Details test and examination criteria for pilot gas filters that have a maximum operating gas pressure rating of 1/2 psi. The temperature range shall be 32°F to 125°F (0°C to 51.5°C) and may be capable of operating at a higher temperature, lower temperature, or both, when so specified by the manufacturer.
ANSI Z21.35a-2010 history
2010ANSI Z21.35a-2010 Pilot Gas Filters, same as CSA 6.8a-2010, same as Z21.35a-201x