1
2
FOR ALUMINUM OR STEEL VALVE HOUSING CONFIGURATIONS SEE PAGE 0-013.1
FOR ALUMINUM OR STEEL VALVE HOUSING CONFIGURATIONS SEE PAGE 0-013.1
Pat, # 5,546,980
Pat, # 5,546,980
PRESSURE DROP ( P)
PRESSURE DROP ( P)
60
60
G.P.M.(135 SUS)
G.P.M.(135 SUS)
1000
1000
0
PSI
PSI
10
10
20
20
2000
2000
3000
3000
30
30
40
40
50
50
69
69
BAR
BAR
138
138
207
207
227
227
L/M (28,5 cSt)
L/M (28,5 cSt)
4000
4000
76
76
38
38
151
151
114
114
189
189
[44,5]
[44,5]
1.75"
1.75"
[46,0]
[46,0]
1.81"
1.81"
276
276
2.75"
2.75"
2.75"
2.75"
[69,9]
[69,9]
[69,9]
[69,9]
HEX
HEX
1.31"
1.31"
[33,4]
[33,4]
.315" [8,0] HEX.
.315" [8,0] HEX.
2
1
SEALS
SEALS
12 = 1.062"-12 UNF
12 = 1.062"-12 UNF
BASIC
BASIC
SIZE
SIZE
PORTS
PORTS
0
04BX
04BX
06BX
06BX
10TX
10TX
12TX
12TX
= CARTRIDGE ONLY
= CARTRIDGE ONLY
= G 1/2" BSPP
= G 1/2" BSPP
= G 3/4" BSPP
= G 3/4" BSPP
= SAE - #10
= SAE - #10
= SAE - #12
= SAE - #12
"A" - ALUM. HOUSING
"A" - ALUM. HOUSING
"S" - STEEL HOUSING
"S" - STEEL HOUSING
N = BUNA "N"
N = BUNA "N"
V = VITON
V = VITON
30 = 300 TO 3000 PSI
30 = 300 TO 3000 PSI
50 = 500 TO 5000 PSI
50 = 500 TO 5000 PSI
15 = 100 TO 1500 PSI
15 = 100 TO 1500 PSI
PRESSURE RANGE
PRESSURE RANGE
= ADJUSTING SCREW
= ADJUSTING SCREW
= CAPPED
= CAPPED
= TAMPERPROOF
= TAMPERPROOF
= HANDKNOB
= HANDKNOB
= METAL HANDKNOB
= METAL HANDKNOB
FOR ADJUSTMENT CONTROL
FOR ADJUSTMENT CONTROL
OPTIONS SEE PAGE 0-050.0
OPTIONS SEE PAGE 0-050.0
ADJUSTMENT
ADJUSTMENT
S
S
C
C
T
T
K
K
M
M
RVPP-12-X-X-X-XX
RVPP-12-X-X-X-XX
RELIEF VALVE PILOT OPERATED,
RELIEF VALVE PILOT OPERATED,
POPPET TYPE, FREE REVERSE FLOW
POPPET TYPE, FREE REVERSE FLOW
Steel = 70/75 Ft-Lb. [95/102 Nm]
Steel = 70/75 Ft-Lb. [95/102 Nm]
TORQUE:
TORQUE:
Aluminum = 55/60 Ft-Lb. [74/81 Nm]
Aluminum = 55/60 Ft-Lb. [74/81 Nm]
Reference: 520-P-030430-EN-00/09.2015
RVPP-12
SPECIFICATIONS
SPECIFICATIONS
FEATURES AND BENEFITS
FEATURES AND BENEFITS
DESCRIPTION
DESCRIPTION
OPERATIONS
OPERATIONS
PRESSURE RELIEF WITH FREE REVERSE FLOW, screw in cartridge valve.
PRESSURE RELIEF WITH FREE REVERSE FLOW, screw in cartridge valve.
This unit is a PILOT OPERATED, POPPET TYPE, ADJUSTABLE, HYDRAULIC
This unit is a PILOT OPERATED, POPPET TYPE, ADJUSTABLE, HYDRAULIC
All cartridge valves are 100% functionally tested.
All cartridge valves are 100% functionally tested.
Valve is available with screw, tamperproof, capped and handknob adjustments.
