DIRECTIONAL VALVES
CV42-M20 Check Valve
USASI: ISO:
PERFORMANCE (Cartridge Only)
SYMBOLS
4.016.1
6.9/100
5.2/75
3.4/50
1.7/25
75.8
20
151.4
40
227.1
60
FLOW lpm/gpm
PRESSURE DROP bar/psi
0.34 bar (5 psi) spring shown
32 cSt/150 ssu oil at 40°C
302.8
80
378.5
100
DESCRIPTION
A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding
device.
OPERATION
The CV42-M20 allows fl ow from ➀ to ➁, while blocking oil fl ow in the opposite
direction.
The cartridge has a fully guided poppet which is spring-biased to closed until
suffi cient pressure is applied at
➀ to open to ➁.
FEATURES
• Hardened seat for long life and low leakage.
• Optional bias springs for back-pressure application fl exibility.
• Conforms to ISO 7789 cavity.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: See Performance Chart
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. at 240 bar (3500 psi)
Crack Pressure Defi ned: Gauge pressure evident at
➀ at 0.95 lpm (0.25 gpm)
attained at
➁
Standard Bias Springs at Crack: 0.35 bar (5 psi); 1.7 bar (25 psi); 4.1 bar (60 psi)
Temperature: -40 to 120°C
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC42-M2 (ISO M42-2.0); See page 9.142.1
Cavity Tool: CT42-M2XX; See page 8.600.1
Seal Kit: SK42-M2X-T; See page 8.650.1
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Cartridge: Weight: 0.43 kg. (0.95 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Standard Ported Body: Weight:
1.63 kg. (3.60 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.042.1
Porting
Cartridge Only 0
SAE 20 20T
Seals
N Buna N (Std.)
V Fluorocarbon
Bias Spring (Crack)
5 0.35 bar (5 psi)
15 1.0 bar (15 psi)
30 2.1 bar (30 psi)
60 4.1 bar (60 psi)
CV42-M20
DIMENSIONS
MATERIALS
TO ORDER
CV42-M20
-__ __ __ - __ - __ __
4.016.2
®
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