504
Pilot Operated Check Valves
Specifications
Model Numbers
Rated Flow
L /min (U.S.GPM)
CP F-10- - -50
CP F-16- - -50
Max. Operating
Pressure
MPa (PSI)
250
600
(66)
(159)
25
25
(3630)
(3630)
Valve
Model
Numbers
Socket Head Cap Screw
Qty.
Japanese Standard "JIS" &
European Design Standard
N.American
Design Standard
CP G-03
CP G-06
CP G-10
4
4
6
M10 45 Lg.
M10 50 Lg.
M10 55 Lg.
3/8-16 UNC 1-3/4 Lg.
3/8-16 UNC 2 Lg.
3/8-16 UNC 2-1/4 Lg.
CP T -04 -50
Series
Number
Type of
Connection
Valve
Size
Design
Number
Design
Standards
03
Cracking Pres.
MPa (PSI)
F-
Special
Seals
-E
Drain
Connection
03
06
10
03
06
10
50
50
50
50
50
50
None:
Japanese Std. "JIS"
European Design Std.
90:
N. American Design Std.
80:
None:
Japanese Std. "JIS" &
European Design Std.
90:
N. American Design Std.
T:
Threaded
Connection
G:
Sub-plate
Mounting
F:
Special Seals
for Phosphate
Ester Type
Fluids
(Omit if not
required)
CP:
Pilot Operated
Check Valve
CPD:
Decompression
Type Pilot
Operated
Check Valve
04:
20:
35:
50:
0.04 (6)
0.2 (29)
0.35 (50)
0.5 (70)
None:
Internal
Drain
E:
External
Drain
Threaded Connection
Model NumbersType of Connection
CPT/CPDT-03-
- -50
CPT/CPDT-06-
- -50
CPT/CPDT-10- - -50
CPG/CPDG-03- - -50
CPG/CPDG-06- - -50
CPG/CPDG-10- - -50
Max. Operating Pres.
MPa (PSI)
Approx. Mass
kg (lbs.)
Cracking Pres.
MPa (PSI)
Rated Flow
L /min (U.S.GPM)
25 (3630)
25 (3630)
40
125
250
40
125
250
Sub-plate Mounting
0.04
0.2
0.35
0.5
(6)
(29)
(50)
(70)
0.04
0.2
0.35
0.5
(6)
(29)
(50)
(70)
(10.6)
(33)
(66)
(10.6)
(33)
(66)
3.0
5.5
9.6
3.3
5.4
8.5
(6.6)
(12.1)
(21.2)
(7.3)
(11.9)
(18.7)
Yuken can offer flanged connection valves
described below.
For details, contact us.
Mounting Bolts
Socket head cap screws in the table below are included.
Model Number Designatioin
Graphic Symbols
Internal Drain Type External Drain Type
Rated flow is the approximate flow rate, when there is a free flow pressure drop of maximum 0.3 MPa (44 PSI), the fluid has a specific
2
gravity of 0.85 and a kinematic viscosity of 20 mm /s (98 SSU), and the cracking pressure is 0.04 MPa (6 PSI).
These check valves allow flow in one direction and prevent flow in the reverse direction, until operated by pilot pressure
to allow free reverse flow. The specified cracking pressure is required to open the valve to allow free flow direction.
■ Pilot Operated Check Valves
505
DIRECTIONAL CONTROLS
Pilot Operated Check Valves
E
Pilot Operated Check Valves
(Fig.a) (Fig.b)
P
1
P
2
P
2
P
1
DR
Valve
Model
Numbers
Japanese Standard "JIS"
Sub-plate
Model Numbers
Thread
Size
Sub-plate
Model Numbers
Thread
Size
Sub-plate
Model Numbers
Approx.
Mass
kg (lbs.)
