Part number 0270494 is a Diaphragm Ring used in AirSpray HVLP ProFinsh AS1130, SprayTech AirCoat, and SprayTech ED1150/ED655 spray guns. This ring secures and seals the diaphragm within the gun's fluid or air valve assembly, ensuring proper diaphragm function and preventing leaks. Replacing a worn or damaged diaphragm ring restores reliable valve operation and prevents fluid bypass or pressure loss.
| Part Number | 0270494 |
|---|---|
| Part Description | Diaphragm Ring |
| Brand | AirSpray / SprayTech |
| Fits | AirSpray HVLP ProFinsh AS1130, SprayTech AirCoat, SprayTech ED1150, ED655 |
| Condition | New |
The 0270494 Diaphragm Ring is a precision component used in AirSpray HVLP ProFinsh AS1130, SprayTech AirCoat, and SprayTech ED1150/ED655 spray guns. It functions as a retainer and sealing element for the diaphragm within the fluid or air valve assembly, holding the diaphragm in place while allowing it to flex properly during operation.
A properly seated diaphragm ring ensures that the diaphragm creates an effective seal when the valve is closed and allows smooth actuation when opened. If the ring is cracked, deformed, or worn, the diaphragm may shift or leak, causing erratic fluid delivery, air leaks, or complete valve failure.
| Diaphragm retention | Secures the diaphragm in its correct position within the valve assembly |
|---|---|
| Sealing support | Helps maintain proper diaphragm sealing against the valve seat |
| Valve actuation | Allows the diaphragm to flex freely while maintaining its position |
| Fluid leakage | Paint or fluid leaking from the valve area indicates seal failure |
|---|---|
| Air leaks | Hissing or pressure loss in the air valve circuit |
| Visible damage | Cracked, deformed, or worn ring upon inspection |
| Erratic operation | Inconsistent fluid or air delivery traced to valve assembly |
Part number 0270494 is compatible with the following spray gun models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Brand / Model | Component |
|---|---|
| AirSpray HVLP ProFinsh AS1130 | Diaphragm Ring |
| SprayTech AirCoat | Diaphragm Ring |
| SprayTech ED1150 | Diaphragm Ring |
| SprayTech ED655 | Diaphragm Ring |
When replacing the diaphragm ring, these components are often inspected or replaced at the same time to ensure complete valve assembly performance.
The diaphragm itself may be worn or damaged; replace both for a reliable seal.
Inspect the valve seat for pitting or wear that could prevent proper sealing.
A weak or broken spring can affect valve actuation and diaphragm response.
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