RE 18319-37/03.2016, Bosch Rexroth Oil Control S.p.A.
Technical data
Max. operating pressure 350 bar (5000 psi)
Max. flow 120 l/min. (32 gpm)
Pilot ratio 2:1
Max. internal leakage 5 drops/min.
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 81 - 95 Nm (60 - 70 ft-lbs)
Weight 0.25 kg (0.55 lbs)
Cavity CA-12A-3C (see data sheet 18325-70)
MTTFd 150 years see data sheet 18350-51
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
1)
Code: RG12A9010520100
material no: R901111379
Fluids Mineral-based or synthetics with
lubricating properties
at viscosities of 5 to 800 mm
2
/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
1) Only external seals for 10 valves
Description
When pressure at 1 rises above the spring bias pressure,
the poppet is lifted and flow allowed from 1 to 2. The
valve is closed (checked) from 2 to 1. When sufficient pilot
pressure is present at port 3, the pilot piston acts to hold the
poppet on its seat and flow is blocked from 1 to 2. Precision
machining and hardening processes allow virtually leak-free
performance in the checked condition.
Pilot operated check,
pilot to close
Common cavity, Size 12
RE 18319-37
Edition: 03.2016
Replaces: 09.2009VUPC-12A 04.34.04 - X - 57 - Z
Characteristic curve
Flow Q
Pressure Δp