Thread
Size
European Design Standard N. American Design Standard
CP G-03
CP G-06
CP G-10
1.6 (3.5)
1.6 (3.5)
2.4 (5.3)
3.0 (6.6)
4.8 (10.6)
5.7 (12.6)
Rc 3/8
Rc1/2
Rc 3/4
Rc 1
Rc 1-1/4
Rc 1-1/2
3/8 BSP.F
1/2 BSP.F
3/4 BSP.F
1 BSP.F
1-1/4 BSP.F
1-1/2 BSP.F
3/8 NPT
1/2 NPT
3/4 NPT
1 NPT
1-1/4 NPT
1-1/2 NPT
HGM-03-20
HGM-03X-20
HGM-06-20
HGM-06X-20
HGM-10-20
HGM-10X-20
HGM-03-2080
HGM-03X-2080
HGM-06-2080
HGM-06X-2080
HGM-10-2080
HGM-10X-2080
HGM-03-2090
HGM-03X-2090
HGM-06-2090
HGM-06X-2090
HGM-10-2090
HGM-10X-2090
Sub-plate
Instructions
Operation of internal and external drain types
When the outlet side P1 is directly connected to the tank in reversed
free flow (Fig. a), the internal drain type is normally used. When
the back pressure is applied to the outlet side P
1 (Fig. b), be sure
to use the external drain type.
Minimum pilot pressure characteristics
That depends on the pressure of the inlet side P
2 in the reversed
free flow.
This value can be determined from the characteristics chart.
Cautions on replacement of 20 design low cracking pressure
.sevlav ngised 05 htiw sevlav epyt
In 20 design valve with cracking pressure of 0.035 MPa (5 PSI)
(Code "5"), for closing the valve completely and certainly, it was
necessar y to introduc e the pressurize d oil into the drain port to
push down the piston compulsory.
While in 50 design valve with cracking pressure of 0.04 MPa (6
PSI) (Code "6"), it has such structure that the valve can be closed
completely and certainly without introducing the pressurized oil
into the drain port. On the contrary, what is worse is that if the
pressurized oil is introduced into the drain port, the oil acts towards
the direction o f opening the valve, which i s very dangerous and
has to be absolutely avoided. Therefore, please do not supply any
pressurized oil into the drain port in case of using 50 design valve.
The machinery, if misused due to failure to observe
the "Cautions" on the left, may perform
unforeseeable movements, resulting in a disastrous
accident.
WARNING
Sub-plates are available, specify the sub-plate model number from the table above. When sub-plates are not used, the mounting surface should
have a good machined finish.
Sub-plates are shared with those for H Type Pressure Control Valves. Refer to pages 244 to 246 for dimensions.
506
Pilot Operated Check Valves
Model Numbers
B
Dimensions mm (Inches)
C
CPT/CPDT-03- - -50
CPT/CPDT-03- - -5080
CPT/CPDT-03- - -5090
CPT/CPDT-06- - -50
CPT/CPDT-06- - -5080
CPT/CPDT-06- - -5090
CPT/CPDT-10- - -50
CPT/CPDT-10- - -5080
CPT/CPDT-10- - -5090
DEFH KLA
"N"
Thd.
"P"
Thd.
Thread Size
Rc 3/8
3/8 BSP.F
3/8 NPT
Rc 3/4
3/4 BSP.F
3/4 NPT
Rc 1-1/4
1-1/4 BSP.F
1-1/4 NPT
Rc 1/4
1/4 BSP.F
1/4 NPT
Rc 1/4
1/4 BSP.F
1/4 NPT
Rc 1/4
1/4 BSP.F
1/4NPT
80
(3.15)
40
(1.57)
39
(1.54)
150.5
(5.93)
84.5
(3.33)
38
(1.50)
Dia.
60
(2.36)
29
(1.14)
67.5
(2.66)
26.5
(1.04)
96
(3.78)
48
(1.89)
47
(1.85)
171.5
(6.75)
92.5
(3.64)
62
(2.44)
SQ.
72
(2.83)
35
(1.38)
75.5
(2.97)
31
(1.22)
140
(5.51)
70
(2.76)
64
(2.52)
203.5
(8.01)
113
(4.45)
80
(3.15)
SQ.
82
(3.23)
40
(1.57)
96
(3.78)
43
(1.69)
FREE
C
B
A
D
E
F
H
J
L
K
Free Flow Inlet or Reversed
Controlled Flow Outlet Port
"N"
Thd.
Free Flow Outlet or
Reversed Controlled
Flow Inlet Port
"N"
Thd.
Drain Port
"P"
Thd.
Pilot Port
"P"
Thd.
