StacksVerified U.S. regulatory reference

33 CFR §159.119

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The device must operate in an ambient temperature of 5 °C with inlet operating fluid temperature varying from 2 °C to 32 °C and in an ambient temperature of 50 °C with inlet operating fluid temperature varying from 2 °C to 32 °C.