Pilot operated check valve type ERVM (500+)

  • Porting NG 4
  • Operating pressure: up to 500 bar
  • Flow rate: up to 25 l/min

Features

  • Leakage free in closed position
  • Operating ressure supported closing
[Translate to EN:] Entsperrbares Rückschlagventil Typ ERVM (500+)

Applications

The pilot operated check valve ERVM is a part of the 500+ series. It is a springloaded seated valve. It is used for leakage free closing of the flow in one direction and free flow in the other direction. The closed direction can be unlocked with pilot pressure at port X. The compact cartridge design allows a direct integration into cylinders and motors. This assembly offers a pipe burst protection and an increase of the system stiffness.

Design

  • Seated valve
  • Compact design
  • Cartridge and in manifold
  • External surface corrosion-free

Technical data

Hydraulic fluid Mineral oil according to DIN 51524 (other fluids on request)
Fluid temperature range -20 to 80 °C
Ambient temperature range -20 to 80 °C
Viscosity range 5 to 400 mm2/s
Porting NG 4
Max. operating pressure port A/P 700 bar
Unlock pilot pressure port X see characteristics
Max. flow rate 25 l/min
Pressure loss at 12 l/min: 12 bar
at 25 l/min: 30 bar
Cracking pressure (P - A) 5 bar
Filtration (recommendation) According to NAS 1638, class 6 resp. class 17/15/12 ISO/DIN 4406
Weight 0,055 kg (cartridge)
Material/surface treatment Cartridge body: high tenisile corrosion-free steel
Cone: hardened steel