Fuji Spray Bottom Feed Cup Parts Kit is a 9-piece set of handy wearable parts for reliably sealing the spray gun cups. The kit includes 3 gaskets, 3 diaphragms, and 3 pressure tubes with check valves. Working together, the diaphragm, gasket, and pressure tube protect against paint backup. Ensure top productivity by always having extra parts for cup and turbine maintenance. NOTE: For cup parts kit for cup assembly 2042 - see part number 2039