The 9500BU 2-solenoid, 220V automatic steam boiler is part of a new generation of highly flexibly, professional, Made in Italy steam boilers. It’s raison d’être, is its ability to go from an external direct water feed to an internal water supply with 5L boiler tank. This is done with a turn of a lever inside the unit. Everything else you expect from a Reliable boiler is included; Ranco pressure control, heavy duty contactor switch, blow down valve and heavy duty casters.