Pressure Reducing Valves Technical Information
2
1
3
3
4
2
1
2
1
3
Quick Reference
Pressure Reducing, Non-Relieving Model No. Cavity Description Flow* Pressure Page
CP230-2 SDC10-3 Pressure Reducing,
Non-Relieving,
PRC 06 NCS06/3 40 l/min
Direct Acting
Pressure Reducing, Relieving Model No. Cavity Description Flow* Pressure Page
CP230-1 SDC10-3 Pressure Reducing,
Relieving, Direct Acting
Pressure Reducing, Relieving Model No. Cavity Description Flow* Pressure Page
PRR10-PVG SDC10-3 Pressure Reducing,
Relieving,
Direct Acting,
Quick Reference
Designed for PVG
Actuators
40 l/min
[11 US gal/min]
[11 US gal/min]
40 l/min
[11 US gal/min]
40 l/min
[11 US gal/min]
210 bar
[3000 psi]
315 bar
[4500 psi]
210 bar
[3000 psi]
210 bar
[3000 psi]
PR - 4
PR - 5
PR - 6
PR - 7
Pressure Reducing, Non-Relieving Model No. Cavity Description Flow* Pressure Page
CP230-4 SDC10-3 Pressure Reducing,
Non-Relieving,
PPRC 06 NCS06/3 40 l/min
Pilot Operated
40 l/min
[11 US gal/min]
[11 US gal/min]
350 bar
[5000 psi]
315 bar
[4500 psi]
PR - 8
PR - 9
Pressure Reducing, Relieving Model No. Cavity Description Flow* Pressure Page
PRMP 064 SDC10-3 Pressure Reducing,
Relieving,
CP231-3 CP12-3S 115 l/min
Pilot Operated
40 l/min
[11 US gal/min]
[30 US gal/min]
315 bar
[4500 psi]
350 bar
[5000 psi]
PR - 10
PR - 11
Pressure Reducing, Relieving Model No. Cavity Description Flow* Pressure Page
PRR10-DRD SDC10-4 Pressure Reducing,
Relieving,
38 l/min
[10 US gal/min]
207 bar
[3000 psi]
PR - 12
Direct Acting with
Damping Port
* Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.
BC332375439105en-000101 • February 2020
PR - 1
Pressure Reducing Valves Technical Information
1
Application Notes
PRESSURE REDUCING
VALVES
Pressure reducing valves are pressure limiting devices that limit pressure in one portion
of a circuit while leaving system pressure unaected. They are available in direct-acting
and pilot-operated types and as pressure reducing/relieving valves or as pressure
reducing valves only.
Pressure reducing valves
DIRECT ACTING
PRESSURE REDUCING /
RELIEVING VALVES
Direct-acting pressure reducing/relieving valves allow ow to pass from 2 to 1 until
the pressure at 1 reaches the predetermined setting, at which point the spool shifts to
restrict input ow from 2 (reducing mode) or to open ow from 1 to 3 (relieving mode)
as needed to maintain the regulated pressure at 1.
Advantages of direct-acting pressure
reducing valves are:
· Fast response
· Economical
A typical application for direct-acting pressure reducing valves is for pressure control in
systems requiring two or more dierent pressure settings. These valves are best suited
for low ow applications such as hydraulic brake or motor shift.
Direct acting pressure reducing valve
23
Applications Notes
BC332375439105en-000101 • February 2020
PR - 2
Pressure Reducing Valves Technical Information
1
Application Notes
Applications Notes
PILOTOPERATED
PRESSURE REDUCING /
RELIEVING VALVES
Pilot-operated pressure reducing/relieving valves operate similarly to direct-acting
pressure reducing/relieving valves -- the spool allows ow to pass from 2 to 1 until the
pressure at 1 reaches the predetermined setting and forces the pilot poppet o it’s
seat. This creates a pressure dierential across the spool that causes the spool to shift
and maintain regulated pressure at 1 in the same manner as the direct-acting pressure
reducing/relieving valve.
