HAWE solenoid valve from Germany

HAWE solenoid valve from GermanyCR4M-WG230

Usually used in hydraulic systems with hydraulic oil as the medium. The directional valve is used to control the direction of fluid flow, thereby controlling the direction of movement of the actuator (hydraulic cylinder or hydraulic motor). This type of directional valve is designed for single unit installation, characterized by balanced internal leakage, therefore, there is no need for oil leakage ports.

Various types of valves are suitable for;
Direct tube connection or
Plate installation
The valve components are all made of steel, which allows the valve body to withstand pressure shocks without leakage. The impact caused by pressure shock can sometimes be observed in the casting of valve bodies after long-term use, manifested in the formation and transformation of subtle cracks on the surface, especially when operating under full allowable pressure. In this series of directional valves, this phenomenon can be avoided from the beginning. The inner hole of the valve body is polished with steel. The hardened and ground valve core is polished/deburred. These measures ensure the roundness and accuracy of the geometric shape (controlling the edges to prevent wear or widening), and appropriate sealing clearances ensure minimal leakage. Casting materials (molded castings of zinc and aluminum) are only used for non pressure parts, such as control mechanism housings, spring covers, base plates, etc. We can also provide manual control mechanism housings made of ductile iron, especially for use in harsh working conditions and when valves are connected in series.

Pressure Pmax=350-500 (700) bar
Flow Qmax=6-120 L/min

Suppression cycle

Combine the flow rates of two pumps for fast forwarding. When the set pressure of the low-pressure pump required for fast forward is reached or exceeded, the low-pressure pump can be automatically switched to a non pressure cycle state. The guarantee of two-stage pressure is achieved through the built-in high-pressure relief valve and low-pressure unloading circulation valve with relief valve function.

pressure holding

The 2/2-directional valve, one-way valve, and all other functional components connected to the load oil port A are leak free. During the suppression period, there is no need for additional control of the hydraulic pump. When the holding pressure is reached, the dual pump is cut off through a pressure relay. Prerequisite: The press cylinder should have no leakage.

The valve has good sealing performance and basically no internal leakage Even when working under high pressure, the valve core will not get stuck and the action is very reliable Due to the good ratio between leverage and control force, the valve changes direction smoothly without any impact phenomenon To avoid adverse effects, the vast majority of directional valves can be assembled with plug-in check valves and quasi back pressure valves, or with plug-in throttle valves at the inlet A bypass one-way valve and a bridge type one-way valve can be integrated into the bottom plate of the pipe connected single valve

HAWE solenoid valve from GermanyCR4M-WG230