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
Solenoid
Valves
Proportional
Valves
Coils &
Electronics
Bodies &
Cavities
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Pilot Operated Check Valve
Series D2K1
CV29
Technical Information
Specifications
Dimensions
Millimeters (Inches)
Rated Flow 70 LPM (18.5 GPM)
Nominal Flow @ 45 LPM (11.9 GPM)
7 Bar (100 PSI) (Piloted Open)
Maximum Inlet 350 Bar (5000 PSI)
Pressure
Leakage at Less than 3 drops/min.
150 SSU (32 cSt)
Pilot Ratio 3:1
Cartridge Material All parts steel. All operating parts
hardened steel.
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 .14 kg (.31 lbs.)
Cavity CAVT11A
(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, (optional)
•
Good contamination tolerance
•
Cavity commonality with load control valves
•
Dual line blocks available
•
All external parts zinc plated
Code Porting
826 1/2″ BSP (Main)
1/4″ BSP (Aux.)
825 1/2″ SAE (Main)
1/4″ SAE (Aux.)
828 1/2″ BSP Dual Cavity
827 1/2″ SAE Dual Cavity
Code Seals / Kit No.
N Nitrile, Buna-N /
(SK30700N-1)
V Fluorocarbon /
(SK30700V-1)
D2K1
Check
Valve
Cracking
Pressure
Body
Material
Porting
Code Body Material
A Aluminum
S Steel
Line Body
LB10
Order Bodies Separately
Seals Sealed
Pilot
Code Sealed Pilot
S Sealed Pilot
(Omit if not required)
Code Cracking Pressure
0.3 0.3 Bar (4 PSI)
2.1 2.1 Bar (30 PSI) Std.
5.2 5.2 Bar (75 PSI)
(1)
(2)
(3)
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
Flow (Q)
10
2.6
20
5.3
30
7.9
40
10.6
LPM
GPM
0
50
13.2
60
15.9
70
18.5
0
73
290 20
15
10
5
218
PSI Bar
145
Pressure Drop ( P)
Piloted Open
1 to 2
Free Flow
2 to 1
30.00
(1.18)
34.6
(1.36)
22 AF Hex
M20 x 1.5 6g
Locating
Shoulder
(1)
(2)
(3)
(1)
(2)
(3)
