includes a tee to connect the P1 and P2 pressure transducers and two ball valves. It also connects to the nitrogen inlet of the VSP2 solenoid box. One ball valve isolates the tree from the other plumbing for calibrating the transducers (in pressure communication with the guage) and another valve allows the pressure to be vented.
* Please note that the pressure transducers, digital gauge and thermocouple simulator are sold separately