Function Valves

Four and Five function valves allow for relief of excessive pressure in discharge line to protect connections and tubing; bypass gas and fluid during normal pump operation. These valves are easily installed with simple, one-handed operation. They are also packed with features that increase safety, enhance performance, and generally improves the convenience of operation. Pulsafeeder pumps will mostly have a five function valve (if installed) and LMI pumps will have a four function valve (4FV) if installed.