... produce PISTON ASSEMBLY For Triplex and Duplex mud Pumps Piston cores are made of normalized ... quality standards. Parts are available for these popular pump models:Emsco:F-1300, F-1600, FB1300, ... : 7P50, 8P80, 9P100, 10P130, 12P160, N1300, C-250, K-700, 14-P-220, E-700/G-1000, ... K-500, K-380, K-500A/700A, C-250/350, JWS-400, Gardner Denver: PZ7, PZ8/9 ... an inquiry piston assy for mud pump parts