The Welker CV-1 Check Valve is a ball-type valve designed to allow product flow in one direction only. The ball in the standard CV-1 is spring-loaded to remain shut and will only operate once the upstream or inlet pressure exceeds the tension on the spring; this is referred to as the “cracking pressure.” The CV-1 […]

The Welker NV-1 Needle Valve is designed for use in high pressure instrumentation applications. The low operating torque makes it easy to open and close under pressure. The ported globe design reduces chilling due to the Joule-Thomson effect. The blow-out proof stem with durable construction makes it safe to operate at high pressure.