Pilot operated check valves ERV700
The cartridge design of the pilot operated check valves ERV700 allows a compact integration on cylinders and motors. This assembly offers an enhancement of the tractive strength and also a protection against pipe burst.
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Operating pressure
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up to 700 bar
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Max. flow rate
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25 l/Min
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Porting
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NG 6
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Features/Design
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Advantages
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Ball-seat construction
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Leakage free
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Porting NG 6 according to CIN 24340
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Advantageous release function
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External surface corrosion-free
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Compact design
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- Compact integration on cylinders and motors
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Hydraulic fluid
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Mineral oil according to DIN 51524 (other fluids on request)
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Fluid temperature range
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– 20 bis 80 °C
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Ambient temperature range
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– 20 to 50 °C
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Viscosity range
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5 to 400 mm²/s
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Porting
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NG 6 according to DIN 24340 / ISO 4401 / CETOP RP 121 H
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Max. operating pressure connection P, A, B
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700 bar
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Max. pressure admissible connection T
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350 bar
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Pressure ratio
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modular subplate (parts in body) pe/p = 1:5.4
cartridge 1:7.2
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Max. flow rate
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25 l/min
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Back pressure at 25 l/min
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modular subplate (parts in body) 5 bar
cartridge 30 bar
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Cracking pressure check valve
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modular subplate (parts in body) ca. 1 bar
cartridge ca. 6 bar
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Filtration (recommendation)
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according to NAS 1638, class 6 or ISO/DIN 4406 17/15/12
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Weight
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see dimension drawings
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Material / surface treatment
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housing: steel, galvanized, chromated
outer parts cartridge: corrosion protection
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