internal core

but the HH core provides the most comprehensive protection against chemical contaminants

The HH core should be selected for any system clean-up following a burnout or if you suspect high levels of wax and oil breakdown

as long as the original part number matches 8201-056 or S8201-056

Honeywell 14004905-003 Gauge Els PW 17895 internal coreThe Honeywell 14004905 003 is a precision engineered analog temperature gauge designed for hydronic and commercial boiler applications. Featuring a 3. 5 inch scale and a temperature range of 40 to 240 degrees Fahrenheit, this instrument provides reliable thermal monitoring for HVACR systems. It serves as a direct replacement for AKS 9063, maintaining compatibility with existing wells and piping configurations. Built for durability in high vibration