Does this sensor require a mixing tube for installation

The Lennox 18J74 Pressure Switch is a high-precision low ambient pressure switch engineered to regulate head pressure by cycling the outdoor fan motor during cooling cycles

monitoring the draft diverter or draft hood for flue gas spillage

The unit is supplied with the necessary compression fitting and a specialized tube kit to facilitate direct installation into the sensing environment

Watts 0556034 Valve 30067439-890 Does this sensor require aThe Watts 0556034 (Model LF3L 150) is a high performance 3 4 inch poppet type pressure relief valve designed specifically for domestic storage tanks and tankless water heaters. As the direct lead free replacement for the legacy Watts 0011917, this valve features a lead free copper alloy body and a rugged stainless steel spring to ensure reliable operation in demanding residential and commercial plumbing systems. Factory set at 150 psi, this ASME rated