The single large Acme thread closure ensures quick opening and positive sealing.All PBH Series vessels come complete with gauge, wrench and 3/8" drain valve.PBH Series bag vessel assemblies are made of lightweight corrosion resistant polypropylene to give you all the strength you need withoutthe weight. Bag vessel assemblies are economically priced, allowing you to install a duplex system for totally uninterrupted flow rates. click here for data sheetPeople who bought this item also bought: