Industrial 71R9004 Freon Refrigeration Solenoid Valve

Red Dot 24V Freon Solenoid Valve 71R9004 (RD-4188-24P) is a 24‑volt liquid‑line solenoid valve designed to control freon refrigerant flow in the liquid path of refrigeration and air‑conditioning circuits. The RD‑4188‑24P designation identifies the coil and port configuration, and this variant is commonly sold as the 71R9004 replacement, serving as an aftermarket equivalent to Kysor 404205 for field repairs. In practical use, the valve is installed in the refrigerant path to open or close flow under 24V electrical control, a setup frequently referenced in heavy‑duty mobile A/C systems and other freon installations. Vendors describe the model as Red Dot’s 71R9004 RD‑4188‑24P, reaffirming its cross‑reference to the Kysor part number and ensuring compatibility with equipment that specifies 71R9004 or RD‑4188‑24P. When selecting a replacement, ensure the coil is 24V DC and verify the mating connections align with the RD‑4188‑24P specification to guarantee a proper fit in the original liquid‑line refrigerant circuit.