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Roller Pumps (positive displacement)

Hypro roller pumps are the number one all-around choiceby farmers throughout the world.The rollers (from 4 to 8, depending on the model) revolve inside the pump housing to force the spray solution through the outlet to the nozzle.Roller pumps have a low initial cost and are extremely versatile.They operate efficiently at PTO speeds of 540 and 1000 rpm and have a wide pressure range of up to 300 psi and flow rates of 2 to 74 gpm. Roller pumps are self priming and easily adapt to PTO or gas engine drives.Specific seal, roller and casting materials can be selected for compatibility with certain herbicides, pesticides, fungicides and fertilizers.

Piston Pumps (positive displacement)

Piston pumps are not unlike an engine.That is, they have a shaft, pistons and “intake”and “exhaust”valves.On the down-stroke, the inlet valve opens, filling the chamber with solution.On the up-stroke, the outlet valve opens, and the piston forces the solution to the nozzle.Piston pumps deliver relatively low flow rate (up to 10 gpm) at high pressure (up to 400 psi).The replaceable piston cups can be of leather, fabric or Buna-N rubber, depending on the type of solution to be sprayed.They can be driven by 540 rpm PTO, gas engine or electric motor.Their low volume/high pressure capability permits use in general spraying as well as task-oriented applications such as spraying fence rows and ditches, and hydrostatic testing.

Hypro Pumps Identification Coding

Hypro uses serialized labeling to enable users to precisely identify the pump when ordering parts or requesting warranty service.Following is an example. First line: Model Number Second line: Serial Number First & second digit: year (03=2003)

Diaphragm Pumps (positive displacement)

Third through fifth digits: Because of their design, diaphragm pumps provide excellent handling of abrasive and corrosive materials. The pumping cylinders (from 2 to 6) are separated from the piston chambers (Hypro’s are oil-filled) by a synthetic diaphragm.This keeps the spray solution from contacting and corroding the internal pump components.Diaphragm pumps are compact, self-priming and producemedium-to-high pressures (275 to 725 psi) with flow rates of 3.5 to 66 gpm.Driven by 540 rpm PTO, gas engine or DC motor, diaphragm pumps are used for a variety ofagricultural, horticultural and pest control spraying applications. consecutive day of the year the pump was manufactured. Sixth digit: shift the pump was built on. Seventh through tenth digits: consecutive pump number built on the shift. 3