CPT/CPDT-03- - -50/5080/5090
CPT/CPDT-06- - -50/5080/5090
CPT/CPDT-10- - -50/5080/5090
J
507
DIRECTIONAL CONTROLS
Pilot Operated Check Valves
E
Pilot Operated Check Valves
Mounting surface: ISO 5781-AJ-10-2-A
Model Numbers
B
Dimensions mm (Inches)
CDEFH JA
Mounting Surface
CPG/CPDG-03- - -50/5090
CPG/CPDG-06- - -50/5090
ISO 5781-AG-06-2-A
ISO 5781-AH-08-2-A
90
(3.54)
66.7
(2.63)
11.7
(.46)
150.5
(5.93)
42.9
(1.69)
66
(2.60)
62
(2.44)
30
(1.18)
102
(4.02)
79.4
(3.13)
11.3
(.44)
171.5
(6.75)
60.3
(2.37)
67.5
(2.66)
74
(2.91)
35
(1.38)
FREE
FREE
A
B
C
E
F
D
Drain Port
Pilot Port
11(.43) Dia. Through
17.5(.69) Dia. Spotface
4 Places
Free Flow Inlet or
Reversed Controlled
Flow Outlet Port
H
J
Free Flow Outlet or Reversed
Controlled Flow Inlet Port
Locating Pin
6(.24) Dia.
Mounting Surface
(O-Rings Furnished)
Locating Pin
6(.24) Dia.
Mounting Surface
(O-Rings Furnished)
Drain Port
Pilot Port
11(.43) Dia. Through
17.5(.69) Dia. Spotface
6 Places
Free Flow Inlet or
Reversed Controlled
Flow Outlet Port
Free Flow Outlet or Reversed
Controlled Flow Inlet Port
119
(4.69)
96.8
(3.81)
11.1
(.44)
42.1
(1.66)
84.1
(3.31)
203.5
(8.01)
70
(2.76)
89
(3.50)
40
(1.57)
6
(.24)
6
(.24)
CPG/CPDG-03- - -50/5090
CPG/CPDG-06- - -50/5090
DIMENSIONS IN
MILLIMETRES (INCHES)
CPG/CPDG-10- - -50/5090
508
Pilot Operated Check Valves
Hydraulic Fluid: Viscosity 30 mm
2
/s (141 SSU), Specific Gravity 0.850
Pressure Drop
CPT-03, CPDT-03 CPG-03, CPDG-03
0
20
10
30 40 50
L/min
0
0.8
PSI
100
175
MPa
Pressure Drop ΔP
50
0
0.4
1.2
150
0
510
U.S.GPM
15
Flow Rate
60
0
20
10
30 40 50
L/min
0
0.8
PSI
100
MPa
Pressure Drop ΔP
20
0
0.4
1.0
0
510
U.S.GPM
15
Flow Rate
60
40
60
80
120
140
CP T-03- -50
CP T-03- -35
CP T- 0 3 - - 2 0
CP T- 0 3 - - 0 4
CP G-03- -50
CP G-03- -35
CP G-03- -20
CP G-03- -04
Reversed
Controlled Flow
Reversed
Controlled Flow
CPT-06, CPDT-06 CPG-06, CPDG-06
CPT-10, CPDT-10
CPG-10, CPDG-10
0
50
25
75 150 175
L/min
0
0.8
PSI
100
200
MPa
Pressure Drop ΔP
50
0
0.4
1.2
150
0
10 40
U.S.GPM
50
Flow Rate
200100 125
20 30
1.6
225
0
50
25
75
150
175
L/min
0
0.8
PSI
100
200
MPa
Pressure Drop ΔP
50
0
0.4
1.2
150
0
10 40
U.S.GPM
50
Flow Rate
200100 125
20 30
1.
