Nozzle wear and tear in pre-treatment Applications

All nozzles eventually wear or they may become clogged.  Regular cleaning and checking for wear is strongly advised.  Often worn nozzles are the root cause of ineffective spraying.  As the cost of chemicals and water often outweighs the cost of the nozzle it can be a false economy not to replace worn nozzles. Swapping out nozzles for cleaning and checking does mean downtime, especially with a large pre-treatment line with say 1000 nozzles in, but solutions exist to help speed up this process.

The case for regular maintenance

worn nozzleIt only takes a little bit of wear or clogging to change a spray pattern.  Nozzles operate by forcing liquid through a precisely machined hole.  The shape of the hole will determine the spray pattern and spray angle of the fluid.  Even a small amount  of particulate build up can seriously alter the resulting pattern.  

This can lead to:

- Areas being missed completely or undertreated
- Areas being over treated
- Chemicals being sprayed off target completely

All of which will have a negative impact on the quality of the process and will ultimately cost money.


Reasons why maintenance is not carried out regularly

So if the case for maintenance is so compelling why is it often that nozzles are left uncleaned for years at a time?  The answer is that there is significant downtime involved in removing, cleaning and then reinstalling the often thousands of nozzles in a pre-treatment line.  This downtime also has costs associated with it and it is often the perception of management that the cost of downtime is higher than that of poor spraying. 

Furthermore, it is an unpleasant job that no one really likes to do.  Spending time removing hundreds of nozzles from a smelly and noxious pre-treatment tunnel is never high on anyone's ways to spend a day. Some of the chemicals used are highly toxic and there is a significant health and safety risk associated with pre-treatment nozzle maintenance.

How the quick change system can help

Everything about the quick change system is designed to reduced maintenance times.  This lowers the negative cost of downtime and also reduces the health and safety risk. 

Quick change nozzle tips
can eliminate the need for nozzle realignment after cleaning.
Quick release nozzle holders can be easily removed from pipework for cleaning.
Quick release couplers enable pipework to be disconnected swiftly.
Quick lock risers allow the entire riser to be removed rapidly.

The quick change system from SNP's Uni-Spray range takes much of the hassle out of essential maintenance.  By helping to reduce changeover times dramatically we aim to encourage more regular maintenance of nozzles.  This in turn leads to more efficient spraying and hence a reduction in operating costs. 

Furthermore the Uni-Spray range of pre-treatment nozzles, nozzle holders, riser and connectors is manufactured to the highest quality meaning overall wear is often less than many of our competitors' products. 


Spray Tunnel Engineering Considerations

UniSpray System Parts

Pre-treatment nozzle selection table


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