Advantages of pilot-operated relief
valves are:
· Smooth, stable response
· High pressure capability
· Precise pressure control with varying
ow rates
A typical application for pilot-operated pressure reducing valves is for pressure control in
systems requiring two or more dierent pressure settings where high pressure capability
and/or extremely precise pressure control is required.
Pilot-operated pressure reducing valve
23
BC332375439105en-000101 • February 2020
PR - 3
Pressure Reducing Valves Technical Information
1,16
1,45
1,74
2
2
1
3
t
t
Regulated
[100-1400]
[500-2400]
Seals
Pressure Reducing, Non-Relieving, Direct Acting
CP230-2
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a direct-acting pressure-reducing
(non-relieving) valve.
Theoretical performance
psi bar
0
0
0
870
580
290
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
120
100
80
60
Press ure
40
20
0
10L/min
2.6US gal/min
20 30 40 50
Flow
5.3 7.9 10.6 13.
Cross-sectional view
Schematic
Specications
Rated pressure 210 bar [3000 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.25 kg [0.56 lb]
Cavity SDC10-3
40 l/min
[11 US gal/min]
7/8-14 UNF THD
1
23
Press
46.4
Tank
[1.83]
ORDERING
INFORMATION
B=Buna-N 120027
V=Viton 120028
Housing and portsHousing P/N
SE3B=Al,3/8 BSP SDC10-3-SE-3B
SE4B=Al,1/2 BSP SDC10-3-SE-4B
6S =Al, #6 SAE CP10-3-6S
8S =Al, #8 SAE CP10-3-8S
Other housings available
Adjustment option
BC332375439105en-000101 • February 2020
h 1.00 in
41-47 N.m
t
[30-35 lbf.ft]
Type A
adjustment
Type F
adjustment
55.9
[2.20]
Seal kit
0=No Housing No Housing
A= Internal
E= External
F= Tamper resistant
K= Knob
CP230-2-B-6S-A-C - 100
80.0
max.
[3.15]
Crack pressure
Code x 10 = psi
Example: 100 = 1000 psi
Pressure range
A= 4-28 [50-400]
Std. setting 17 [250]
B= 5-55 [75-800]
Std. setting 28 [400]
C= 7-97
Std. setting 69 [1000]
D= 34-166
Std. setting 103 [1500]
bar [psi]
Type E
adjustmen
Type K
adjustmen
PR - 4
Pressure Reducing Valves Technical Information
2
1
3
NCS06/3-SE-3/8
NCS06/3-SE-1/2
T
Pressure Reducing, Non-Relieving, Direct Acting
PRC 06
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a direct-acting pressure reducing
(non-relieving) valve.
Theoretical performance
Reduced pressure
psi bar
60
800
45
600
30
400
15
200
0
0
010203040
l/min
US gal/min
024 6 810
2 1
Cross-sectional view
Schematic
Specications
Rated pressure 315 bar [4500 psi]
Rated Flow 40 l/min
[11 US gal/min]
Weight 0.14 kg [0.31 lb]
Cavity NCS06/3
I
ORDERING
INFORMATION
Ty pe of adjustmen t
E = Internal screw
EN = External screw
M = Handwheel
Setting range
.5 = 1-10 bar [14.5-145 psi]
1 = 10 - 25 bar
2 = 25-80 bar
BC332375439105en-000101 • February 2020
o order this valve with a specic factory setting,contact your Danfoss ICS representative
[145-363 psi]
[363-1160 psi]
PRC 06 - EN - 1 - 00 -V
Seals
V =Viton
B = Buna-N
Seal kit
230000110
230000070
Housing and po rtsHousing P/N
00 =No Housing No Housing
SE3/8 =AL, 3/8 BSP
SE1/2 =AL, 1/2 BSP
SE6S =AL, #6 SAE NCS06/3-SE-6S
SE8S =AL, #8 SAE NCS06/3-SE-8S
Other housings available
PR - 5
Pressure Reducing Valves Technical Information
1,16
1,45
1,74
2,03
06
2
1
3
t
Regulate
[100-1400]
[500-2400]
Seals
Housing and po
O
Pressure Reducing, Relieving, Direct Acting
CP230-1
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a direct-acting pressure reducing/
relieving valve.
