Stacking Pressure-Reducing Valve, ISO Size 05
Q
max
= 140l/min (37 gpm),p
max
= 350bar (5000 psi)
Sandwich design, seated pilot stage, electrically operated
Series SWDRVPD…
1/5
Reference: 400-P-307501-EN-02
Issue: 04.2021
S With cartridge valve, type WDRVPC-5
S Interface to ISO 4401-05-04
S 2-pressure switching HI/LO
S Inline function in the P, A or B line
S Internal pilot-oil drain to port T
S 3 pressure ranges available
S With pressure-gauge port in function P
S Excellent stability over the whole pressure
and flow range
S External cartridge parts are with zinc-nickel plating
S The slip-on coil can be rotated, and it can be
replaced without opening the hydraulic envelope
S Various plug-connector systems and voltages
are available
1 Description
Series SWDRVPD-5… sandwich valves are high perfor
mance, electrically operated pressure-reducing valves with
a size 05 interface to ISO 4401-05-04. The main compo
nents of the valves are a sandwich body (stack-mounting
body) and the screw-in cartridge (type WDRVPC-5…).
They have a seated pilot stage and a spool-type main stage.
These sandwich valves are used in mobile and industrial
applications. In addition, a pressure gauge connection M
(G1/4") available on the secondary side in function P. All ex
ternal parts of the cartridge are zinc-nickel plated according
to DIN EN ISO 19 598 and are thus suitable for use in the
harshest operating environments. The slip-on coils can be
replaced without opening the hydraulic envelope and can
be positioned at any angle through 360°. The sandwich
body is sealed at its manifold side (the connections side) by
means of O-rings fitted in counterbores.
2 Technical data
General characteristics Description, value, unit
Designation Stacking-pressure-reducing valve
Design sandwich design, seated pilot stage, electrically operated
Mounting method 4 x ∅ 6.5 holes for M6 cap screws
Size size 07 interface to ISO 4401-05-04 / DIN 24 340 A10
Weight 8.75 kg (19.29 lb)
Mounting attitude unrestricted
Ambient temperature range -25°C … +50°C (-13°F … +122°F)
Surface corrosion protection without
400-P-307501-EN-02/04.2021
Series SWDRVPD…
2/5
Hydraulic characteristics Description, value, unit
Maximum operating pressure - in port P, A, B
- in port T
350bar (5000 psi)
250 bar (3600 psi)
Flow range …140l/min (37 gpm)
Nominal pressure ranges … 350 bar (…5000 psi)
…250 bar (…3600 psi)
…100 bar (…1400 psi)
Flow direction see symbol
Hydraulic fluid HL and HLP mineral oil to DIN 51 524;
for other fluids, please contact BUCHER
Hydraulic fluid temperature range -25°C … +80°C (-13°F … +176°F)
Viscosity range 10…500mm
2
/s (cSt), recommended 15...250mm
2
/s (cSt)
Minimum fluid cleanliness
Cleanliness class to ISO 4406:1999
class 20/18/15
Electrical characteristics Description, value, unit
Supply voltage 12V DC, 24V DC
115V AC, 230V AC (50…60Hz)
Supply voltage tolerance ±10%
Nominal power consumption V DC = 27 W
V AC = 25 W
Relative duty cycle 100%
Protection class to ISO20653 / EN60529 IP 65 / IP 67 / IP 69K, see “Ordering code”
(with appropriate mating connector and
proper fitting and sealing)
Electrical connection DIN EN 175301-803, 3-pin 2 P+E (standard)
for other connectors, see “Ordering code”
3 Symbol
Function in P Function in A Function in B
TPAB
M
TPABTPAB
SWDRVPD-…-P-E-10… SWDRVPD-…-AZR-C-10… SWDRVPD-…-BZR-D-10…
4 Performance graphs
IMPORTANT!
Detailed performance data and other hydraulic
characteristics can be found in the data sheet for
the pressure-reducing cartridge that is fitted (data
sheet ref. no. 400-P-295401-EN).
ATTENTION!
The performance figures in the data sheet for the
cartridge valve refer just to the cartridge itself.
Take into account the additional pressure drop in
the body into which it is fitted.
