2008 Warren Rupp Sandpiper Double Diaphragm Pump. Model: S05B2P2TPNS000. Approximate capacity: 14 gpm. Handles solids up to .125 in. (3mm) in size. Operating temperature ranges: 180°F to 32°F. Maximum recommended air pressure: 100 psi. Features a solid ball check valve powered by compressed air and of a 1:1 ratio design. Wetted material: polypropylene. Diaphragm / check valve materials of construction: Virgin PTFE-Santoprene / Backup Virgin PTFE check valve seat: Virgin PTFE. (1) ¾ in. MNPT inlet. (1) ¾ in. MNPT outlet. (1) ½ in. FNPT airline inlet. Shipping weight: 16 lbs. Overall dimensions: 10 1/8 in. L x 7 1/8 in. W x 11 ¾ in. H.(ACN7).