The 1/2" NPT (National Pipe Thread) is a North American standard for tapered threads used to create a liquid-tight seal

Common Questions What capacitor is required for the Lennox 18H61

Enhanced Durability: The lightweight

Combustion Efficiency: Prevents excess air from entering the combustion chamber

Can I replace this with a higher temperature rated switch

Resideo V4043A1317 Zone Valve 340793-762 The 1/2" NPT (National PipeThe Resideo V4043A1317 is a heavy duty 120Vac hydronic zone valve engineered for precise flow control in closed loop heating and cooling systems. Featuring a 1 inch sweat connection and a robust brass body, this normally closed zone valve utilizes a spring return mechanism to ensure fail safe operation during power loss. With an 8 Cv flow coefficient and a 8 PSI maximum close off pressure, it handles high demand residential and light commercial