How to Clean Spray Foam Gun

Why do foam guns start leaking at the tip after a couple of months of use?

One reason is poor cleaning. Some miniscule particles of hardened foam could become lodged between the needle and the nozzle preventing the needle to close off the nozzle properly and allowing some foam
to escape.

A second reason is the brass nozzle is worn down from contact with harder substrates. If caught early, replacing only the nozzle might solve the problem. Replacing both the nozzle and the needle is recommended for a proper fit.

How to Clean Spray Foam Gun

External Cleaning

Clean the nozzle (tip) immediately after every use. Clean the nozzle and the basket valve when changing canisters. Attach a fresh can of foam within 1 minute after cleaning the basket valve.

Internal Cleaning

Only perform a thorough cleaning of the inside of the gun when the foam flow is slowing down or when you are about to store the gun for a long time. There is no need to internally clean the gun every time the foam can is changed.

Cleaning Procedure

Place gun upside down and pull the trigger until foam stops streaming out.
Unscrew the gun from the canister (fig 1).
Spray nozzle and valve with cleaning agent (fig 3).
Open up the product flow to allow clear passage of cleaner through the gun (fig 2).
Attach canister with cleaner (fig 4)
Pull the trigger and allow the cleaner to flow until completely clear cleaning fluid comes out of the gun. This will take at least 10 to 15 seconds. Please note that this cleaner needs to be collected and disposed of following local regulations. Keep the cleaner attached to the gun and let it “soak” for a minimum of 30 minutes.
Pull trigger again and spray cleaner for a minimum of 5 seconds. Then, turn the gun upside down and spray until only air comes out. Detach the cleaner can and spray nozzle and valve again to remove any residual material. If the gun is to be used within the next couple of days, attach new foam can within 1 minute after cleaning. If the gun is not going to be used but stored, pull the trigger and shake out the remaining cleaner and close the product flow ( fig. 2 )