Guardian Pressure Valve, ANSI Flanged
The Betts’ Guardian™ ANSI flanged valve is a spring loaded re-closing pressure relief device/valve for use as a 407 or 412 cargo tank’s primary pressure relief system. The pressure relief valve is designed, tested and marked in accordance with 49CFR §178.345-10, 49CFR §178.347-4 and 49CFR §178.348-4.
Compact Optimized Flow Design
316 Stainless Steel construction
Teflon seals and wear components
Safety Stop Screw to help prevent accidental un-threading of housing
Seal tabs on shroud for security measures.
Simple In-Place Maintenance
Available ECTFE (Halar®) coated.
Multiple sizes and mounting options
Multiple seal options
3” and 4” ANSI Flanged Connection