400-P-307501-EN-02/04.2021
Series SWDRVPD…
3/5
5 Dimensions & sectional view
(1.97)
(0.05)
(0.50)
(1.81)
(0.47)
(2.13)
(0.63)
(1.05)
70
1.25
12.6
16
49.95
26.2
2
1
1)
2)
13
M
A
= 6.5 [Nm] ± 10%
(4.5 ft−lbs ± 10%)
27
M
A
= 65 [Nm] ± 10 %
M
A
= 2.7 [Nm] ± 10%
(35 ft−lbs ± 10%)
(2 ft−lbs ± 10%)
31
12
54
46
221.9
105.9
(8.74)
(4.17)
(2.76)
(1.22)
116
48.6
49.85
1.25
25.55
5858
31
1246
54
105.8
221.8
15.6
1)
2)
(0.61)
(4.17)
(1.96)
(8.73)
(2.28) (2.28)
(2.13)
(1.22)
(1.01)
(0.05)
(1.91)
(4.57)
(1.81)
(0.47)
30
(1.18)
G1/4”
24.3
(0.96)
1)
Valve side
2)
Connections side (manifold side)
400-P-307501-EN-02/04.2021
Series SWDRVPD…
4/5
6 Installation information
IMPORTANT!
When installing the valve, make sure that the ma
ting face (the manifold interface) aligns with the
valve interface. Do not confuse the sandwich
valve’s manifold side and directional-valve side.
Information on setting the pressures can be found
in the data sheet for the pressure-reducing car
tridge that is fitted (ref. no. 400-P-295401-EN).
ATTENTION!
Only qualified personnel with mechanical skills
may carry out any maintenance work. Generally,
the only work that should ever be undertaken is to
check, and possibly replace, the seals. When
changing seals, oil or grease the new seals tho
roughly before fitting them.
NBR seal kit no. DS-493-N
3)
Item Qty. Description
1 5 O-ring no.014 ∅12,42x1,78 N90
2 1 NBR seal kit no. DS-261-N
for pressure-reducing cartridge WDRVPC-5…
IMPORTANT!
3)
Seal kit with FKM (Viton) seals, no. DS-493-V
7 Ordering code
S = sandwich design
WDRVP= electr. operated, pressure-reducing valve
D ... Q = standard model - see relevant data sheets
Z ... R = special features - please consult BUCHER
5 = pressure function 5 (internal pilot-oil drain to T)
D = cavity type DD
O = de-energized open
35 = pressure range … 350 bar (…5000 psi)
25 = pressure range … 250 bar (…3600 psi)
10 = pressure range … 100 bar (…1400 psi)
P-E = function in P stacking body-type E
AZR-C = function in A in inlet with bypass check valve, plate type C
BZR-D = function in B in inlet with bypass check valve, splate type D
10 = ISO size 05 interface
(blank) = NBR (Nitrile) seals (standard)
V = FKM (Viton) seals
(special seals - please contact BUCHER)
... = voltage e.g. 24 (24 V)
D = current DC
A = current AC
(blank) = DIN EN 175301-803 connection with mating plug (standard, IP65)
M100 = DIN EN 175301-803 connection without mating plug
C = Kostal plug connection (IP65)
JT = Junior Timer radial plug connection (with protection diode, IP65)
IT = Junior Timer axial plug connection (with protection diode, IP65)
D = Deutsch plug connection 45° DT04-2P (IP67/69K) mating plug not supplied
DT = Deutsch plug connection 45° DT04-2P (with protection diode, IP67/69K)
S = AMP Superseal 1.5 (IP67) / Metri-Pack 150 (IP65) plug connection
F = flying leads (500 mm)
_
Ex.
24
_
D 10S WDRVP --AZR-C-5 DD O 35 -
400-P-307501-EN-02/04.2021
Series SWDRVPD…
5/5
8 Related data sheets
Reference Description
400-P-050101 Size 05 interface to ISO 4401-05-04
400-P-120110 Coils for screw-in cartridge valves
400-P-290501 El. operated pressure-reducing cartridge, size 10, series WDRVPC-5…
E 2021 by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen
www.bucherhydraulics.cominfo.ch@bucherhydraulics.com
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
Classification: 430.305.305.330.330.300