Catalog HY15-3501/US
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Proportional
Valves
Coils &
Electronics
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Bodies &
Cavities
Solenoid
Valves
Pilot Operated Check Valve
Series CPH124P
CV20
Technical Information
Specifications
Dimensions
Millimeters (Inches)
Rated Flow 75 LPM (20 GPM)
Maximum Inlet 350 Bar (5000 PSI)
Pressure
Leakage at 5 drops/min. (.33 cc/min.)
150 SSU (32 cSt) at 350 Bar (5000 PSI)
Pilot Ratio 3:1
Cartridge Material All parts steel. All operating parts
hardened steel.
Operating Temp. -40°C to +93.3°C (Nitrile)
Range/Seals (-40°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Fluid Mineral-based or synthetic with
Compatibility/ lubricating properties at viscosities
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Filtration ISO code 16/13,
SAE Class 4 or better
Approx. Weight 0.2 kg (.44 lbs.)
Cavity C12-3
(See BC Section for more details)
Form Tool Rougher NFT12-3R
Finisher NFT12-3F
Ordering Information
Performance Curve
Pressure Drop vs. Flow (Through cartridge only)
General Description
Cartridge Style Pilot Operated Check Valve. For
additional information see Technical Tips on pages
CV1-CV4.
Features
•
Hardened, precision ground parts for durability
•
Internal pilot position simplifies manifold design
•
All external parts have yellow zinc dichromate. This
coating is ideal for salt spray applications.
* Add “A” for aluminum, omit for steel.
† Steel body only.
Code Port Size Body Part No.
Omit Cartridge Only
8T SAE-8 (B12-3-*8T)
12T SAE-12 (B12-3-*12T)
8B 1/2″ BSPG (B12-3-8B)†
Code Seals / Kit No.
Omit Nitrile /
(SK12-3)
V Fluorocarbon /
(SK12-3V)
Code Cracking Pressure
Omit 1.7 Bar (25 PSI)
CPH124P
12 Size
P.O. Check Valve
Cracking
Pressure
Seals Port
Size
Body
Material
Code Body Material
Omit Steel
A Aluminum
(2)
(1)
(3)
(3)
(2)
(1)
8.9
(.35)
58.9
(2.32)
Ø 22.2
(.87)
1-1/4" Hex.
76 Nm
(56 lb. ft.)
Torque
1 1/16-12 UNF-2A
Thread
Pilot (1)
Valve
Inlet (2)
Cylinder
Outlet (3)
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
Flow (Q)
38
10
19
5
LPM
GPM
0
57
15
76
20
0
20
100 6.9
5.5
2.8
4.1
1.4
80
PSI Bar
40
60
Pressure Drop ( P)
