Pilot solenoid valve

Pilot solenoid valve
Principle: When the power is turned on, the electromagnetic force opens the pilot hole, and the pressure in the upper chamber drops rapidly, forming a pressure difference between the upper and lower parts around the closing part. The fluid pressure pushes the closing part to move upward, and the valve opens; when the power is turned off, the spring force pulls the pilot hole open. When the hole is closed, the inlet pressure passes through the bypass hole and quickly forms a pressure difference between the lower and upper parts around the valve closing part. The fluid pressure pushes the closing part downward to close the valve.
Features: The upper limit of the fluid pressure range is relatively high and can be installed arbitrarily (customization is required) but the fluid pressure difference condition must be met.
2. Solenoid valves are divided into six subcategories based on differences in valve structure, materials and principles: direct-acting diaphragm structure, step-by-step direct-acting diaphragm structure, pilot diaphragm structure, direct-acting piston structure, Step-by-step direct-acting piston structure and pilot piston structure.
3. Solenoid valves are classified according to function: water solenoid valve, steam solenoid valve, refrigeration solenoid valve, cryogenic solenoid valve, gas solenoid valve, fire solenoid valve, ammonia solenoid valve, gas solenoid valve, liquid solenoid valve, micro solenoid valve, Pulse solenoid valve, hydraulic solenoid valve, normally open solenoid valve, oil solenoid valve, DC solenoid valve, high pressure solenoid valve, explosion-proof solenoid valve, etc.