Theoretical performance
psi bar
1
0
0
0
870
580
290
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
140
120
100
80
60
Press ure
40
20
0
regulated press
to tank (relieving)
40L/min
20 0204
10.6US gal/min
5.3 0. 5.3 10.6 15.9
regulated press
(reducing)
Flow
0
Cross-sectional view
Schematic
Specications
Rated pressure 210 bar [3000 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.23 kg [0.51 lb]
Cavity SDC10-3
40 l/min
[11 US gal/min]
7/8-14 UNF THD
1
d
23
Press
46.4
[1.83]
Tank
55.9
[2.20]
ORDERING
INFORMATION
B=Buna-N 120570
V=Viton 120571
0=No Housing No Housing
SE3B=Al,3/8 BSP SDC10-3-SE-3B
SE4B=Al,½ BSP SDC10-3-SE-4B
6S =Al, #6 SAE CP10-3-6S
8S =Al, #8 SAE CP10-3-8S
ther housings available
Adjustment option
A= Internal
E= External
F= Tamper resistant
K= Knob
rtsHousing P/N
BC332375439105en-000101 • February 2020
h 1.00 in
t
Type A
adjustment
Type F
adjustment
Seal kit
41-47 N.m
[30-35 lbf.ft]
[3.15]
CP230-1-B-6S-A-C - 100
80.0
max.
Pressure setting
Code x 10psi (0.69 bar)
Example: 100 = 1000 psi (70 bar)
Pressure range
A= 4-28 [50-400]
Std. setting 17 [250]
B= 5-55 [75-800]
Std. setting 28 [400]
C= 7-97
Std. setting 69 [1000]
D= 34-166
Std. setting 103 [1500]
bar [psi]
Type E
adjustment
Type K
adjustmen
PR - 6
Pressure Reducing Valves Technical Information
H
Pressure Reducing, Relieving, Direct Acting, Designed for PVG Actuators
PRR10-PVG
OPERATION
SPECIFICATIONS
DIMENSIONS
Cross-sectional view
mm [in]
relieving valve, designed for PVG
actuators.
Max. pressure in
port 2
Maximum ow 5 l/min
Cartridge Weight 0.23 kg [0.51 lb]
Cavity SDC10-3
210 bar [3000 psi]
[1.3 US gal/min]
Theoretical performance
Pressure Comparison from ports 2-1 at 1 l/min
SchematicsThis is a direct-acting pressure reducing/
Reduced Pressure from ports 2-1
ORDERING
INFORMATION
E
BC332375439105en-000101 • February 2020
B
354001019
PR - 7
Pressure Reducing Valves Technical Information
1,16
1,45
1,74
2,03
9
[1.64]
[1.82]
1.00 in
[300-1500]
[400-3000]
[400-5000]
Ad
Seals
Housing and po
O
Pressure Reducing, Non-Relieving, Pilot Operated
CP230-4
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a pilot-operated pressurereducing (non-relieving) valve.
Theoretical performance
psi bar
1
0
0
0
870
580
290
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
140
120
100
80
60
Press ure
40
20
0
10L/min
20 30 40 50 60
2.6US gal/min
5.3 7.9 10.6 13.2 15.
