Vetus VRF56A - Vacuum operated relief valve Blue Water Stainless steel hinged bimini tot

Stainless steel hinged bimini tot slide for adding to existing rails without disassembly

Weighs 10 pounds

Refrigerated Box

gas and compounds

Depth 7-3/4"

Vetus VRF56A - Vacuum operated relief valve Blue Water Stainless steel hinged bimini totIf a waste water tank is being emptied using a powerful shore based pump out station, one unfortunate possibility is that insufficient air might enter through the vent line, causing the tank to implode. To prevent this from happening, this VETUS valve type VRF will automatically open with the increasing vacuum, thus letting air into the tank. Model VRF56 has a free flow area of more than 1,100mm2 and thus fulfils the requirements of the relevant ISO