Hypro 5300 Valve Assembly - Set of 4 - 3430-0197 Hypro 5300 Valve Assembly (3430-0197) Includes 4 unitized valve sets (3400-0073) Works on Hypro 5300 Series Piston Pumps (5315, 5320, 5325, 5330, 5321, 5322, 5324, 53702, 53703, 53704)