RE 18318-51/03.2016, Bosch Rexroth Oil Control S.p.A.
Technical data
Max. operating pressure
port 2 (P)
350 bar (5000 psi)
Max. pressure admitted
port 1 (A)
280 bar (4000 psi)
Max. flow 100 l/min (26 gpm)
Standard internal pilot
orifice diameter
0.6 mm
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 81 - 95 Nm (60 - 70 ft-lbs)
Weight 0.4 kg (0.88 lbs)
Cavity CA-12A-3N (see data sheet 18325-70)
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
1)
Code: RG12A3010520100
material no: R930000941
Fluids Mineral-based or synthetics with
lubricating properties
at viscosities of 10 to 500 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
Initially, flow passes freely from 2 to 1. When the pressure at
1 exceeds the pressure setting, the valve acts to restrict input
flow at 2. This increases the pressure drop through the valve
and maintains consistent pressure at 1. The spring chamber
is drained at 3 to prevent a build-up of back-pressure against
the spool.
Pressure reducing, pilot operated spool type
Common cavity, Size 12
RE 18318-51
Edition: 03.2016
Replaces: 09.2009VRPP-12A 04.93.08 - X - 57 - Z
Characteristic curve
Flow Q
Pressure Δp
2
Bosch Rexroth Oil Control S.p.A., RE 18318-51/03.2016
Bosch Rexroth Oil Control S.p.A.
Via Leonardo da Vinci 5
P.O. Box no. 5
41015 Nonantola – Modena, Italy
Tel. +39 059 887 611
Fax +39 059 547 848
compact-hydraulics-cv@boschrexroth.com
www.boschrexroth.com/compacthydraulics
© This document, as well as the data, specifications and other information set
forth in it, are the exclusive property of Bosch Rexroth Oil Control S.p.a.. It
may not be reproduced or given to third parties without its consent. The data
specified above only serve to describe the product. No statements concerning
a certain condition or suitability for a certain application can be derived from
our information. The information given does not release the user from the
obligation of own judgment and verification. It must be remembered that our
products are subject to a natural process of wear and aging. Subject to change.
VRPP-12A | Pressure reducing, pilot operated spool type
Dimensions [mm (inches)]
Type Material number
049308035710000 R901109737
049308035720000 R901109738
049308035735000 R901109739
Type Material number
Dimensions
Leakproof hex. socket screw
OPTION
Tamper resistant cap
ordering code: 11.04.23.002
Mat. no. R930000752
Ordering code
04.93.08 X 57 Z 00 *
Series 0/A to L
unchanged performances and dimensions
Pressure reducing,
pilot operated spool type
Version and options standard
SPRINGS
Adjustments
Adj. press. range
bar (psi)
Pressure increase
bar/turn (psi/turn)
Std. setting
bar (psi)
(reduc mode)
03 Leakproof hex. socket screw
10 10-140 (145-2000) 48 (696) 100 (1450)
20 70-280 (1000-4000) 88 (1276) 200 (2900)
57 Common cavity, Size 12
35
140-350 (2000-5000) 140 (2030) 280 (4000)
Preferred types
Note: Special settings available. Contact factory authorized representative
for ordering code.
