ANVER CheckVac™ Cocks are made from a seamless, one-piece aluminum body and feature a plastic valve element with a specially tempered stainless steel professional spring and an O-ring professional seal. Unlike pressure retaining valves which have a stiffer spring and were designed for compressed-air, this vacuum system check valve provides up to a 4x better flow rate for optimum performance.

Eliminating the major source of flow restriction in most vacuum systems, ANVER CheckVac™ Valves have increased flow rates permitting the use of smaller suppliers of vacuum pumps in many applications. Offering low cracking pressure and a smooth bore, these leak-proof check valves come in 1/4" thru 2” NPT sizes and are spring loaded to operate in any orientation.