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 D3B125
CV30
Technical Information
Specifications
Dimensions
Millimeters (Inches)
Rated Flow 150 LPM (40 GPM)
Nominal Flow @ 80 LPM (21 GPM)
7 Bar (100 PSI) (Piloted Open)
Maximum Inlet 420 Bar (6000 PSI)
Pressure
Leakage at Less than 3 drops/min.
150 SSU (32 cSt)
Cracking Pressure 2 Bar (30 PSI)
Pilot Ratio 4:1
Cartridge Material Steel operating parts,
hardened steel poppet.
Operating Temp. -40°C to +93.3°C (Nitrile, Buna-N)
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 .24 kg (.528 lbs.)
Cavity 3C
(See BC Section for more details)
Ordering Information
Performance Curve
Pressure Drop vs. Flow (Through cartridge only)
General Description
Pilot to Open, Poppet Type Check Valve. For additional
information see Technical Tips on pages CV1-CV4.
Features
•
Hardened poppet for maximum durability
•
High flow capacity
•
Low leakage - less than 3 drops/min.
•
Sealed pilot
•
Good contamination tolerance
•
Cavity commonality with load control valves
•
Dual line blocks available
•
All external parts zinc plated
Code Porting
039 3/4″ BSP (Main)
1/4″ BSP (Aux.)
069 1″ SAE (Main)
1/4″ SAE (Aux.)
034 3/4″ BSP Dual Cavity
234 3/4″ SAE Dual Cavity
Code Seals / Kit No.
N Nitrile, Buna-N /
(SK30008N-1)
V Fluorocarbon /
(SK30008V-1)
D3B125
Check
Valve
Seals
Body
Material
Porting
Code Body Material
A Aluminum
S Steel
Line Body
LB10
Order Bodies Separately
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
Flow (Q)
40
10.6
80
21.1
LPM
GPM
0
120
31.7
160
42.3
0
73
290 20
15
10
5
218
PSI Bar
145
Pressure Drop ( P)
Free Flow
2 to 1
Piloted Open
1 to 2
(1)
(2)
(3)
(1)
(2)
(3)
8.00
(0.31)
65.00
(2.56)
35 AF Hex.
85 Nm
(63 lb. ft.)
Torque
1-3/16" - 12 UNF
(1)
(2)
(3)