4
CP T- 0 6 - - 5 0
CP T- 0 6 - - 3 5
CP T- 0 6 - - 2 0
CP T- 0 6 - - 0 4
CP G-06- -50
CP G-06- -35
CP G-06- -20
CP G-06- -04
Reversed
Controlled Flow
Reversed
Controlled Flow
0
50 150
L/min
0
0.9
PSI
100
200
MPa
Pressure Drop ΔP
50
0
0.3
1.5
150
0
20 80
U.S.GPM
100
Flow Rate
200100
40 60
1.8
250
250 300 350 400
0.6
1.2
0
50 150
L/min
0
1.2
PSI
100
200
MPa
Pressure Drop ΔP
50
0
0.4
1.6
150
0
20 80
U.S.GPM
100
Flow Rate
200100
40 60
2.0
250
250 300 350 400
0.8
300
CP T- 1 0 - - 5 0
CP T-10- -35
CP T-10- -20
CP T-10- -04
CP G-10- -50
CP G-10- -35
CP G-10- -20
CP G-10--04
Reversed
Controlled Flow
Reversed
Controlled Flow
Min. Pilot Pressure Chart
P2 P2
P1
PP
P
1
PP
P
2
P1
PP
0
MPa
52025
0
4
200
600
Minimum Pilot Pressure (PP)
0
6
8
800
10
2
500
PSI
Supply Pressure (P2)
1500
1000
0
PSI MPa
12
1000
1200
1400
1600
1700
400
2000 2500 3000 3500
1510
Cracking Pressure
0.5 MPa (70 PSI)
0.04 MPa (6 PSI)
0.5 MPa (70 PSI)
Cracking Pressure
0.04 MPa (6 PSI)
A
A : Min. Pilot Pressure to open the Decompression Valve
Pressure Drop for Reversed Controlled Flow Only when Decompression Valve is Opened
CPDT-03, CPDG-03
CPDT-06, CPDG-06
CPDT-10, CPDG-10
0
10 20
L/min
30 40 50 60
0
2
Flow Rate
12
8
46
10
14 16 U.S.GPM
0
510
L/min
15 20 25
0
1
Flow Rate
5
4
2 3 6 U.S.GPM
0
10
PSI
1000
2000
Pressure Drop ΔP
0
5
15
20
3500
25
3000
MPa
0
10
PSI
1000
2000
Pressure Drop ΔP
0
5
15
20
3500
25
3000
MP
a
0
10
PSI
1000
2000
Pressure Drop ΔP
0
5
15
20
3500
25
3000
MPa
0
50 100
L/min
150 200
0
10
Flow Rate
50
40
20 30 U.S.GPM
509
DIRECTIONAL CONTROLS
Pilot Operated Check Valves
E
Pilot Operated Check Valves
■ List of Seals
5
1
2
1
4
3
2
7
6
8
9
1
3
1
0
1
6
1
7
1
1
1
5
2
0
1
9
2
1
1
8
2
2
2
3
2
4
2
1
1
4
1
9
1
11816
1
0
5
4
1
3
2
0
1
2
2
7
1
3
6
8
1
5
9
Name of PartsItem Qty.
CPT/CPDT-03
Part Numbers
11
12
13
O-Ring
O-Ring
O-Ring
1
1
1
CPT/CPDT-06 CPT/CPDT-10
SO-NB-P7
SO-NB-P21
SO-NB-G25
SO-NB-P9
SO-NB-P36
SO-NB-P42
SO-NB-P9
SO-NB-P29
SO-NB-P32
Name of PartsItem Qty.
CPG/CPDG-03
Part Numbers
11
12
13
14
15
O-Ring
O-Ring
O-Ring
O-Ring
O-Ring
1
2
2
1
1
CPG/CPDG-06 CPG/CPDG-10
SO-NB-P7
SO-NB-P9
SO-NB-P18
SO-NB-P21
SO-NB-G25
SO-NB-P9
SO-NB-P9
SO-NB-P32
SO-NB-P36
SO-NB-P42
SO-NB-P9
SO-NB-P9
SO-NB-P28
SO-NB-P29
SO-NB-P32
Model Numbers Seal Kit Numbers
KS-CPT-03-50
KS-CPT-06-50
KS-CPT-10-50
KS-CPG-03-50
KS-CPG-06-50
KS-CPG-10-50
CPT/CPDT-03-
- -50/5080/5090
CPT/CPDT-06- - -50/5080/5090
CPT/CPDT-10-
- -50/5080/5090
CPG/CPDG-03- - -50/5090
CPG/CPDG-06- - -50/5090
CPG/CPDG-10- - -50/5090
CPT/CPDT-03- - -50/5080/5090
CPT/CPDT-06-
- -50/5080/5090
CPT/CPDT-10-
- -50/5080/5090
CPG/CPDG-03- - -50/5090
CPG/CPDG-06- - -50/5090
CPG/CPDG-10- - -50/5090
List of Seals
Note: When ordering the seals, please specify the seal kit number from the table below.
Note: When ordering the O-Rings, please specify the seal kit number from the table below.
List of Seals
List of Seal Kits
CPDG-03/06/10
CPDT-03/06/10
