55 gal (US)

1/2 (ID) in

3/4 NPTF in

38.80 lbs

• Gives years of dependable trouble-free operation • Costs much less to operate—costs much less to maintain • High-volume output—air motor has extra-long stroke for powerful, uniform delivery on both up and down strokes • Shovel-type pump tube used to add mechanical priming to normal suction when needed • Sturdy construction—plunger and bushing of hardened steel for longer life, greater wear resistance • Pump outlet body of all-steel construction designed to withstand pulsation and extreme pressure • All wearing parts are tough, heat-treated steel • Plunger, bushing and air valve mating parts are micro-lapped to close tolerances • Prevents bypassing of lubricant and bleeding of air • Eliminates need to replace washers and packings • Trouble-free, positive performance • Air motor operation has no springs to wear out, rust or lose tension • Air valve is stall-proof, leak-proof and pre-lubricated • Double-acting mechanisms ensure dependable low-surge operation with minimum air consumption • Large air passages allow unrestricted venting • Simplified maintenance • Modular design of pump tube allows for easy disassembly • Model #1901 is a ball-type medium pressure pump • Model #1904 is a shovel-foot plunger and bushing pump

9 in³/cycle

84335 Pump Tube

Oil

Steel

12:1

Air Operated Pump