Перепускной клапан Hägglunds COCB 700, COCB 1000 Включает клапаны для сред ATEX Bosch Rexroth

Description Valid for: Hägglunds motor CA, CB, CBM Maximum flow 700 l/min, 1000 l/min Maximum pressure 350 bar Open and closed loop hydraulic system Features Compact and robust design Mounted directly on Hägglunds motors Oil exchange system for closed loop (COCB 1000-3) Protects the motor from high pressure peaks Provides cavitation protection Product description General The cross over valve COCB is designed for use with Hägglunds CA, CB and CBM motors and provides cross line relief and cavitation protection. The valve is suitable for open and closed hydraulic loop system and is normally mounted on the opposite side to the main flow. The pressure relief cartridge ensures protection of the motor from pressure shock. These relief valves have a standard setting of 350 bar but can be delivered with preset level 280 bar, 300 bar and 330 bar. Full flow anti-cavitation check valves protect the motor and also allow the application of external charge pressure. For use in closed loop application a oil exchange system is available. Oil exchange of the closed loop system during operation is achieved via the main cartridge and charge pressure relief valve in the oil exchange system. The charge pressure relief valve has a standard setting of 15 bar but is adjustable down to 3 bar. Two main valve configurations: COCB 700-1, COCB 1000-1 (Cross- over valve) COCB 1000-3 (Cross-over valve with oil exchange system) Info The pressure settings of the cross over valves are dependent of the back pressure, possible charge pressure in S-line. The charge pressure in S-line will be added to the pressure setting of the pilot valves means that the opening pressure will be additional higher than the main pressure relief settings. Function The cartridges within the cross-over valve are mounted in a manifold block and retained by screws on covers with all connections to create the valve function within the block. The main cartridges (610) and (620) are controlled by the pilot valves (611) and (621). If the pressure in either motor line, (Am) or (Cm) rises to the pilot valve setting the corresponding main cartridge (610) or (620) will open and flow will pass through the check valve (630) or (640) and into the other motor line thus relieving the over pressure. There is no flow through this valve except when relieving. When there is back pressure in the system it has to be added to the settings of the main relief valve setting. The pressure setting of the main relief cartridges should always be higher than the pump relief valve setting. On the basic valve COCB 700-1, 1000-1, an external charge pressure can be applied to port S. The charge pressure will appear in both motor lines through the anti-cavitation check valves (630) and (640). The pressure settings of the cross over valves are dependent of the back pressure, possible charge pressure in S-line. The charge pressure in S-line will be added to the pressure setting of the pilot valves means that the opening pressure will be add