Print Back

Vacuum Relief Vent 4" Swivel 407/412 With Ports

Unit of Measure

Specifications

Package Type

Each

Units Per Package

1

Size

4 "

Vendor Item #

RVV4ST

Weight

8.5 lb

Mounting

Swivel Nut

Manufacturer

Betts

Betts #

RVV4ST

Girard #

407MVBLTT

Elastomer

PTFE

Features

Features

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.