Torching, picking, sanding, and wire brushing off the gun and related parts often does more damage than good. At best, it cleans the parts but accelerates service life by abrasive cleaning. Utilizing an effective gun cleaner to reduce excessive cleaning of parts is recommended. Generally, a quality gun cleaner can clean parts within 15-20 minutes when the gun cleaner is heated overnight at room temperatures.
Category Archives: Spray Guns
Clean your screen filter
Materials entering the proportioning unit may require screening or filtering. Therefore, manufactures of the spray equipment commonly install y-strainers or filter housings on or near the machine to pre-screen the materials as they are transferred from the storage vessel prior to entering the proportioning unit. Proper cleaning or replacement of the screen filter must be completed daily or as needed to ensure proper material supply is achieved. Clogging and restriction of the screen filter may cause cavitation and/or poorly dispersed product known as off-ratio.
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Apply spray better with this trick
Spray mechanics generally prefer a product that maintains a good level of sprayability for processing. Applying or processing spray foams just on the cooler side of the temperature processing spectrum can aid in maintaining a good pattern.
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Test Your Side Seals and O-Rings for Proper Seating
After replacing the o-rings in your AP-2 Gun, it’s important to make sure they are sealing properly. In order to test if the side seals are seating properly and the o-ring is sealing, follow these steps:
With the safety on and the gun disconnected from the hose, hook an air hose onto the gun and pull on the trigger. This pulls the chamber back slightly which cuts the airflow coming out of the tip. The air should cease from blowing out of the tip and should only slightly exhaust at the vent near the handle and the air-motor. If the side seal, the o-ring around the side seal or the oring at the screen screw is not sealing the air will push out of the check valve seat.
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Use the Correct Mixing Chamber & PCT Combo
When using the AP-EX extension gun in 16” on center stud wall type spray application – try using PMCs – 00X Mixing Chamber and PCT combination. (PN# KT-814-00X) Set your spray foam machine around 1,000 PSI on you’re A and B gauges. This will allow for further extended control of the AP-2s quick change mixing spray head.
