ALL-FLO Air-Operated Double Diaphragm Drum Pumps - 8PTD038 Pumps anything that pours - up to 22,000 CPS Low maintenance with run-dry capability Wide choice of pump materials for compatibility Lightweight, nonmetallic pumps handle a wide range of liquids, including water-based fluids, strong acids, and suspended solids. Self-priming and abrasion resistant pumps operate continuously at high or low speed without stalling, can run dry without damage. Adjustable flow rates. 40" suction tube and bung adapter is optional and may be purchased separately. Requires 1/4" air line, maximum pressure: 120 psi. Maximum temperature: 150º F. 5 year limited warranty. PBD pump has polypropylene housing and suction tube, Geolast seals. Features: Capacity: 9 GPM Materials: Polypropylene/PTFE Port Size: 3/8 Weight: 4.5 lbs