Double Vaccuum reliever with EPDM O’Ring

The Double Vacuum “RELIEVER” is made to answer the need of IBC users and others who require a breaker for gravity drain or pump out up to 50 GPM without the necessity of removing the fill cover.
It has a very low profile, is fail safe in a tip over and guaranteed for two years from date of installation. The vacuum releases at .5 PSI.

Injection molded from virgin Polypropylene, the “RELIEVER” has superior chemical resistant properties.
Both models thread into 2” straight NPT. Lock nuts are available upon request.

We offer a variety of O’rings and springs to suit each individual application. Our standard O’ring is Viton (brown) for maximum chemical resistance. EPDM, BUNA and EPDM/FDA food grade are available upon request. Our standard spring is wound from 316 Stainless Steel. We also offer Teflon coated 316 Stainless as well as Hastelloy C which is one of the most universally corrosion-resistant alloy available.