• 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 extreme pressure. All wearing parts are tough, heat-treated steel.
• Plunger, bushing and air valve mating parts are micro-lapped to close tolerances. Prevents by-passing of lubricant and bleeding of air. Eliminates need to replace washers and packings.
• Trouble-free, positive performance. Air motor operation has no springs to 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.

Ball Type Medium Pressure Pumps

Model	Ratio	Pump Tube Type	Air Motor	Diameter in/mm	Pump Tube	Material Outlet**
1931	4:1	55 gal	82737	2 1/2" / 57	82790	3/4" NPTF
1952	6:1	55 gal	82895	4" / 78	82790	3/4" NPTF
1901	12:1	55 gal	82730	4 1/4" / 108	82790	3/4" NPTF

Medium Pressure Stub Pumps

Model	Ratio	Pump Tube Type	Air Motor	Diameter in/mm	Pump Tube	Material Outlet**
1940	4:1	stub	82737	2 1/2 / 57	82790	3/4" NPTF
1951	6:1	stub	82895	3 / 76	82790	3/4" NPTF
1914	12:1	stub	82730	4 1/4 / 108	82790	3/4" NPTF

Shovel Type Medium Pressure Pumps

Model	Ratio	Pump Tube Type	Air Motor	Diameter in/mm	Pump Tube	Material Outlet**
1932	8:1	55 gal	82737	2 1/2" / 57	82791	3/4" NPTF
1933	13:1	55 gal	82737	2 1/2" / 57	82792	3/4" NPTF
1902*	24:1	55 gal	82730	4 1/4" / 108	82791	3/4" NPTF

* Not to be used with meters.
** All PowerMaster pumps include 12018, 3/4" NPTF(m) x 1/2" NPTF(f) bushing in the material outlet.
NOTE: Model number with “-1” indicates model including bung bushing.
Model number with “-2” indicates model including drum cover.

Shovel Foot Pumps—Plunger & Bushing

Model	Ratio	Pump Tube Type	Air Motor	Diameter in/mm	Pump Tube	Material Outlet**
1935	50:1	55 gal	82737	2 1/2 /57	83665	3/4" NPTF
1903	40:1	55 gal	84730	4 1/4 / 108	82792	3/4" NPTF
1910	50:1	55 gal	84730	4 1/4 / 108	83271	3/4" NPTF
1904	75:1	55 gal	84730	4 1/4 / 108	82793	3/4" NPTF
1907	40:1	16 gal	84730	4 1/4 / 108	82841	3/4" NPTF
1908	75:1	16 gal	84730	4 1/4 / 108	82883	3/4" NPTF

*All PowerMaster pumps include 12018 3/4" NPTF(m) x 1/2" NPTF(f) bushing in the material outlet.