This direct-acting solenoid valve features a 1/4" NPT connection and is designed for a universal flow pattern

these small orifices can accumulate oil aerosol and moisture

The primary difference is physical size

allowing for granular field adjustments via the calibration spring

ASCO 272610-005-D Coil 321702-401 This direct-acting solenoid valve featuresThe ASCO 272610 005 D Coil is a high performance replacement solenoid valve coil specifically engineered for precision automation in HVACR and industrial fluid control systems. Operating at 24V AC 60Hz, this 24V FT coil delivers a reliable 16. 1 Watts of power, ensuring consistent actuation for compatible ASCO RedHat series valves. Built for demanding environments, it features a Class F insulation rating and a watertight enclosure (NEMA 4X equivalent)