Relief Valves

Relief Valves Catalog Quick Reference Thermal Relief Flow 1.1 l/min [0.3 US gal/min] Flow 30 l/min [8 US gal/min] 40 l/min [11 US gal/min] Description Relief Valve, Direct Acting, Poppet Type Description Relief Valve, Direct Acting, Dampening, Poppet Type Flow 30 l/min [8 US gal/min] 40 l/min [11 US gal/min] 40 l/min [11 US gal/min] 50 l/min [13 US gal/min] 80 l/min [21 US gal/min] Flow 40 l/min [11 US gal/min] 40 l/min [11 US gal/min] 75 l/min [20 US gal/min] 150 l/min [40 US gal/min] Direct Acting RV - Relief Valves Catalog Quick Reference Description Relief Valve, Thermal Relief, Poppet Type...

Relief Valves Catalog Quick Reference Pilot Operated Pilot Operated Description Relief Valve, Direct Acting, Spool Type, Flow 45 l/min [12 US gal/min] 75 l/min [20 US gal/min] Description Relief Valve, Pilot Operated, Spool Type Flow 115 l/min [30 US gal/min] 190 l/min [50 US gal/min] Description Relief Valve, Pilot Operated, Poppet Type, with Free Reverse Flow Flow 120 l/min [32 US gal/min] Description Relief Valve, Bi-directional Flow 40 l/min [11 US gal/min] RV - Relief Valves Catalog Quick Reference Direct Acting

Relief Valves Catalog Quick Reference Differential Area RV - Relief Valves Catalog Quick Reference Cavity none Differential Area Description Relief Valve, Differential Area, Poppet Type with Reverse Free Flow Check Flow 80 l/min [21 US gal/ min] 140 l/min [37 US gal/ min] Description Relief Valve, Differential Area, Poppet Type with Reverse Free Flow Check, Atmospheric Venting Flow 80 l/min [21 US gal/ min] 140 l/min [37 US gal/ min] Description Relief Valve, Cross-Over, Catalog HIC Flow 40 l/min [11 US gal/ min] 75 l/min [20 US gal/ min] 190 l/min [50 US gal/ min]

Relief Valves Catalog Application Notes Relief valves are used as pressure limiting devices to protect hydraulic systems and components. They are available in direct-acting poppet, differential area poppet, bi-directional poppet, and pilot-operated spool types. Direct-acting poppet Direct acting poppet relief valve The direct-acting poppet blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the spring-opposed 1 poppet from it’s seat. This pressure is 2 commonly known as the crack pressure. The valve will remain open until the pressure drops to a level allowing the spring...

Relief Valves Catalog Application Notes OPERATION (continued) Because of these features some common applications for direct-acting and differential area poppet relief valves are: · · Main system relief valve if flow is relatively constant, or as a safety relief valve for “spike clipping” to protect components from overpressure Work port cross-over relief to protect a cylinder or motor from overpressure System Relief Valve Work Port Cross-Relief Valves RV - Relief Valves Catalog Applications Notes Bi-directional poppet The bi-directional poppet is a dual cross-over relief in a single cartridge....

Relief Valves Catalog Thermal Relief CP208-4 OPERATION This is a direct-acting poppet type thermal relief valve that relieves from 1 to 2. Rated pressure Rated flow Leakage Weight Cavity 415 bar [6000 psi] 1.1 l/min [0.3 US gal/min] 10 drops/min @ 80% of pressure setting 0.23 kg [0.50 lb] SDC08-2 Cross-sectional view ORDERING INFORMATION CP208-4-B-4S-E-C-300 Seals B = Buna-N V = Viton Housing and ports Housing P/N 0 = No Housing No Housing DG2B = Al, 1/4 BSP SDC08-2-DG-2B DG3B = Al, 3/8 BSP SDC08-2-DG-3B 4S = Al, #4 SAE CP08-2-4S 6S = Al, #6 SAE CP08-2-6S Other housings available Crack pressure...

Relief Valves Catalog Direct Acting CP208-3 OPERATION This is a direct-acting poppet type relief valve that relieves from 1 to 2. Rated pressure Rated flow RV - Relief Valves Catalog CP208-3 Weight Cavity 250 bar [3600 psi] 30 l/min [8 US gal/min] 10 drops/min @ 80% of pressure setting 0.15 kg [0.32 lb] SDC08-2 Cross-sectional view ORDERING INFORMATION CP208 - 3 - B - 6S - A - C - 150 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing DG2B = Al, 1/4 BSP DG3B = Al, 3/8 BSP 4S = Al, #4 SAE 6S = Al, #6 SAE Other housings available Adjustment option A = Internal E = External F = Tamper resistant...

Relief Valves Catalog Direct Acting CP200-3 OPERATION This is a direct-acting poppet type relief valve that relieves from 1 to 2. Theoretical performance Rated pressure Rated flow Leakage Weight Cavity 250 bar [3600 psi] 40 l/min [11 US gal/min] 10 drops/min @ 80% of pressure setting 0.21 kg [0.47 lb] SDC10-2 Cross-sectional view 7/8-14 UNF Type A adjustment Type F adjustment RV - Relief Valves Catalog CP200-3 Type E adjustment Type K adjustment ORDERING INFORMATION CP200 - 3 - B - 6S - A - C - 150 Seals B = Buna-N V = Viton Housing and ports 0 = No Housing DG3B = Al, 3/8 BSP DG4B = Al, ½ BSP...

Relief Valves Catalog Direct Acting RV08-DR OPERATION This is a direct-acting, poppet-type relief valve that relieves from 1 to 2. It features a highly damped poppet for smooth and stable response. Rated pressure Rated flow Leakage RV - Relief Valves Catalog RV08-DR Weight Cavity 250 bar [3600 psi] 30 l/min [8 US gal/min] 10 drops/min @ 80% of pressure setting 0.10 kg [0.22 lb] SDC08-2 Cross-sectional view ORDERING INFORMATION RV08-DR-1-E-XXX-B-4S Pressure range 1 = 20-80 Bar [290-1150 psi] 2 = 35-160 Bar [500-2300 psi] 3 = 60-250 Bar [870-3600 psi] Adjustment option E = External F = Tamper resistant...

Relief Valves Catalog Direct Acting VEN 06 OPERATION This is a direct-acting, poppet-type relief valve that relieves from 1 to 2. It features a highly damped poppet for smooth and stable response. Minimum setting value 0 0 Rated pressure Rated flow Weight Cavity RV - Relief Valves Catalog VEN 06 Cross-sectional view 27 mm 44-50 N•m [32-37 lbf•ft] ORDERING INFORMATION VEN 06 - M - 1 - DG3/8 - V - XXX Type of adjustment EN = External screw M = Handwheel Seals V = Viton seals Omit = Buna-N Housing and ports Housing P/N 0 = No Housing No Housing DG3/8 = AL, 3/8 BSP NCS06/2-DG-3/8 DG1/2 = AL, 1/2...

g~nwnsm1-r<mt Relief Valves Catalog €-€J?fllCT" Direct Acting RESPO IUSIVEXESS IK MOTION Member of the Danfoa Group This is a direct-acting, poppet-type relief valve that relieves from 1 to 2. It features a highly damped poppet for smooth and stable response. Theoretical performance Pressure drop Cross-sectional view MG = Handwheel (panel mounted) Setting range - Other housings available To order this valve with a specific factory setting, contact your Comatrol representative