this critical component is a direct replacement for the MET140 sight gauge protector

Structural Integrity: Constructed with heavy-duty materials to withstand high-temperature environments

ensuring full compatibility with Hot Dawg unit heaters manufactured after May 2007

If you notice the main valve failing to open or erratic fluctuating downstream pressure

Engineered specifically for Wayne FH oil burners and compatible with firing rates from 4 to 13 GPH

Automation Components Inc (ACI) A/20K-D4-PB Thermistor 326058-758 this critical component is aThe Automation Components Inc (ACI) A 20K D4 PB Thermistor is a high precision duct temperature sensor engineered for HVAC Building Automation and light industrial systems. This model features a 4 inch 304 stainless steel probe and a 20K Ohm NTC sensing element, providing an accuracy of + 0. 36F (0. 2C). Designed for rapid installation, the unit includes a flame retardant ABS plastic box enclosure with a built in mounting flange and a foam vibration