HAWE Harvey check valve product introduction

HAWE Harvey RK/RB, RC, RE, ER type check valve

HAWE Harvey RK/RB, RC, RE, ER type check valves are classified as shut-off valves. They enable the oil circuit to open in one direction and close in the opposite direction. The RK/RB type check valve is a spring-loaded, solid-structured ball-type globe valve that is insensitive to dirt. The RC type check valve is a two-threaded, spring-loaded disc type check valve. It not only cuts off oil flow from one direction, but also acts as an oil suction valve installed in the pump suction pipe. The mounting holes for all threaded cartridge check valves can be machined with a conventional twist drill (acute angle 118 degrees). The ER type threaded cartridge type check valve is a spring loaded ball type globe valve, which is mainly used for the stop valve plate type superposition combination. Maximum pressure Pmax = 400 to 700 bar Maximum flow rate Qmax = 6 to 120 l/min.

HAWE Harvey CRK and CRB type check valves

HAWE Harvey CRK and CRB type check valves are a type of shut-off valve that allows oil to circulate in one direction and close in the opposite direction. The CRK type check valve (forward cutoff) is a spring loaded shutoff valve, while the CRB type check valve (reverse cutoff) is a disc cut-off valve. They can be easily screwed into the threaded holes of a conventional twist drill (an acute angle of 118 degrees). The mounting holes can be closed with a common screw plug as needed. Maximum pressure Pmax = 500 bar Maximum flow rate Qmax = 30 to 80 l/min.
 

HAWE Harvey B series check valve
HAWE Harvey B series check valves are classified as shut-off valves. There are three valve body designs that can accommodate different pipe connections. Since the valve has a low opening pressure, it can also be used as a suction valve for an oil suction pipe. Maximum pressure Pmax = 500 bar Maximum flow rate Qmax = 15 to 160 l/min.
 

HAWE Harvey CRH and RHC series spiral hydraulic control check valve

HAWE Harvey CRH and RHC series spiral hydraulic control check valves are classified as shut-off valves. This valve is used to close the oil passage of the hydraulic actuator when the spool type reversing valve leaks, or as a pilot operated drain valve or unloading valve. The RHC type valve with and without preloading (for high pressure and high flow) is a screw type cartridge valve. The mounting holes (and the sealing faces) can be machined with a conventional twist drill (an acute angle of 118 degrees). Various derivative products have further expanded the scope of application. The CRH type check valve is a screw type cartridge valve with a particularly simple mounting hole. Maximum pressure Pmax = 400 to 500 bar Maximum flow rate Qmax = 8 to 200 l/min.
 

HAWE Harvey HRP series hydraulic control check valve

HAWE Harvey HRP series hydraulic control check valves are classified as cut-off valves and are available in 6 sizes. And they are all plate connections. This valve is used to close the oil passage of the hydraulic actuator when the spool type reversing valve leaks. Or use as a hydraulically operated drain or unloading valve. In order to relieve the unloading shock during high pressure and large flow, the HRP valve can be equipped with a pre-unloading structure. The back of the control slide is unloaded through the leak port, and the pressure of the return port "B" has no effect on the function of the valve. Alternatively, the shut-off valve can be arbitrarily controlled by means of a plate solenoid valve by means of the load pressure of the actuator. Maximum pressure Pmax = 500 to 700 bar Maximum flow rate Qmax = 20 to 400 l/min.

HAWE Harvey RH and DRH series hydraulic control check valves

The HAWE Harvey RH and DRH series of pilot operated check valves are classified as shut-off valves for shutting off the flow of one or two oil passages of a hydraulically actuated actuator. The valve can also be used as a hydraulically controlled unloading valve. The RH and DRH pilot operated check valves are preloaded with one port or two ports to relieve the unloading shock of the actuator at high pressure or large flow. The DRH pilot operated check valve not only has a tubular connection and a plate connection, but can also be used in combination with a damping and pressure limiting valve. Therefore, such a hydraulically controlled check valve has wide applicability. Maximum pressure Pmax = 400 to 700 bar Maximum flow rate Qmax = 15 to 160 l/min.

HAWE Harvey F series check valve and filling valve

HAWE Harvey F series check valves or liquid filling valves are all type of shut-off valves and are spring-loaded disc-type cut-off structures. The F-type check valve is a valve that reverses the flow and circulates in one direction. A typical use example of the F-type filling valve (hydraulic one-way) is in the forging machine in the form of the upper piston structure, which enables the cylinder of the press to quickly fill and drain the oil. The small size valve can be selected as a pre-unloading device, which can play a pre-unloading action at high pressure and large flow, and avoid unloading shock. Maximum pressure Pmax = 400 bar Maximum flow rate Qmax = 100 to 7000 l/min.

HAWE Harvey LB series pipeline explosion-proof safety valve
HAWE Harvey LB series pipeline explosion-proof safety valve is a type of shut-off valve, which can provide two kinds of screw-in valve and pipe-connected valve. The pipeline explosion-proof valve, which is usually mounted directly on the actuator (cylinder), acts to cut off the oil passage of the actuator when the pipe is broken. This means that when the pilot back pressure is removed, the valve prevents the load from dropping. A flow rate above a set value causes the spring force to lift the sheet from the valve seat and press the sheet against the valve seat by the force of the flowing medium, thereby closing the valve. There are two forms of such pipeline explosion-proof safety valves, one is the full damping balance of the load, and the other is the throttle orifice damping load limiting speed drop, which can meet various use requirements. Maximum pressure Pmax = 500 bar Maximum flow rate Qmax = 4 to 160 l/min.

HAWE Harvey WV and WVC series shuttle valves
HAWE Harvey WV and WVC series shuttle valves are a type of shut-off valve. Two oil inlets controlled by the same steel ball are connected to one oil drain. As the pressure increases, the inlet can automatically communicate with the outlet. The shuttle valve integrated in the T-connector is a tubular shuttle valve, and the WVC shuttle valve is a threaded cartridge shuttle valve. Maximum pressure Pmax = 315 bar Maximum flow rate Qmax = 6 to 150 l/min.