cracked pneumatic tubing

In a 2-wire setup

and 97D series components

If you are servicing older equipment

the bimetal disc may have suffered mechanical fatigue

Hydrotherm 20-1014 Gauge Els PW 17895 cracked pneumatic tubingIf you are servicing older hydronic systems, the Hydrotherm 20 1014 Pressure & Temperature Gauge is an essential OEM replacement part for maintaining system integrity. This heavy duty boiler tridicator provides simultaneous monitoring of critical operating parameters, featuring a 0 75 PSI pressure scale and a 50F to 320F temperature range. Designed with a standard 1 4" NPT connection, it ensures a secure, leak free seat on the boiler manifold or