Flow
Cross-sectional view
7/8 -14 UNF THD
Schematic
Specications
Rated pressure 350 bar [5000 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.20 kg [0.43 lb]
Cavity SDC10-3
64-73 Nm
[47-54 lbf*ft]
40 l/min
[11 US gal/min]
1
Regulated
2
Pressure
46.2
ORDERING
INFORMATION
B=Buna-N 120027
V=Viton 120028
0=No Housing No Housing
SE3B=Al,3/8 BSP SDC10-3-SE-3B
SE4B=Al,1/2 BSP SDC10-3-SE-4B
6S =Al, #6 SAE CP10-3-6S
8S =Al, #8 SAE CP10-3-8S
ther housings available
justment option
A= Internal
E= External
F= Tamper resistant
K= Knob
rtsHousing P/N
BC332375439105en-000101 • February 2020
3
Tank
Seal kit
41.7
CP230-4-B-6S-A-C - 150
Type A
adjustment
Type F
adjustment
Pressure setting
Code x 10psi (0.69 bar)
Example: 150 = 1500 psi (105 bar)
Pressure range
A= 14-55 [200-800]
Standard 28 [400]
B= 21-103
Standard 69 [1000]
C= 28-207
Standard 103 [1500]
D= 28-345
Standard 103 [1500]
bar [psi]
PR - 8
Pressure Reducing Valves Technical Information
40
40
80
NCS06/3-SE-3/8
NCS06/3-SE-1/2
T
Pressure Reducing, Non-Relieving, Pilot Operated
PPRC 06
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a pilot-operated pressure reducing
(non-relieving) valve.
Theoretical performance
psi
0
600
0
200
0
bar
280
210
140
Press ure
70
US gal/min
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
0
L/min
0
10
2
4
Flow
20
30
6
10
8
Cross-sectional view
Schematic
Specications
Rated pressure 315 bar [4500 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.14 kg [0.31 lb]
Cavity NCS06/3
40 l/min
[11 US gal/min]
ORDERING
INFORMATION
Ty pe of adjustmen t
E = Internal screw
EN = External screw
M = Handwheel
Setting range
1 = 10-70 bar [145-1015 psi]
2 = 30-140 bar
3 = 70-210 bar
o order this valve with a specic factory setting,contact your Danfoss ICS representative
[435-2031 psi]
[1015-3046 psi]
BC332375439105en-000101 • February 2020
PPRC 06 - EN - 1 - 00 -V
Seals
V =Viton
Omit = Buna-N
Seal kit
230000110
230000070
Housing and po rtsHousing P/N
00 =No Housing No Housing
SE3/8 =AL, 3/8 BSP
SE1/2 =AL, 1/2 BSP
SE6S =AL, #6 SAE NCS06/3-SE-6S
SE8S =AL, #8 SAE NCS06/3-SE-8S
Other housings available
PR - 9
Pressure Reducing Valves Technical Information
1000
1500
2000
2500
3000
3400
46
SDC10-3-SE-3B
SDC10-3-SE-4B
T
Pressure Reducing, Relieving, Pilot Operated
PRMP 064
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a pilot-operated pressure
reducing/relieving valve.
Theoretical performance
psi
240
200
Press ure
100
500
0
L/min
US gal/min
150
50
0
40
Dump 1 3
30
8
10
20
6
Reduced pressure 2 1
010
10
Flow
224
0
20
154 SUS (33 cSt) hyd. oil @ 100° F (38° C)
bar
Cross-sectional view
Schematic
Specications
Rated pressure 315 bar [4500 psi]
Rated Flow 40 l/min
[11 US gal/min]
Weight 0.21 kg [0.46 lb]
Cavity SDC10-3
40
30
10
8
ORDERING
INFORMATION
Adjustmen t
E = Internal screw
EN = External screw
M = Handwheel
Setting r ange
1 = 10-70 bar [145-1015 psi]
2 = 30-140 bar
3 = 70-210 bar
o order this valve with a specic factory setting,contact your Danfoss ICS representative
BC332375439105en-000101 • February 2020
PRMP 064 - EN - 1 - SE3/8 -V
[435-2031 psi]
[1015-3046 psi]
Seals
V =Viton
Omit = Buna-N
Seal Kit
354001019
354000919
Housing and po rtsHousing P/N
00 =No Housing No Housing
SE3B =Al, 3/8 BSP
SE4B =Al, 1/2 BSP
6S =Al, #6 SAE CP10-3-6S
8S =Al, #8 SAE CP10-3-8S
Other housings available
PR - 10
Pressure Reducing Valves Technical Information
435
145
290
03
CP231-3-B-10S-A-A-050
Adjustment options
A= Internal
F=Tamper Resistant
E= External
K= Knob
Pressure range
A= 14-55 bar [200-800 psi]
B= 21-103 bar [300-1500 psi]
C= 27-207 bar [400-3000 psi]
D= 27-345 bar [400-5000 psi]
Pressure setting
Code x 10psi (0.69 bar)
Example: 050 = 500 psi (34 bar)
Seals Seal kit
B=Buna-N 120335
V=Viton 120336
Housing and portsHousing P/N
0=No Housing No Housing
4B =Al, 1/2 BSP CP12-3S-4B/2B
6B =Al, 3/4 BSP CP12-3S-6B/2B
10S =Al, #10 SAE CP12-3S-10S/4S
12S =Al, #12 SAE CP12-3S-12S/4S
Other housings available
Pressure Reducing, Relieving, Pilot Operated
CP231-3
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a pilot-operated pressure
reducing/relieving valve.
