Cartridge Valves - Load Holding Valves - Counterbalance - Counterbalance relief compensated

VBSP-16U-RF

RE18320-32-01(2023-11-07)
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 valve applies a balanced piston design allowing relief operation at the valve setting independent of back-pressure at 2. However, the piloted opening of the valve remains subject to additive pressure at port 2. The special design of the poppet allows low delta P during relief function and makes the valve especially suitable for hydraulic motors control.

Valve especially designed for motor applications, where it is requested a low delta P during relief function.

Pressure setting: at least 1.3 times the load induced pressure.

1) At 70% of pressure setting

2) Only external seals for 10 valves

General:
Max. operating pressure:
  • 350 bar (5000 psi)
Max. flow:
  • 240 l/min (63 gpm)
Max. internal leakage 1):
  • 15 drops/min.
Fluid temperature range:
  • -30 to 100 °C (-22 to 212 °F)
Installation torque:
  • 200 - 215 Nm (147 - 159 ft-lbs)
Weight:
  • 0.8 kg (1.76 lbs)
Cavity:
  • SUN T-17A
Line bodies and standard assemblies:
  • Please refer to section “Hydraulic integrated circuit” or consult factory
Seal kit 2):
  • Code: RG16U9020110100
  • material no: R930000995
Fluids:
  • Mineral-based or synthetics with lubricating properties at viscosities of 10 to 500 mm²/s (cSt)
Recommended deegre 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
RE18320-32-02(2023-11-07)
RE18320-32-order(2023-11-07)
RE18320-32-dim(2023-11-07)