| The 725D Series valve systems consistently dispense a wide range of medium to thick fluids, including greases and silicones. The piston design provides a slight snuff-back at the end of the dispense cycle for positive fluid cutoff. These pneumatically operated valves are ruggedly constructed and feature a unique UHMW* polymer diaphragm that isolates the wetted components from the actuator. The UHMW* sealing head provides long wear. The 725DA-SS provides stroke adjustment for both fluid flow and snuff-back control. The 725D-SS version is nonadjustable and provides fixed stroke travel. *Ultra High Molecular Weight polyethylene |