Cartridge Valves - Load Holding Valves - Counterbalance - Counterbalance standard

VBSN-12A

RE18320-03-01(2023-11-02)
Description

When pressure at 2 rises above the spring bias pressure, the check seat is pushed away from the piston and flow is allowed from 2 to 1. When load pressure at 1 rises above the pressure setting, the direct-acting, differential area relief function is activated and flow is relieved from 1 to 2. With pilot pressure at 3, the pressure setting is reduced in proportion to the stated ratio of the valve, until fully open with free-flow from 1 to 2. The spring chamber is drained to 2, and any back-pressure at 2 is additive to the pressure setting in all functions. Valve design prevents spring going solid and complete unscrewing during adjusting.

¹) At 70% of pressure setting

²) Only external seals for 10 valves

Pressure setting: at least 1.3 times the load induced pressure and maximum 1.5 times catalogue max nominal setting.

General:
Max. operating pressure:
  • 350 bar (5000 psi)
Max. flow:
  • 120 l/min (32 gpm)
Max. internal leakage¹):
  • 15 drops/min.
Fluid temperature range:
  • -30 to 100 °C (-22 to 212 °F)
Installation torque:
  • 81 - 95 Nm (60 - 70 ft-lbs)
Weight:
  • 0.39 kg (0.86 lbs)
MTTFD:
  • 150 years see RE 18350-51
Cavity:
  • CA-12A-3C (see data sheet 18325-70)
Adjustment:
  • according to ISO 4413 with sealed adjustment screw to prevent oil leakage during adjustment
Salt spray test:
  • 500h according to DIN EN ISO 9227:2017-07
Lines bodies and standard assemblies:
  • Please refer to section “Hydraulic integrated circuit” or consult factory
Seal kit²):
  • Code: RG12A9010520100
  • material no: R901111379
Fluids:
  • Mineral-based or synthetics with lubricating properties at viscosities of 10 to 500 mm²/s (cSt)
Recommended degree of fluid contamination:
  • Nominal value max. 10µm (NAS 8) / ISO 4406 19/17/14
Installation position:
  • No restrictions
Other Technical Data:
  • See data sheet 18350-50
RE18320-03-02(2023-11-02)

Note: Special settings available with optional tamperproof cap. Contact factory authorized representative for ordering code.

RE18320-03-order(2023-11-02)
RE18320-03-dim(2023-11-02)