FPPI's 1/2 in 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 1/4 in 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 (1/2 in) line. The union is only allowed to be used where the water is clear and will not allow sediment to block the 1/4 in hole. Check with pump manufacture for proper use.

• Leaded
• Not for use in water systems intended for human consumption
• With 1/2 in orifice

Applications: For use in the pressure sensing line For fire pump systems

• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS1298_Spec.pdf