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always remove the solenoid coil before brazing to prevent thermal damage to the internal seals and seat
As a verified OEM replacement part
the 311077 is rated for use in both hydronic and steam systems
providing reliable solenoid operation and consistent fuel regulation
Dwyer Instruments A-421 Pressure Tip 320788-704 always remove the solenoid coilAs 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
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