Gas Regulator & Valve Inlet Filter Screen is used for catching pipe scale, sealing tape fragments and debris at the inlet of gas regulators, safety shut-off valves and burner controls. ANSI Z21.80 is the reference cited for it on drawings, datasheets and purchase orders.
What ANSI Z21.80 Means for Gas Regulator & Valve Inlet Filter Screen
The dimensions in the table below are supplied to suit ANSI Z21.80. Where the standard sets requirements for the finished appliance, device or system, compliance testing of that assembly stays with its manufacturer; we supply the metal mesh part to the drawing and can provide material certificates and dimensional reports with the shipment.
Gas Regulator & Valve Inlet Filter Screen Dimensions
| Size | Diameter (mm) | Mesh | Micron rating (u00b5m) | Format |
|---|---|---|---|---|
| 1/2 in | 15 | 80-Mesh SS304 | 178 | Pressed cup |
| 3/4 in | 20 | 80-Mesh SS304 | 178 | Pressed cup |
| 1 in | 26 | 100-Mesh SS304 | 154 | Flat disc + ring |
| Burner valve 10 | 10 | 120-Mesh SS304 | 122 | Pressed cup |
Specifying Gas Regulator & Valve Inlet Filter Screen Beyond the Standard
- Size: Matched to the 1/2, 3/4 or 1 in inlet.
- Mesh: 80–120 mesh stops particles that would hold a valve seat open.
- Material: SS304, compatible with natural gas and LPG.
When Gas Regulator & Valve Inlet Filter Screen Is Not the Right Choice
Not a substitute for a dedicated gas line filter where heavy dust is present.





