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- FPPI Brass Unions with Orifice are specifically designed for use in the pressure sensing line for fire pump systems. The unions are fitted with either a 1/2 or 3/32 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 or 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 hole. Check with pump manufacturer for proper use.
- Contains lead not for use in water systems intended for human consumption
- MaterialBRASSEnd StyleIPSFinishRough BrassFitting / Connector TypeUnionManufacturerASC Engineered SolutionsManufacturer #4399001610Nominal Size1/2 inSub-BrandFPPI