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

The Betts Guardian RVV4ST Vacuum Breaker is a spring-loaded, reclosing vacuum relief valve used on a cargo tank's vacuum relief system, designed, tested, and marked in accordance with 49CFR 178.345-10, 178.347-4, and 178.348-4. It features a compact, optimized flow design in 316 stainless steel with Teflon seals and wear components, seal tabs on the shroud and swivel nut for security, and a vibration-damping design. It fits both 3-inch and 4-inch NPS swivel mounting configurations and is available with an ECTFE (Halar) coating.

• Connection: NPS Swivel
• Size: 3-inch and 4-inch
• Application: DOT407 and DOT412 Tanks
• Body Material: 316 Stainless Steel
• Seal Material: Teflon
• Function: Vacuum Breaker
• Feature: Vibration Damping