02 - CV - Check Valves
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Member of the Danfoss Group Check Valves

Check Valves Catalog Quick Reference CV - Check Valves Catalog Quick Reference Cartridge 1 Description Check Valve, Ball Type, Normal Direction Description Check Valve, Poppet Type, Normal Direction Description Check Valve, Reverse Direction, No Spring Flow* 3 l/min 0.8 US gal/min 30 l/min 8 US gal/min 83 l/min 22 US gal/min Flow* 30 l/min 8 US gal/min 85 l/min 22 US gal/min 115 l/min 30 US gal/min 210 l/min 55 US gal/min 380 l/min 100 US gal/min Flow* 3 l/min 0.8 US gal/min * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison...

Check Valves Catalog Quick Reference Cavity none Description Check Valve, Reverse Direction Description Check Valve, Slip-in Description Check Valve, In-line, Female Port Flow* 20 l/min 5 US gal/min 50 l/min 13 US gal/min 75 l/min 20 US gal/min 150 l/min 40 US gal/min 265 l/min 70 US gal/min Flow* 70 l/min 19 US gal/min 70 l/min 19 US gal/min 190 l/min 50 US gal/min 190 l/min 50 US gal/min Flow* 20 l/min 5 US gal/min 30 l/min 8 US gal/min 35 l/min 9 US gal/min 60 l/min 16 US gal/min 70 l/min 19 US gal/min 95 l/min 25 US gal/min 100 l/min 26 US gal/min 140 l/min 37 US gal/min 150 l/min 40 US...

Check Valves Catalog Quick Reference none none Cavity none Cavity none Description Check Valve, In-line, Male Port Description Check Valve, In-line, Female Port, with Orifice Flow* 20 l/min 5 US gal/min 35 l/min 9 US gal/min 150 l/min 40 US gal/min Flow* 20 l/min 5 US gal/min CV - Check Valves Catalog Quick Reference * Flow ratings are based on a pressure drop of 7 bar [100 psi] unless otherwise noted. They are for comparison purposes only.

Check Valves Catalog Application Notes BASIC OPERATION Check valves allow free flow in one direction and block flow in the opposite direction. CV - Check Valves Catalog Application Notes Check valves STANDARD CHECK VALVES REVERSE FLOW CHECK VALVES Standard check valves, suitable for most applications, have fully guided poppets which always block flow from 2 to 1. They are spring biased closed until sufficient pressure is applied at 1 to open flow to 2. This pressure is commonly called the crack pressure. Several crack pressures are available for each model. Consult check valves section for...

Check Valves Catalog Application Notes SLIP-IN CHECK VALVES Slip-in style check valves are cartridges that drop into small cavities and are retained by SAE plugs or by other cartridge valves. They are ideal for use in manifolds where space savings is critical. Versions of these valves with Delrin® seats are also available for applications requiring extremely low leakage. Slip-in check valve INLINE CHECK VALVES Also available are in-line check valves, which can be used to simplify machine plumbing. Inline check valve Check valves have many common CV - Check Valves Catalog Application Notes...

Check Valves Catalog Ball Type, Normal Direction CV04-NB OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Theoretical performance Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 207 bar [3000 psi] 3 l/min [0.8 US gal/min] 6 drops/min @ Rated pressure 0.01 kg [0.022 lb] CP04-2 Cross-sectional view CV - Check Valves Catalog ORDERING INFORMATION Housing and ports 00 = No Housing 4S = Al, #4 SAE 2B = Al, 1/4 BSP Seals B = Buna-N V = Viton Housing Part # No Housing CP04-2-4S CP04-2-2B Pressure drop

Check Valves Catalog Ball Type, Normal Direction CV08-NB OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Specifications Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 310 bar [4500 psi] 30 l/min [8 US gal/min] 6 drops/min @ Rated pressure 0.05 kg [0.11 lb] SDC08-2 Cross-sectional view ORDERING INFORMATION Housing and ports 00 = No Housing DG-2B = Al, 1/4 BSP DG-3B = Al, 3/8 BSP 4S = Al, #4 SAE 6S = Al, #6 SAE Seals B = Buna-N V = Viton Housing Part # No Housing SDC08-2-DG-2B SDC08-2-DG-3B CP08-2-4S CP08-2-6S CV - Check Valves Catalog...

Co#71 cltr^l check Valves Cata|°g Ball Type, Normal Direction Member of the Confess Group This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Theoretical performance Pressure drop Cross-sectional view Crack Pressure- Housing Part #

Check Valves Catalog Poppet Type, Normal Direction CV08-NP OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Specifications Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 310 bar [4500 psi] 30 l/min [8 US gal/min] 6 drops/min @ Rated pressure 0.05 kg [0.11 lb] SDC08-2 Cross-sectional view CV - Check Valves Catalog CV08-NP Pressure drop ORDERING INFORMATION Housing and ports 00 = No Housing DG2B = Al, 1/4 BSP DG3B = Al, 3/8 BSP 4S = Al, #4 SAE 6S = Al, #6 SAE Other housings available Seals Seal kit B = Buna N 120221 V = Viton 120222 CV - 10

Check Valves Catalog Poppet Type, Normal Direction CV10-NP OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 300 bar [4350 psi] 85 l/min [22 US gal/min] 6 drops/min @ Rated pressure 0.08 kg [0.18 lb] SDC10-2 CV - Check Valves Catalog Cross-sectional view ORDERING INFORMATION Body & Ports 00 = Cartridge only 6S = Aluminum, #6 SAE 8S = Aluminum, #8 SAE 3B = Aluminum, 3/8 BSP 4B = Aluminum, 1/2 BSP Seals B = Buna-n V = Viton Pressure drop

Check Valves Catalog Poppet Type, Normal Direction CP100-3 OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 350 bar [5075 psi] 115 l/min [30 US gal/min] 6 drops/min @ 207 bar [3000 psi] 0.08 kg [0.17 lb] SDC10-2 Cross-sectional view CV - Check Valves Catalog ORDERING INFORMATION CP100-3-B-8S-005 Housing and ports 0 = No Housing DG3B = Al, 3/8 BSP DG4B = Al, 1/2 BSP 6S = Al, #6 SAE 8S = Al, #8 SAE Other housings available Seals B = Buna-N V = Viton

Check Valves Catalog Poppet Type, Normal Direction CP102-1 OPERATION This valve allows free flow from 1 to 2 and blocks flow from 2 to 1. Rated pressure Rated flow at 7 bar [100 psi] Leakage Weight Cavity 210 bar [3045 psi] 210 l/min [55 US gal/min] 6 drops/min @ Rated pressure 0.26 kg [0.57 lb] SDC16-2 CV - Check Valves Catalog Cross-sectional view ORDERING INFORMATION CP102-1-B-16S-005 Housing and ports 0 = No Housing DG6B = Al, 3/4 BSP DG8B = Al, 1 BSP 12S = Al, #12 SAE 16S = Al, #16 SAE Other housings available Seals B = Buna-N V = Viton Pressure drop