ASCO (Emerson) SCG238E018V.230/50
Series 238 pilot-operated, built-in pilot, floating diaphragm, brass body, 2/2 NC (catalogue numbers SCE238D### and SCG238C###/E###)
ASCO Series 238 equivalent - 2/2 normally closed, pilot-operated brass solenoid valve with built-in pilot and floating diaphragm, G 2 BSPP, FPM seals, quoted against the 230 V 50 Hz build. Sizes differ slightly: the ASCO part has a 45 mm orifice and Kv 34 m3/h, while this valve has a 50 mm orifice and Kv 36 m3/h, about 6% more flow. Both are rated to 10 bar, and this valve opens from 0.15 bar differential against 0.5 bar. The ASCO catalogue number includes a coil; this valve is supplied without one, so a coil should be selected separately.