The CA25DD (or Goyen type CA25DD) is a high-performance 1-inch pulse jet diaphragm valve widely used in industrial dust collector and baghouse cleaning systems.
Key Specifications & Features
Type: Pulse jet diaphragm valve with an integral solenoid.
Connection / Design: Features DD-series compression coupling ends (Dresser Nut design) for quick, tool-free installation directly onto smooth-walled pipe blowtubes without male threading.
Port Size: 1 inch (25 mm).
Application: Used in reverse-pulse filter cleaning systems to remove dust build-up from filter bags, cartridges, or envelope filters.
Voltage Options: Commonly available in various solenoid pilot coil voltages including 110V AC, 240V AC, 24V AC, and 12V/24V DC.
Threaded Type Immersion Type Dresser Nut Type Flanged Type
RCA Series Solenoid Coil Armature Assembly Pulse Controller
Working Principles:
The electromagnetic pulse valve is composed of electromagnetic pilot operator, diaphragm and valve body. Due to difference of pressure acting on two sides of the diaphragm, the diaphragm is pressed closely against the outlet of valve to keep the valve stays in “closed” position.
When energized by an electric signal from the controller, the electromagnetic armature will move to open the discharge opening of back cavity.
The compressed air in back cavity bursts out to relief pressure and pressurized air in front cavity pushes up the diaphragm to open the main outlet of valve, then the electromagnetic pulse valve opens and starts to blow.
When the signal disappears and the spring works immediately to send the pilot operator back to its original position and close the discharging opening. The diaphragm will close the passage by the effect of the pressure in the front cavity and the spring. The pulse valve stops blowing.
The orifice in the diaphragm damps the airflow when the armature is lifting up for releasing the pressure. When the discharge hole closed, the pressure gas will fill into the front cavity to close the passage by the diaphragm. The pulse valve stops blowing.
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