CV08-20 Check, Hydraulic Cartridge Valve

Directional Valves

CV08-20 — Check Valve

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CV08-20 Valve

SYMBOL:
CV08-20 Valve symbol

DESCRIPTION
A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding device.

OPERATION
The CV08-20 allows 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.
• Compact size.
• Fast closing and seating.

RATINGS
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: Up to 30 lpm (8 gpm)
Internal Leakage: 0.10 cc/minute (2 drops/minute) max. at 240 bar (3500 psi)
Crack Pressure Defined: Gauge psi evident at 1 at 16.4 cc/minute (1 cu. in./minute) attained
Standard Bias Springs at Crack: 0.3 bar (4 psi); 0.7 bar (10 psi); 1.7 bar (25 psi); 4.1 bar (60 psi)
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon seals;
   -54 to 107°C (-56 to 225°F) with polyurethane or urethane seals
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; See page 9.020.1
Cavity: VC08-2; See page 9.108.1_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2x-T; See page 8.650.1

PERFORMANCE:

CV08-20 Valve Performance Chart

DIMENSIONS: CV08-20 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.08 kg (0.17 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and back-ups standard.

Standard Ported Body:
Weight: 0.16 kg (0.35 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.
See page 8.008.1_2w.

ORDERING CHART:

CV08-20 Ordering Chart