The ASCO™ Series 290 and 344 Piston Solenoid Valves are designed for demanding applications involving aggressive fluids, air, steam, fuel oil, and hot water. The Series 290 offers 2-way (Normally Closed or Open) options, accommodating pipe sizes from 3/8” to 2 1/2” and flow rates from 2.0 Cv to over 14.0 Cv, meeting RoHS, Type 4, and Type 4X standards. The Series 344 provides precise control for air, inert gas, light oils, and water, with flow rates from 0.05 to 5.19 Kv and approvals for hazardous zones.