Hydraulics
LH4
Catalog 3105/USA
cv081p.pm6.5, bl, lk
Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio 44035 USA
Check Valves
Series CV081P and CV091P
Technical Information
Performance Curve
Flow vs. Pressure Drop
(Through cartridge only)
Specifications
Maximum Flow 37.5 LPM (10 GPM)
Maximum 210 Bar (3000 PSI)
Inlet Pressure
Leakage 5 drops/min. (1/3 cc/min.)
at 210 Bar (3000 PSI)
Operating Temp. -40°C to +93.3°C (Nitrile)
Range (Ambient) (-40°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Cartridge Material All parts steel. All operating
parts hardened steel.
Body Material Steel or Aluminum
Filtration ISO code 16/13,
SAE Class 4 or better
Mounting No Restrictions
Cavity CV081P Common Cavity No. C08-2
CV091P Common Cavity No. C09-2
General Description
The CV081P and CV091P Series, Poppet-Type,
Check Valves allow free flow in one direction while
preventing flow in the reverse direction. They can be
used to isolate portions of a hydraulic circuit or to
provide a free flow path around a restrictive valve.
Operation
Pressure on the inlet of the check creates a force
against the poppet, pushing it off its seat and permit-
ting free flow. Reverse flow through the check is
blocked by the poppet.
Features
•
Hardened, precision ground parts for durability
•
Compact size for reduced space requirements
•
Low leakage design
•
Fully guided poppet for smooth operation
Out
(2)
In
(1)
Free Flow
Outlet (2)
Inlet
(1)
Hydraulic Oil 135 SSU @ 100°F (28 cSt)
0
20
100 6.9
5.5
2.8
4.1
1.4
Pressure Drop ( P)∆
80
PSI Bar
40
60
Flow (Q)
22.7
6
7.6
2
15.1
4
LPM
GPM
0
30.3
8
37.9
10
Hydraulics
LH5
Check Valves
Series CV081P and CV091P
Catalog 3105/USA
cv081p.pm6.5, bl, lk
Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio 44035 USA
*Inch equivalents for millimeter dimensions are shown in (**)
Dimensions
THIRD-ANGLE
PROJECTION
Out
(2)
In
(1)
25.4
(1.00)
12.7
(.50)
12.7
(.50)
0.8
(.03)
Max.
44.4
(1.75)
7.1
(.28)
Typ.
27.4
(1.08)
38.1
(1.50)
44.4
(1.75)
1
2
3.2
(.12)
31.8
(1.25)
Cartridge Only
Cartridge In Body
12.3
(.49)
40.0
(1.58)
27.7
(1.09)
22.2 (.88) Hex.
20 N.m.
(180 In.-Lbs.)
Torque
3/4
16UNF-2A
Thread
CV081P
Ø 12.7 (.49)
CV091P
Ø 15.8 (.62)
Hydraulics
LH6
Catalog 3105/USA
cv081p.pm6.5, bl, lk
Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio 44035 USA
Check Valves
Series CV081P and CV091P
Ordering Information
BodyBody
BodyBody
Body
OptionOption
OptionOption
Option
1P
StyleStyle
StyleStyle
Style
SizeSize
SizeSize
Size
CV
CheckCheck
CheckCheck
Check
ValveValve
ValveValve
Valve
Code Style
1P Guided Poppet
Code Port Size & Material
Omit Cartridge Only
4P 1/4″ NPTF (B**-2-4P) Steel
A4P 1/4″ NPTF (B**-2-A4P) Aluminum
6P 3/8″ NPTF (B**-2-6P) Steel
A6P 3/8″ NPTF (B**-2-A6P) Aluminum
4T SAE-4 (B**-2-4T) Steel
A4T SAE-4 (B**-2-A4T) Aluminum
6T SAE-6 (B**-2-6T) Steel
A6T SAE-6 (B**-2-A6T) Aluminum
4B 1/4″ BSPG (B**-2-4B) Steel
A4B 1/4″ BSPG (B**-2-A4B) Aluminum
6B 3/8″ BSPG (B**-2-6B) Steel
A6B 3/8″ BSPG (B**-2-A6B) Aluminum
Code Type
Omit 0.3 Bar (5 PSI)
10 0.7 Bar (10 PSI)
30 2.1 Bar (30 PSI)
65 4.5 Bar (65 PSI)
100 6.9 Bar (100 PSI)
175 12.1 Bar (175 PSI)
CrackingCracking
CrackingCracking
Cracking
PressurePressure
PressurePressure
Pressure
SealsSeals
SealsSeals
Seals
Code Type
Omit Nitrile
V Fluorocarbon
Code Type
08 3/4″ - 16UNF-2B Threaded
Cavity with .500″ Dia. Seat
09 3/4″ - 16UNF-2B Threaded
Cavity with .625″ Dia. Seat
** Specify size 08 or 09.
SERVICE PARTS
Nitrile Seal Kit:
CV081P — SK08-2
CV091P — SK09-2
Fluorocarbon Seal Kit:
CV081P — SK08-2V
CV091P — SK09-2V
Shipping Weight
Cartridge Only .06 kg (.13 lbs.)
Cartridge in Body .17 kg (.38 lbs.)
