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If your existing sensor head insulator is cracked or fouled
Common indicators include the furnace shutting off 2-5 seconds after the burners ignite
Equipped with a 1/2" NPT lower connection and a 2-inch probe length
Key Benefits Industrial Durability: The molded coil construction is resistant to environmental contaminants and mechanical shock
which is specifically designed for hot water (hydronic) boilers
Belimo B223 Valve 30067439-890 If your existing sensor headFor contractors demanding precise hydronic control, the Belimo B223 Valve is a robust 2 way Characterized Control Valve (CCV) engineered for critical HVAC applications. This 1 inch, NPT threaded ball valve features a 10 Cv rating and an equal percentage flow characteristic, ensuring stable and accurate modulation across its 75 controllable flow range. Constructed with a durable nickel plated forged brass body, a stainless steel ball and stem, and PTFE