Valve is available with screw, tamperproof, capped and handknob adjustments.
All external carbon steel parts are plated for longer life against the elements.
All external carbon steel parts are plated for longer life against the elements.
A unique self aligning (floating) cage provides very low hysteresis
A unique self aligning (floating) cage provides very low hysteresis
Hardened precision fitted poppet & cage provides reliable, long life.
Hardened precision fitted poppet & cage provides reliable, long life.
Overset protection-pilot spring can not go solid.
Overset protection-pilot spring can not go solid.
Adjustment screw can not be backed out of the valve.
Adjustment screw can not be backed out of the valve.
Pressure in tank port (2) will add to the bias spring setting,
Pressure in tank port (2) will add to the bias spring setting,
VALVE CAVITY: #C1220, See Page 0-013.0.
VALVE CAVITY: #C1220, See Page 0-013.0.
WEIGHT: 0.63 lb [.25 kg] cartridge only.
WEIGHT: 0.63 lb [.25 kg] cartridge only.
SKV-1221 for Viton.
SKV-1221 for Viton.
SEAL KIT NUMBER: SKN-1221 for Buna "N".
SEAL KIT NUMBER: SKN-1221 for Buna "N".
DEFINITION OF CRACK: evident at 0.06 GPM (0.25 LPM)
DEFINITION OF CRACK: evident at 0.06 GPM (0.25 LPM)
INTERNAL LEAKAGE: 5 drops/min (.25 cc/m) @ 90% of crack pressure.
INTERNAL LEAKAGE: 5 drops/min (.25 cc/m) @ 90% of crack pressure.
FLOW: 60.0 GPM [230 L/M] nominal. See performance chart.
FLOW: 60.0 GPM [230 L/M] nominal. See performance chart.
PROOF PRESSURE: 10,000 PSI [700 Bar]
PROOF PRESSURE: 10,000 PSI [700 Bar]
OPERATING PRESSURE: 5,000 PSI [350 Bar]
OPERATING PRESSURE: 5,000 PSI [350 Bar]
anti-cavitation and it has a very fast response and low hysteresis.
anti-cavitation and it has a very fast response and low hysteresis.
This cartridge relief valve offers a free reverse flow suitable for
This cartridge relief valve offers a free reverse flow suitable for
from its seat thus opening the valve.
from its seat thus opening the valve.
sufficient pressure is present at port #1 to force the pilot poppet
sufficient pressure is present at port #1 to force the pilot poppet
This valve (RVPP) blocks flow from port #1 to port #2 until
This valve (RVPP) blocks flow from port #1 to port #2 until
FILTRATION: 25 microns or better.
FILTRATION: 25 microns or better.
INSTALLATION: No restriction.
INSTALLATION: No restriction.
and reliable operation.
and reliable operation.
Leakproof screw adjustment.
Leakproof screw adjustment.
Industry common cavity.
Industry common cavity.
and is limited to 2000 PSI.
and is limited to 2000 PSI.
POPPET TYPE, FREE REVERSE FLOW
POPPET TYPE, FREE REVERSE FLOW
RELIEF VALVE PILOT OPERATED,
RELIEF VALVE PILOT OPERATED,
MIL-H-5606, SAE-#10, SAE-#20, etc.
MIL-H-5606, SAE-#10, SAE-#20, etc.
OPERATING MEDIA: All general purpose hydraulic fluids such as
OPERATING MEDIA: All general purpose hydraulic fluids such as
OPERATING TEMPERATURE: -40° to +250° F. [-40° to +120° C.]
OPERATING TEMPERATURE: -40° to +250° F. [-40° to +120° C.]
5000 PSI [350 Bar] = Steel - Unplated.
5000 PSI [350 Bar] = Steel - Unplated.
VALVE HOUSINGS: 2500 PSI [175 Bar] = Aluminum - Anodized.
VALVE HOUSINGS: 2500 PSI [175 Bar] = Aluminum - Anodized.
info.el@bucherhydraulics.com www.bucherhydraulics.com/commoncavity
2015 by Bucher Hydraulics, Inc., 2545 Northwest Parkway, Elgin, Illinois 60124, USA
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.
©
Reference: 520-P-030430-EN-00/09.2015
RVPP-12