Part Number

13518, 13519, 13520, 13521, 13522, 13523, 13524, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13534, 13535, 13536, 13537, 13538, 13539, 13540, 13541, 13542, 13543, 13544, 13545

Manufacturer

Viking

Description

The B-3 & B-4 Pilot Operated Pressure Control Valves are factory assembled units. The unit consists of a J-2 Halar® coated Flow Control Valve, a Speed Control Valve, a C-2 Pilot Pressure Regulating Valve, and all the necessary trim. The Pilot Operated Pressure Control Valve is for use on wet sprinkler systems where it is necessary to reduce a higher inlet pressure to a lower delivery pressure and automatically maintain that pressure within a close limit, regardless of fluctuations in the higher pressure inlet line.