Red-White Valve’s automatic balancing valve model 9900 is 1/2” to 2” in size and is available with solder or threaded ends. It provides consistent laminar flow in applications where pressures can fluctuate. Specific flow rates are achieved by interchangeable cartridges sized specific to an application. Cartridges are stainless-steel and brass construction for greater durability. An integral isolation valve is provided. Valves can be delivered in kit form with hoses, strainer and air vent.