The 1.5" pipework doesn't fit my I-Flo Pump

There are 2 x PPF100 adapters in the kit which are designed to convert the 50mm union to a 1.5" connection, allowing the 1.5" pipework to fit your I-Flo Pump. If you're still having trouble with the connection, ensure that the adapters are properly installed. If everything seems to be in order but the connection still isn't working, you might want to seek further assistance. Sometimes, specialized tools or techniques may be required to make a secure connection.