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The Watts 0383942 (Model 740-1 1/2-75) is a high-capacity ASME Section IV safety relief valve engineered specifically for liquid-filled hot water heating boilers and storage tanks
Its compact design and Normally Open contact configuration simplify integration into existing control circuits
essential component for any contractor maintaining high-performance cooling equipment
this is the 1187169 ignitor cable only
Resideo SV175 Air Vent L99H008 The Watts 0383942 (Model 740-1The Resideo SV175 Supervent Top Air Vent is a high capacity air elimination component engineered for both residential and light commercial hydronic heating and cooling systems. Built with a heavy duty brass construction, this automatic air vent is designed to purge trapped air from the system, preventing air locked coils and reducing hydronic noise. It features a 1 2" NPT connection and incorporates an integral check valve, allowing for easy
