Dwyer Instruments A-421 Pressure Tip 340155-7026 While primarily designed for Armstrong

While primarily designed for Armstrong Air and Ducane equipment

it functions correctly at 0 psi and does not require a pilot pressure to actuate the plunger

the 767A-383 includes a high-temperature universal mounting bracket and ceramic wire nuts to accommodate various burner configurations

you would typically require the 14004138-001 retrofit kit

the entire unit should be replaced to ensure system reliability

Dwyer Instruments A-421 Pressure Tip 340155-7026 While primarily designed for ArmstrongAs a field technician, you know that accurate static pressure measurement is the baseline for diagnosing system performance. The Dwyer Instruments A 421 Static Pressure Tip is a professional grade pickup designed for permanent installation in ductwork and air handlers. Featuring a 6 inch probe with four radially drilled . 040 inch sensing holes, this assembly effectively eliminates the impact of air velocity and turbulence to provide a true static