DIRECTIONAL VALVES
CV04-20 & CV04-B20 Check Valves
DESCRIPTION
A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding
device. Available in conventional surface mount or convenient “down-hole” versions.
OPERATION
The CV04-20 and CV04-B20 allow flow passage from 1 to 2, while normally blocking
oil flow in the opposite direction.
The cartridge has a fully guided check which is spring-biased closed until sufficient
pressure is applied at 1 to open to 2.
FEATURES
• Hardened seat for long life and low leakage.
• Optional bias springs for back-pressure application flexibility.
• Fully guided check assembly.
• Miniature size.
• Fast closing and seating.
RATINGS
Operating Pressure: 241.3 bar (3500 psi)
Flow: See Performance Chart
Internal Leakage: 0.10 cc/minute (2 drops/minute) max. at 206.8 bar (3000 psi)
Crack Pressure Defined: Gauge psi evident at 1 at 16.4 cc/minute (1 cu. in./minute)
attained
Standard Bias Springs at Crack: 0.34 bar (5 psi)
Temperature: -40° to 120°C (-40° - 248°F)
Filtration: Recommend 25μ nominal or better; 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
Cavity: VC04-2 or VC04-B2; See page 9.104.1
Cavity Tool: CT04-2xx or CT-B3xx; See page 8.600.1
Seal Kit: For CV04-20: SK04-2X-T; For CV04-B20: SK04-B2X-T
ISO SYMBOL
4.005.1
PERFORMANCE (Cartridge Only)
1
2
1.9
.5
FLOW lpm/gpm
PRESSURE DROP bar/psi
Port 1 to Port 2
(with 0.3 bar/4 psi spring)
32 cSt/150 sus oil at 40°C
5.7
1.5
3.8
1
27.6/400
20.7/300
13.8/200
6.9/100
1
2
1
2
HYDRAFORCE
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®
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CV04-__20 - __ __ __ - __ - __ __
Cartridge: Weight: 0.05 kg. (0.12 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and back-up
standard.
MATERIALS
TO ORDER
DIMENSIONS
4.005.2
CV04-20 & CV04-B20
Seals
N Buna N (Std.)
V Fluorocarbon
Bias Spring
5 0.3 bar (5 psi)
Porting
0 Cartridge Only
Mounting
Blank Surface Mount
B Down-Hole Mount
0.563
14.30
Ø
0.188
HEX SOCKET
TORQUE –
12 to 14 ft-lbs
(16 to 19 Nm)
Max.
7/16–20UNF–2A THREAD
7/16–20UNF–2A THREAD
4.77
0.188
4.77
0.09
2.3
0.94
23.9
0.95
24.1
INCH
PORT
PORT
MILLIMETRE
2
1
PORT
PORT
2
1
CV04-20 CV04-B20
HEX SOCKET
TORQUE –
4 to 5 ft-lbs
(5.4 to 6.7 Nm)
Max.
CV04-20
CV04-B20
®
HYDRAFORCE
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®
Blue rectangles are links to other catalog pages.
