243-0001 | Switching Relay, Pneumatic 3-Way, Adj Changeover, 1/8" NPT Thread Ports, 9PSI | Siemens

This 243 Switching Relay is a compact 3-way air valve that can be used to perform a variety of switching and diverting functions. This switching relay has adjustable changeover pressure, 1/8" NPT threaded ports, is factory calibrated at 9 psi, and has an ambient temperature of -20 degrees Fahrenheit minimum and 160 degrees Fahrenheit maximum.