RE 18321-32/04.2017, Bosch Rexroth Oil Control S.p.A.
Description
A constant flow rate, regardless of system pressures, is
established from 1 to 2. The valve cannot be adjusted for
variable flow output. Flow from 2 to 1 is limited by the
diameter of the selected control orifice and is not pressure
compensated. When pressure in 1 meets the setting of
relief function, flow is allowed to tank through port 2.
Pressure at port 2 is additive to the relief setting of the
valve. VSRF-08S is a compact multifunction solution, able
to replace in example LS relief and LS flow compensator in
one single cartridge.
Flow control, 2-way pressure compensated, fixed setting
with integrated relief pilot operated spool type
Special cavity, 019-E
RE 18321-32
Edition: 04.2017
VSRF-08S 04.08.01 - X - 19 - Z
Technical data
Flow function
Pressure min. - max. 25 - 420 bar (363 - 6090 psi)
Flow range see “Regulated flow range” table
Relief function
Max. pressure 420 bar (6090 psi)
Max. flow 20 l/min. (5.3 gpm)
Fluid temperature range -30 to 100 °C (-22 to 212 °F)
Installation torque 40 - 45 Nm (30 - 33 ft-lbs)
Weight 0.15 kg (0.33 lbs)
Special cavity 019-E (see data sheet 18325-75)
Lines bodies and standard
assemblies
Please refer to section “Hydraulic
integrated circuit” or consult factory
Seal kit
1)
Code: RG19E201052010
material no: R934003560
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 No restrictions
Other Technical Data See data sheet 18350-50
1) Only external seals for 10 valves
Bosch Rexroth Oil Control S.p.A., RE 18321-32/04.2017
2 VSRF-08S | Flow control, 2-way pressure compensated
Dimensions [mm (inches)]
Ordering code
Flow control, 2-way pressure compensated
fixed setting with integrated
relief pilot operated spool type
Series 0/A to L
unchanged performances and dimensions
Version and options standard
Regulated flow range
l/min. (gpm) ± 15% at 25 bar
Adj. press. range
bar (psi)
Press. increase
bar (psi)
Std. setting
bar (psi)
0.4 (0.11) 04
42
35-420
(508-6090)
228
(3306)
350
(5075)
0.7 (0.18) 07
1.2 (0.32) 12
19 Special cavity, 019-E
Preferred types
04.08.01 X 19 Z 00 *
Type Material number
040801041942000 R930065384
040801071942000 R930065385
040801121942000 R930065386
Type Material number
RE 18321-32/04.2017, Bosch Rexroth Oil Control S.p.A.
Flow control, 2-way pressure compensated | VSRF-08S 04.2017 3
Dimensions [mm (inches)]
Characteristic curves
Version 04
Pressure drop
Version 07
Pressure drop
Version 12
Pressure drop
4
Bosch Rexroth Oil Control S.p.A., RE 18321-32/04.2017
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.
VSRF-08S | Flow control, 2-way pressure compensated
Dimensions [mm (inches)]
Dimensions
OPTION
Tamper resistant cap orange
Mat. no. R900168151
