How to fix a leaking spray gun handle and why it happens?

A leaking spray gun handle is a common issue faced by automotive refinishing professionals, but it’s often caused by a few easily fixable factors. In this article, we will go over why spray gun handles leak and how to fix them quickly and efficiently.

Reasons for a Leaking Handle

Most leaks occur due to a faulty or worn-out O-ring or seal within the handle. Over time, exposure to chemicals, solvents, and pressure can cause these components to degrade.

How to Fix a Leaking Handle

• Disassemble the Gun: First, ensure the spray gun is disconnected from the air supply. Then, carefully disassemble the handle and remove the leaking components.

• Replace the O-Ring or Seal: Inspect the O-ring and replace it if it appears worn or damaged. Apply a light layer of lubricant before inserting the new O-ring to ensure a tight seal.

• Reassemble and Test: After reassembling the gun, reconnect the air supply and test the spray gun for any leaks.