Theoretical performance
psi bar
300
3625
2175
0
0
0
250
200
150
Pressu re
100
50725
0
US gal/min
L/min
regulated press
to tank (relieving)
regulated press
012040 8080 40
Flow
(reducing)
Cross-sectional view
Schematic
Specications
Rated pressure 350 bar [5000 psi]
Rated ow at 7 bar
[100 psi]
Weight 0.27 kg [0.60 lb]
Cavity CP12-3S
211 2121 11
115 l/min
[30 US gal/min]
ORDERING
INFORMATION
BC332375439105en-000101 • February 2020
PR - 11
Pressure Reducing Valves Technical Information
2
USgal/min
t
Pr
1 = 4-27 bar [50-400 psi]
Standard Setting 21 bar
2 = 5-55 bar [70-800 psi]
Standard Setting 35 bar
3 = 7-96 bar [100-1400 psi]
Standard Setting 69 bar
4 = 35-165 bar [500-2400 psi]
Standard Setting 104 bar
#
Pressure Reducing, Relieving, Direct Acting with Damping Port
PRR10-DRD
OPERATION
SPECIFICATIONS
DIMENSIONS
mm [in]
This is a direct-acting pressure reducing/
relieving valve, with damping port.
Theoretical performance
33 cSt[154 SUS] hyd.oil@38°
bar
psi
1740
1450
1160
870
580
290
0
l/min
Relieving
120
100
80
60
40
20
0
50 40 30 20 10 01020304050
13.2 10.67.9 5.32.6 02.6 5.37.9 10.6 13.
C[100° F]
Reducing
Cross-sectional view
Schematic
4
2
1
Specications
Rated pressure 207 bar [3000 psi]
Rated Flow at 7 bar
[100 psi]
Weight 0.29 kg [0.64 lb]
Cavity SDC10-4
38 l/min
[10 US gal/min]
3
1
ORDERING
INFORMATION
BC332375439105en-000101 • February 2020
2
62.35
[2.45]
7/8-14 UNF
3
1.00 in.
41-47 Nm [30-35 lbf-ft]
Type A
Adjustment
Type F
4
55.37
[2.18]
Adjustment
1.00 in.
[3.15]
Type E
adjustment
Type K
adjustmen
80
max.
PRR10-DRD-4-E-104-B-00
essure Range
[300 psi]
[500 psi]
[1000 psi
[1500 psi]
]
Adjustment Type
A = Internal
E = External
F = Tamper Resistant
K = Knob
Housing and ports
00 = No Housing
3B = Al, 3/8 BSP
4B = Al, 1/2 BSP
6S = Al, #6 SAE
8S = Al, #8 SAE
Seals Seal Kit
B = Buna-N 120023
V = Viton 120024
Pressure Setting
104 = 104 bar [1500 psi]
XXX = Standard Setting
Housing Part
No Housing
CP10-4-3B
CP10-4-4B
CP10-4-6S
CP10-4-8S
P108 370E
PR - 12
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