121371A Honeywell 1/2" Aquastat WellSize: 1/2"Insertion Length: 3"Shell ID: 3/8"Bulb Size: 3/8" x 3"Insulation: 1-1/2"Capillary Diameter: 5/64"Material: Copper

Immersion wells and compression fittings are available to fit a 1/2-14 or 3/4-14 NPT tapping with a range of insulation depths
* Immersion wells and compression fittings are available in a variety of lengths and dia
* Immersion wells and compression fittings are available in a variety of materials, to suit the application
* Materials include - brass, copper, stainless steel, mild steel or monel
* Element holders support the capillary and bulb or an averaging element in duct applications
* Bulb shields protect the sensing bulb from sun and weather with the bulb installed outdoors
* Accessories, including mounting clips, heat conductive compounds, waste nuts, a pipe strap and a well adapter are available for mounting sensing bulbs in various applications
* Immersion wells allow heat transfer while protecting the sensing bulb from contact with the controlled medium
* Immersion wells permit removal of the sensing bulb for testing or replacement without draining the system
* Compression fittings seal the boiler and allow bulb insertion directly into the controlled medium3 in L insertion, 3/8 in shell, 1-1/2 in D insulation and 5/64 in dia capillary1/2-14 NPT well spud