Catalog

Vacuum Relief Vent 4" Swivel 407/412 With Ports

Unit of Measure

Package Type

N/A Each

Units Per Package

N/A 1

Size

N/A 4 "

Vendor Item #

N/A RVV4ST

Weight

N/A 8.5 lb

Mounting

N/A Swivel Nut

Manufacturer

N/A Betts

Betts #

N/A RVV4ST

Girard #

N/A 407MVBLTT

Elastomer

N/A PTFE

Features

N/A 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. 1” NPT and ¼” NPT mounting ports. 3? and 4? NPS Swivel connection.