Stainless steel solenoid valve of
The working principle of the stainless steel solenoid valve: when energized, the electromagnetic force will open the guide hole, the upper cavity pressure drops rapidly, and a high pressure difference in the upper cavity is formed around the closing member, and the fluid pressure pushes the closing member to move up, the valve is opened; When the power is cut off, the spring force will close the guide hole, and the inlet pressure through the bypass hole rises rapidly, forming a high pressure difference in the upper cavity around the closing piece, and the fluid pressure pushes the closing piece down to close the valve.
Features: The upper limit of the hydraulic range is high, and it can be installed arbitrarily, but it must meet the conditions of poor hydraulic pressure.
According to the different valve structures and materials and the different principles, solenoid valves are divided into six sub-categories: direct-acting Diaphragm structure, step-by-step direct-acting Diaphragm structure, pilot-type Diaphragm structure, step-by-step direct-acting piston structure, step-by-step direct-acting piston structure.
According to the function, the solenoid valves are classified: water, gas, cold and cold solenoid valves, solenoid valves for fire fighting, liquid ammonia solenoid valves, gas solenoid valves, hydraulic solenoid valves, normally open solenoid valves, petroleum solenoid valves, direct-flow solenoid valve, high-pressure solenoid valve, explosion-proof solenoid valve, etc.
As for the model of hydraulic solenoid valve, each manufacturer has different arrangements for the model, such as 34BYM-L20H-T, of which 34 represents 3 digits and 4 passes, B represents AC type, and Y represents liquid power, M represents spool valve capacity, L represents threaded connection form, 20 represents nominal diameter, H represents nominal pressure, and H represents high pressure 31.5MPA,T stands for the medium code name of the spring.
Pressure control valve according to the purpose can be divided into overflow valve, pressure reducing valve and sequence valve.