Dwyer Instruments A-421 Pressure Tip 320788-704 Key Benefits Optimized Refrigerant Control:

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

the 311077 is rated for use in both hydronic and steam systems

As a verified OEM replacement part

The unit features an integrated safety interlock

Dwyer Instruments A-421 Pressure Tip 320788-704 Key Benefits Optimized Refrigerant Control:As 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