The Inbal preaction system is equipped with pressure control feature specifically designed for use in Fire Protection Systems where pressure reduction and flow control is needed to ensure balancing of the water pressure resources and efficient use of the overall capacity.

The Inbal Valve, when in operation, automatically reduces a higher inlet pressure to a preset delivery pressure within a narrow range. which remains steady and unaffected by the variations or fluctuations in the pressure inlet line.

The Inbal Automatic Water Control Valve used in the Preaction sprinkler system is a pressure operated, sleeve actuated, Axial Valve with the unique reliable N.M.M.P. (No Moving Mechanical Parts) design in which the only moving part when the Inbal Valve operates, is the reinforced sleeve which forms a drip-tight seal with the corrosion resistant core, preventing false operation due to transient surges in water supply pressure.