AAA Products International Inc.
7114 Harry Hines Blvd.
Dallas, Texas 75235
214-357-3851
7114 Harry Hines Blvd.
Dallas, Texas 75235
214-357-3851
Usage - 3 Way - Namur Only
Standard Namur valves are assembled for 5 port operation. A valve may be converted to operate using only 3 ports. To convert, remove the 5/16"-32 plug on the side of body and install same plug into threaded bottom port. When port 2 is plugged, the standard NSO2 works as a normally open "NO" valve using port 4. Pressure in port 1 is directed to port 4 when the solenoid is de-energized. When the solenoid is energized port 4 is connected to exhaust port 5, port 1 is blocked. To configure valve for a normally closed "NC" operation, switch the operators located on each end and flip the internal spool and/or spring. Or order a valve with the operators pre-swapped like a NOS2. In this reversed configuration, port 4 is connected to exhaust port 5 when the solenoid is de-energized. When the solenoid is energized port 1 is directed to port 4.
![NSO2 bottom open](https://files.aaaproducts.com/pages/images/NSO2_BTM_OPEN.jpg )
NSO2 Standard
4-Way Usage
![](https://files.aaaproducts.com/pages/images/SCHEM-NSO2.jpg )
4-Way Usage
![](https://files.aaaproducts.com/pages/images/SCHEM-NSO2.jpg )
![NSO2 bottom plugged](https://files.aaaproducts.com/pages/images/NSO2_BTM_CLSD.jpg )
NSO2 with port 2 plugged
3-Way Normally Open
3-Way Normally Open
![](https://files.aaaproducts.com/pages/images/SCHEM-NSO2-PORT-2-PLUGGED.jpg )
![NOS2 bottom plugged](https://files.aaaproducts.com/pages/images/NOS2_BTM_CLSD.jpg )
NOS2 with port 2 plugged
3-Way Normally Closed
![](https://files.aaaproducts.com/pages/images/SCHEM-NOS2-PORT-2-PLUGGED.jpg )
3-Way Normally Closed
![](https://files.aaaproducts.com/pages/images/SCHEM-NOS2-PORT-2-PLUGGED.jpg )