Pick Heaters has developed the Variable Flow Heater with plant washdown in mind. It is designed to serve as a single, central water heating system that is isolated from operators and use points. The unit can handle the wide range of water flow rates required throughout the facility. It features a low-head pump that maintains proper water velocity during low loads, while maintaining tight temperature control regardless of demand. It can respond to frequent start-stop applications and still deliver accurately controlled hot water on demand. Temperature overrides can be put in place, preventing any possibility of overheated water from reaching any of the points of use. The product is normally used on water service and is offered with cast iron housings as standard. Piping, fittings and valves are iron, bronze and steel with alternate materials available upon request.