Yamada 852100-UL Pump Part Exploded View Diagram, Model NDP-25BAH-UL & Air Operated Double Diaphragm Pumps Repair Parts PDF Manual. Air Motor Kit: K225-AM, Liquid Side Kit: K25-MH-UL, Body Assembly: 804665, Valve Body Assembly: 802362 Available. Diaphragm, Manifold, Center Disc, Center Rod, Air Chamber, Wave Washer, O-Ring, Ball, Valve Seat, Reset Button, Base, Silencer, Bearing, Gasket, Bolt, Nut.