The Sonicom non-drip valve is designed specifically for use with Sonicom ultrasonic nozzles and is the recommended method of controlling liquid flow in the majority of installations. The Sonicom non-drip valve ensures liquid flow starts and stops cleanly and consistently with every cycle, using the same compressed air supply as the nozzle to provide automatic control with no additional components or sequencing required.
Operating principle
The valve is controlled by the same compressed air supply used for atomisation, eliminating the need for a separate control signal. When air pressure is applied, a piston arrangement in the head of the valve advances and pushes an internal spindle down through the main body. This lifts a poppet assembly at the base of the valve off its seat, allowing liquid to flow through to the nozzle cavity.
When the air supply is removed, pressure decays and as it falls below approximately 2.5 bar the three internal springs close the poppet, lift the spindle and return the piston, interrupting liquid flow cleanly and immediately. The valve opens and closes at approximately the same pressure threshold, ensuring predictable and consistent operation.
Construction and materials
All engineered components are manufactured from stainless steel with stainless steel springs and Viton seals. The valve is rated for operation across a temperature range of -20°C to 180°C, making it suitable for demanding industrial environments.
Connections and mounting
Air and liquid ports are female 1/8" BSP parallel, compatible with a wide range of standard fittings. Two 5mm clear through holes in the main body allow the valve to be mounted directly or onto a standard stainless steel swivel bracket, which is available as an optional accessory.
Compatibility
The Sonicom non-drip valve is compatible with the full range of Sonicom ultrasonic nozzle tips. For details of complete nozzle and valve assemblies please refer to the nozzle assembly page.
