RVV4ST - Betts - Tank Trailer 4"" Swivel Vacuum Vent for DOT407 and DOT412 tankers - LJI Part: RVV4ST

The Betts' GuardianTM vacuum breaker is a spring loaded reclosing vacuum relief valve for use on a cargo tank's vacuum relief system. The vacuum breaker 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 Seal tabs on shroud and swivel nut for security measures. Simple In-place Maintenance Available ECTFE (Halar ) coated. Multiple sizes and mounting options Multiple seal options Vibration damping design ,

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