The Betts’ Guardian^TM vent is a spring loaded reclosing pressure relief device/valve for use as a 407/412 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 unthreading 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″ & 4″ NPS Threaded Connection

Seal Kit part number: SK-RVPT*

*Mounting gasket not included in seal kit

Spanner wrench part number: 75825EY

Dis-assembly wrench number : 75819ZC

For additional information on Betts products and Proposition 65 list please see: https://www.bettsind.com/proposition-65/