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Performance Curves

Since 1955 Wilden Pump & Engineering, LLC., the world's largest manufacturer & market leader of air-operated double-diaphragm pumps, and has been providing industry experts with the most reliable pumps on the market. Wilden pumps are self-priming, can handle viscous and abrasive products, can run dry without damage, and are capable of passing up to 152mm (6") compressible solids. Wilden pumps do not employ costly motors, variable speed drives, by-pass plumbing or mechanical trip rods. Please see the matrix below for a comparison of the Wilden AODDP versus Rotary and Centrifugal pumps:

	SOLIDS PASSAGE	SHEAR SENSITIVITY	ABRASIVES HANDLING	SOLVENTS HANDLING	DRY PRIMING	VISCOUS FLUIDS HANDLING	MAINTENANCE COSTS
Wilden Pumps	A	A	A	A	A	A	A
Vane Pumps	D	D	D	A	B	C	C
Internal Gear Pumps	D	D	B	B	C	A	D
External Gear Pumps	D	D	D	B	C	A	D
Lobe Pumps	A	C	B	C	C	A	D
Centrifugal Pumps	D	D	B	B	C	D	B
Progressive Cavity Pumps	D	C	A	B	A	A	D
Piston/Plunger Pumps	C	D	B	C	A	A	D