82050 Drum Cap.: 120lb (part# 82050) This item features: -Lightweight, corrosion-resistant zinc head casting design incorporates uniform wall thickness and an integral patented muffler which keeps noise level below OSHA standards. -150 psi pre-lubricated air motor requires no external oilier. -Pneumatically assisted mechanical air valve assures positive tripping. -Springless sir motor construction prevents premature pump failure due to spring fatigue. -Precision-machined, hardened steel slide valve for longer life. -One piece pump outlet body withstands constant high lubricant pressures. -Nitride steel plunger and bushings resist abrasion and prolong pump life. -All pumps are 100pct electronically tested to assure quality performance. -Shovel-type foot valve adds mechanical priming to normal suction. -Flow: 80.0 cu. in./min. -Operation : Ratio: 50.0 @ 1. -Operating Pressure: 150.0 psi. -Inlet Size: 1/4 in NPT(F). -Outlet Size: 1/4 in NPT(F). -Construction: Zinc. -Power Source: Compressed Air. -Type: Grease Pump Only. -Price is for 1 Each.