure trouble free operation. Filtration should always be specified at a level that protects the most sensitive item or component in the system. |
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