Description
Spillback nozzles can handle a wide range of flows with hardly any change in droplet size. With standard nozzles, the flow depends on the fluid pressure. With that pressure, the droplet size is also largely determined. In some processes, an adjustment range in flow is necessary without changing the droplet size.
What is a Spillback nozzle?
- A nozzle with 2 connections, an inlet and an outlet
- Unlike ordinary nozzles, the droplet size remains approximately the same at highly variable (10:1) fluid volumes.
- Cone spray pattern
- A basic system needs at least : a pump, a liquid reservoir, a backflow control valve, the necessary piping.
- Spillback sprayers are based on the pressure atomisation principle but have a fluid return connection.
- The liquid return line is fitted with a control valve to set the return volume. This allows a “turndown” ratio of 10:1 to be achieved.
- Due to the constant (high) pressure on the nozzle, droplet sizes remain approximately the same throughout the control range.
High “turndown” ratio of 10:1 (with normal nozzles, pressure means 100:1) Highly reliable, even in extreme conditions.
