JOHNSON PUMP JOHNSON PUMP/MAYFAIR189-201951W HAND PMP 18 8 STROKES PER GAL MSRP: Price: 2099-12-31 $45.38 The Johnson Pump/Mayfair 189-201951W hand pump is a great option for those who need a small, lightweight pump. This pump has an 18-inch stroke and 8 strokes per gallon. It is easy to use and is... Add to Cart Add to Cart