Repair Kit, Check Ball Material PTFE, Compatible with Grainger Part Number 3FPP9, Compatible with Manufacturer Model Number 666250-144-C, 666251-244-C, 666252-444-C, 666252-544-C, 66625B-444-C, 666270-144-C, 666271-244-C, 666271-444-C, 666272-444-C, 666272-544-C, 66627B-444-C, 66627C-544-C, Diaphragm Material PTFE, Number of Check Balls 4, Number of Diaphragms 4, Number of O-Rings 5, Number of Seals 5, Valve Type Ball, Product Type Fluid End Repair Kit, Media Intake Pressure (Maximum) 120 psi