Install Instructions

9
INSTALLING AND REPLACING TEMPERATURE PROBES
The RTD temperature probes used with Proton assemblies are simple to install. On the valve body the temperature
probe is connected to the valve with a ¼” MNPT x ⅛”compression fitting. Teflon tape and a small amount of thread
sealant should be used on the NPT side of the fittings. The ferrule, installed with the cone facing down, then sits on the
top of the compression inlet. The compression nut is then put over the ferrule and tightened slightly, just enough to
hold the ferrule in place. The RTD temperature probe is then inserted through the entire fitting until the end of the
probe reaches approximately the center of the desired measured water stream. Finally, the compression nut is
tightened by hand to “hand-tight” plus ⅛ to ¼ turn with an adjustable or open end wrench. Use caution not to
overtighten the fitting and only tighten until dripping stops.
NOTE: if overtightened, leaks are probable and the entire RTD and compression fitting must be replaced!
Replacement part #803203
INSTALLATION OF COMPRESSION FITTING AND OUTLET RTD
PROBE ON 2” NUCLEUS VALVE BODY
¼” NPT x Compression Fitting
FerruleCompression NutRTD Probe with
10’ Lead Wire