The corrosion-resistant stainless steel monitor VARUN 643 BZ is a durable manual control monitor for fixed installation. Monitors are used to protect flammable liquid storage tanks, loading racks, sea dykes and many other industrial applications. It is designed for installations where monitors with higher currents and longer direct current are required. The monitor can be operated manually by a firefighter. The monitor nozzle is a constant flow device and changing the nozzle discharge pattern from straight stream to wide angle mist during operation does not change the flow.