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Question: “I’m getting paint out of my spray gun air cap, or my coating is sputtering while I’m spraying”.

Problem: The likely cause behind either of these problems is the coating is migrating into the air stream within the head (front) of the gun. This can certainly happen when a gun manufacturers design has the air passing along side of a stainless steel fluid passage such as on the C. A. Technologies pressure feed or gravity feed gun models.  

Problem: The likely cause behind either of these problems is the coating is migrating into the air stream within the head (front) of the gun. This can certainly happen when a gun manufacturers design has the air passing along side of a stainless steel fluid passage such as on the C. A. Technologies pressure feed or gravity feed gun models.  

 

The problem is the seal where the fluid inlet fitting intersects with the nozzle carrier (S. S. Insert) inside the gun head, because the inlet fitting has been disturbed. Successful replacement of this seal requires removal of all the parts in the head of the gun including the nozzle carrier and inlet fitting. 

 

  1. Clean the seal groove on the nozzle carrier and threads on the inlet fitting. Insert new seal in nozzle carrier.
  2. Loosely reassemble fluid nozzle, carrier, air cap adapter, and needle seal cartridge.
  3. Rotate carrier so the seal lines up with fluid inlet hole. Back-off locknut on inlet fitting and add some thread lock. Insert inlet fitting into gun head and carrier and tighten firmly to 100 to 130 inch-lbs. Tighten needle seal cartridge to 50 inch-lbs, and tighten the Locknut to 35 ft-lbs. 

 

To prevent this seal from being damaged always secure the inlet fitting from loosening with a 5/8” wrench when removing a fluid hose or gravity cup.

 

VIDEO – C. A. TECHNOLOGIES REPLACEMENT OF INLET SEAL

http://www.youtube.com/watch?v=589oE3QuBxU

 

Handle: news/question-i-m-getting-paint-out-of-my-spray-gun-air-cap-or-my-coating-is-sputtering-while-i-m-spraying