FPPI's ½" IPS Brass Union with Orifice is specifically designed for use in the pressure sensing line for fire pump systems. The union is fitted with a ¼" orifice which will provide adequate pressure drop into the sensing line without allowing unnecessary pump starts due to major pressure fluctuations that may be indicated in the larger diameter (½") line. The union is only allowed to be used where the water is clear and will not allow sediment to block the ¼" hole. Check with pump manufacture for proper use.
FIG 08-539 Orifice Union
08-539 FPPI Orifice Union Submittal
Sight Glass
Swing Check Valves
Ball Drips, Brass
Angle Globe Valve
TrimFit® Bronze Butterfly Valves - FNPT
TrimFit® Three-Way Brass Valve
TrimFit® OS&Y Fire Main Gate Valves
Globe Valves
TRIMFIT® Test & Drain Valve