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Operating on a reverse acting sequence
It is an OEM product
These valves are rated for a wide range of common refrigerants including R404A
utilizing this specific Berko 3900 replacement part ensures that the original equipment manufacturer’s airflow curves and thermal protection standards are maintained without compromising the unit's mechanical lifespan or efficiency
Belimo B339+AFRB24-SR Valve Assembly Els PW 17895 Operating on a reverse actingThe Belimo B339+AFRB24 SR is a professional grade 3 way characterized control valve (CCV) assembly designed for precise hydronic control in high demand HVACR systems. This 1 1 2" NPT assembly features a stainless steel ball and stem to ensure long term reliability and resistance to scaling in chilled or hot water applications. With a Cv of 29 and an equal percentage flow characteristic in the A port, it provides superior linear control for air