ARO PD05P-ARS-SSG-B Pump Part Exploded View Diagram & 1/2" Non-Metallic Compact Series Repair Parts PDF Manual. Air Section Service Kit: 637428, Fluid Section Service Kit: 637427-SG, Ported Exhaust Service Kit: 637438, Dual Inlet / Dual Outlet Kit: 637440-1 Available. Replacement Diaphragm, Seat, Balls, O-Ring, Seal, Rod, Manifold, Washer, Bolt, Nut, Gasket, Fluid Cap, Center Body, Plate, Spool Assembly, Valve.