the extra length can be coiled safely away from the flame

What is the primary difference between the AM-125-48 and the 21-076

it is designed to seat into existing 1/2-inch NPT thermowells commonly found in Burnham cast iron boilers

Rugged Construction: Built with a combination of high-grade aluminum and steel for corrosion resistance in harsh outdoor environments

By utilizing high-silicon steel laminations and vacuum-potted epoxy insulation

Johnson Controls V-5252-6004 Reconditioning Kit Refrigerant the extra length can beJohnson Controls V 5252 6004 Reconditioning Kit, Used with 3" V 5252 Series Valves This item is not qualify for free shipping.