Dwyer Instruments A-421 Pressure Tip 320788-704 quiet operation characteristic of ZRK5

quiet operation characteristic of ZRK5 series technology

70"wc compression switch features a heavy-duty diaphragm and rugged housing to prevent nuisance tripping and ensure long-term reliability

As a verified OEM replacement part

providing reliable solenoid operation and consistent fuel regulation

Key Benefits Optimized Refrigerant Control: Precisely meters R-22 refrigerant to maintain ideal superheat levels and system balance

Dwyer Instruments A-421 Pressure Tip 320788-704 quiet operation characteristic of ZRK5As 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