The 2110-6421-3/4 is a solenoid valve manufactured by HAYS FLUID CONTROL. It operates at 24VAC, 50/60Hz and features a 2-way, normally closed, pilot-operated, piston-type design. With a maximum temperature of 195°F and a pressure range of 5-150 PSI water or 5-100 PSI air, this solenoid valve ensures precise and reliable control of fluid flow.