Humphrey 250 Series electric air valves are simple, reliable, 2-position, 2-way or 3-way valves offering high flow rates (75 scfm at 125 psig) 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 and are ideal for use with instrument air or other media which prohibit lubrication. The use of lubrication, however, will not prevent a 250 series valve from functioning if the lubricant is varied or removed.
250 series electric air 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. These versatile and economical valves can be mounted in any position.
- Fast & High Flow: Delivers up to 75 SCFM at 125 PSIG with cycling speeds up to 600 CPM.
- Reliable Poppet Design: Double diaphragm “no-stick” valve design eliminates sliding seals and O-rings.
- Lubrication-Free Operation: Performs well without lubrication—ideal for instrument air or sensitive media.
- Contamination Resistant: Operates reliably even with contaminated media or compressor varnish.
- Flexible Mounting: Compact, lightweight design allows for installation in any position.
| Manufacturer | Humphrey |
| Function | 3 Way, 2 Position |
| Normal State | Normally Open |
| Return | Spring Return |
| Port Size | 1/4" Npt |
| Mount Type | Inline |
| Voltage | 110/120Vac |
| Electrical Connection | Conduit Wire Leads |
| Control | Internal Air Pilot |