Core Structural Components
Solenoid Pilot Head: Receives pulsed electrical signals and drives the movable pillar to control the opening and closing of the pressure relief hole.
Diaphragm: Mostly made of nitrile rubber fabric-reinforced material, it separates the front and rear air chambers and directly controls the opening and
closing of the airflow passage.
Valve Body: Mostly formed by die-casting aluminum alloy, it provides a pressure-bearing air circuit space.
Spring: Drives the valve core and movable pillar to reset after the electrical signal disappears, restoring the sealing state of the valve.
Throttling Orifice / Damping Orifice: Balances the pressure of the air chambers to ensure tight closing and fast reset speed.
Complete Working Principle
Closed State: Compressed air enters the rear air chamber of the diaphragm through the throttling orifice. Since the area of the rear chamber is larger than that
of the front chamber, the air pressure force presses the diaphragm tightly against the output port, keeping the valve closed.
Opening and Blowing State: The controller outputs an electrical signal, the solenoid pilot head attracts the movable pillar to open the vent hole of the rear air chamber,
the pressure in the rear chamber is released rapidly, and the pressure in the front chamber pushes up the diaphragm, so the valve opens to complete the blowing process.
Reset and Closing State: When the electrical signal disappears, the spring of the pilot head drives the movable pillar to reset and seal the vent hole. Compressed air
refills the rear air chamber, the pressure is rebuilt to press the diaphragm down for reset, and the blowing stops.
Mainstream Product Classification
Right-angle Type: The inlet and outlet of the valve body form a 90° angle. It is directly controlled by electrical signals and is suitable for the conventional pipeline
layout of dust collectors.
Straight-through Type: The inlet and outlet of the valve body form a 180° angle, which is suitable for special direct-connected pipeline scenarios.
Submerged Type: The air inlet is directly submerged in the air package, with smaller pressure loss and stronger blowing force.
Special Types: Including ultra-low pressure type, explosion-proof type, plateau-adapted type, etc., which can meet the requirements of special working conditions.
Key Performance Parameters
Operating Pressure Range: 0.1-0.7MPa for regular models, and some imported models support 0.05-0.75bar.
Response Time: Less than 0.03 seconds, and some high-end models can reach 0.023-0.027 seconds.
Diaphragm Service Life: Over 800,000 times for regular models, and high-quality products can achieve more than 1,000,000 blowing cycles without leakage.
Applicable Environment: Temperature 1-50°C, humidity <85%, no strong corrosive medium; some high-temperature resistant models can withstand -30°C to 200°C.
Operating Voltage: DC24V as the mainstream, and multiple specifications such as AC220V and AC110V are also supported.
Typical Application Scenarios
Industrial Dust Removal Field: As the core switch of the ash cleaning system of baghouse dust collectors, it performs periodic blowing to remove dust on the surface
of filter bags.
Industrial Automation Field: As a control component of pneumatic systems, it precisely drives actuators such as air cylinders and air motors.
Agricultural Irrigation Field: Matched with water-fertilizer integrated equipment to realize remote timed opening and closing of irrigation pipelines.
Fluid Control Field: Realizes fast on-off control of gas and liquid pipelines in industries such as chemical engineering, pharmaceuticals and water treatment.
