Aladco Nu-Check Valve

The Aladco Nu-Check valve is a normally closed check valve that can be either overridden manually or by air piloting to allow two-way flow.  The tightly sealed Nu-Check valves are used on pneumatic devices to stop motion upon loss of air pressure and prevent the device from drifting. The Nu-Check valve, designed specifically for pneumatics, is a patented Aladco product. It was the first check on the market with both manual and pilot release capabilities. The unique bubble-tight seal keeps devices from drifting towards the “checked” position in the event of pressure loss or fluctuation. To release the seal, press the manual override button or operate the pilot. Aladco highly recommends the use of spring centered 3 position 5-way centered vented valves for directional control with the use of Nu-Check valves.