Humphrey's 125 Series air-piloted valves are simple, reliable, 2-position, pressure operated, spring and pressure-reurn, 2-way and 3-way valves offering high flow rates (27.5 SCFM at 125PSI) and fast cycling (to 600 CPM). They feature a short stroke for fast response.
These small, lightweight, double diaphragm poppet, "no stick" valves require no lubrication.
The use of lubrication, however, will not prevent the 125 series from functioning if the lubricant is varied or removed.
The 125 Series air-piloted valves have no sliding seals subject to cuts, metal seals subject to scratches, or O-rings subject to damage or replacement, so they are ideal for use with contaminated media and are unaffected by compressor varnish.