NEW AMENDMENT TO AS/NZS5601.1 (CLAUSE 5.2.11) SENTRY GS excess flow valves (EFV) for residential installation shut off the gas flow when a predefined closing flow rate is reached. Maxitrol’s factory adjustment (100%) provides a precise and reliable closing flow rate. In nominal flow range, the EFV remains in a stable, open position.
The SENTRY EFV is installed downstream of the main gas manual shut-off valve and the regulator. SENTRY GS EFVs with bypass orifice reopen automatically after the downstream line has been repaired and re-pressurized.
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