German M+S Hydraulic valve M+S Hydraulic model M+S Hydraulic price

M+S Hydraulic valves are electromagnetically controlled industrial devices. They are basic automation components for controlling fluids, belonging to the category of actuators, and are not limited to Hydraulic or pneumatic applications. They are used in industrial control systems to adjust the direction, flow rate, speed, and other parameters of the medium. Solenoid valves can be combined with different circuits to achieve desired control, ensuring both control precision and flexibility. There are many types of solenoid valves, each playing a role at different positions in the control system. The most common types include check valves, safety valves, directional control valves, and speed control valves.

M+S Hydraulic valve operating principle

The solenoid valve contains a sealed chamber with ports opened at different positions, each connected to different oil pipes. A piston is located in the center of the chamber, with two electromagnets on either side. When the coil of the magnet on one side is energized, the valve body is attracted to that side. By controlling the movement of the valve body, different oil discharge ports are opened or closed. The oil inlet port is normally open, allowing hydraulic oil to enter different discharge pipes. The oil pressure then pushes the piston of the hydraulic cylinder, which in turn drives the piston rod, and the piston rod drives the mechanical device. Thus, mechanical motion is controlled by switching the current to the electromagnet on and off.

M+S Hydraulic valve routine maintenance

1) Pay attention to the valve storage environment; it should be stored in a dry, ventilated indoor area, with both ends of the flow path blocked. 2) Valves should be inspected regularly, cleaned of dirt, and coated with anti-rust oil on their surfaces. 3) Valves that have been installed and put into service should undergo regular maintenance to ensure proper operation. 4) Inspect the valve sealing surface for wear and perform repairs or replacements as necessary. 5) Check the trapezoidal threads of the valve stem and stem nut for wear, and check if the packing is outdated or failed, performing necessary replacements. 6) Test the sealing performance of the valve to ensure its integrity. 7) Valves in operation should be in good condition, with all bolts on flanges and supports present, threads undamaged, and no looseness. 8) If the handwheel is lost, it should be replaced promptly; do not use an adjustable wrench as a substitute. 9) The packing gland must not be tilted or lack pre-tightening clearance. 10) If the valve operates in a harsh environment prone to contamination by rain, snow, dust, or sand, install a protective cover on the valve stem. 11) Keep the scale on the valve complete, accurate, and clear, along with the valve's lead seal and cap. 12) The insulation jacket should have no dents or cracks. 13) Avoid striking valves in operation or using them to support heavy loads.

M+S Hydraulic valve classification

Solenoid valves are divided into three main categories based on their operating principle: 1) Direct-acting solenoid valve. Principle: When energized, the electromagnetic coil generates an electromagnetic force that lifts the closing member off the valve seat, opening the valve. When de-energized, the electromagnetic force disappears, and the spring presses the closing member against the valve seat, closing the valve. Characteristics: It can operate normally under vacuum, negative pressure, and zero pressure conditions, but the nominal diameter generally does not exceed 25mm. 2) Direct-acting step-by-step solenoid valve. Principle: It combines direct-acting and pilot-operated principles. When there is no pressure difference between the inlet and outlet, energizing the valve causes the electromagnetic force to lift the pilot small valve and the main valve closing member sequentially, opening the valve. When the pressure difference between the inlet and outlet reaches the starting differential pressure, energizing the valve activates the pilot small valve, causing the pressure in the lower chamber of the main valve to rise and the pressure in the upper chamber to drop. This pressure difference pushes the main valve upward. When de-energized, the pilot valve uses spring force or medium pressure to push the closing member downward, closing the valve. Characteristics: It can operate reliably at zero pressure difference, under vacuum, or at high pressure, but it has higher power consumption and requires horizontal installation. 3) Pilot-operated solenoid valve. Principle: When energized, the electromagnetic force opens the pilot hole, causing the pressure in the upper chamber to drop rapidly. This creates a pressure difference around the closing member (lower pressure above, higher pressure below), pushing the closing member upward and opening the valve. When de-energized, the spring force closes the pilot hole. Inlet pressure rapidly enters the chamber through the bypass hole, creating a pressure difference around the closing member (higher pressure above, lower pressure below), pushing the closing member downward and closing the valve. Characteristics: The upper limit of the fluid pressure range is relatively high. It can be installed in any orientation (customization required) but must meet the fluid pressure difference conditions.

Weidou Intelligent Technology specializes in selling German M+S Hydraulic valves, M+S Hydraulic safety valves, M+S Hydraulic globe valves, M+S Hydraulic control valves, M+S Hydraulic solenoid valves, M+S Hydraulic ball valves, M+S Hydraulic proportional valves, M+S Hydraulic diaphragm valves, M+S Hydraulic butterfly valves, M+S Hydraulic hydraulic transmission valves, M+S Hydraulic check valves, M+S Hydraulic pressure reducing valves, M+S Hydraulic relief valves, M+S Hydraulic sequence valves, M+S Hydraulic balance valves, M+S Hydraulic throttle valves, and M+S Hydraulic directional control valves. All products are original imports from Germany. Customers are welcome to inquire and place orders.