SIPHON PUMP Quick action pump, easily fills or empties kerosene, light oils and various water-based solvents that are compatiable with PVC. Air vent controls siphoning; pumps to higher levels and siphons to lower levels. Fits 2" bung opening in 15, 30 and 55 gallon drums. Extra Heavy-Duty Pump is all PVC and takes rugged abuse in handling a wider range of chemicals.