Product Overview
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.
Features
- Superior, self-cleaning ball and seat seal provides long product life
- Exceeds ANSI Class VI Leak Standard (bubble tight)
- Body is made of high strength, lightweight, anodized 6061 aluminum alloy
- Variety of porting options
- Designed for use with lubricated or non-lubricated air systems
- Tamper resistant with no required maintenance
- Prevents load drift and provides rapid stopping of load
- Patented and Made in Waukesha, Wisconsin USA
- Standard 3-year warranty
Nu-Check® Pneumatic Check Valve Dimensions
Additional Notes:
- MTTF is over 100 million cycles for Buna-N seals and over 40 million cycles for Viton® seals
- NPTF Ports conform to ASME B1.20.1-2013 Pipe Threads, General Purpose (Inch)
- BSPP (G) and M5 Ports conform to ISO 16030:2003: Pneumatic fluid power – Connections – Ports and stud ends
- Operating pressure 15 to 150 psi
- Operating temperature 30° to 150°F
- 10-32 and 1/8″ port sizes are no longer available as Nu-Check® options – please see our line of Clean-Check® pneumatic valves for compatible configurations
- Stainless steel 303 is no longer an available option for Nu-Check® configurations – please see our line of Clean-Check® pneumatic valves for stainless steel valve options
Model Ordering Information
Product Configurator
The U.S. list price displayed is for individual quantities of 1-24. Contact your Aladco® Distributor or Aladco® for volume pricing of 25 or more valves.
Additional information
| Model Type | 30 : Nu-Check Valve® – Extended Manual Override, 31 : Nu-Check Valve® – Flush Manual Override, 32 : Nu-Check Valve® – No Manual Override |
|---|---|
| Inlet-Outlet Port Size | 25 : 1/4 Port, 38 : 3/8 Port, 50 : 1/2 Port, 75 : 3/4 Port, 01 : 1.0 Port |
| Seal Type | 01 : Buna-N Seals, 02 : Viton® Seals |
| Thread Class | [blank] : NPTF Thread Class, BSPP : G BSPP Thread Class |
| Optional Suffix | [blank] : No Optional Features, HP : High Pressure (350 psi maximum), NCP : No Cracking Pressure, VAC : Vacuum |