ANVER’s line of CheckVac Valves feature a low 0.17 psi cracking pressure with flow rates up to 63 CV and a one-piece shell to eliminate leaks. Unlike pressure check valves, they optimize system performance by not wasting the pump’s power opening stiffer springs, resulting in up to four times better flow. Designed for vacuum clamping, lifting and holding applications. Made from a leak-free, seamless, one-piece anodized aluminum body with a smooth bore and have a plastic valve element with a specially tempered stainless steel spring and an O-ring seal. Offered in 1/4” through 2” NPT sizes.