Hypro D503 Series


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Product Description

Hypro D503 Series Pumps

The 9910-D503 seeries 3 diaphragm, anodized aluminum pumps achieve up to 13.7 GPM (52 LPM) and 580 PSI (40 bar). This series includes models 9910-D503, 9910-D503GRGI and 9910-D503GRGI34.

Hypro medium pressure diaphragm pumps are recommended for spraying herbicides, pesticides, liquid fertilizers, and many other hard-to-handle fluids. Low-cost maintenance and almost wear-free operation make these pumps ideal for a wide variety of spraying jobs.

Pressure and output are designed for optimum performance of small to medium-sized sprayers. Hypro medium pressure diaphragm pumps can be adapted for male 1-3/8″ splined shaft, female 1-3/8″ splined shaft, 1″ solid shaft, or gear reduction drive options.

Performance Information:

♦ Max. flow: 13.7 GPM/52 LPM
♦ Max. pressure: 580 PSI/40 bar
♦ Max. rated speed: 550 RPM(D503); 3600 RPM (D503GRGI and D503GRGI34)
♦ Max. fluid temperature: 140°F/60°C


♦ Port sizes: 1-1⁄4″ (M)HB inlet, 3⁄4″ NPT outlet
♦ Shaft: flanged adapter (D503); 1″ hollow shaft for gas-engine mount (D503GRGI)
♦ Pump shaft rotation: CW and CCW
♦ Housing: anodized aluminum
♦ Diaphragms: 3, semi-hydraulic
♦ Mounting base included
♦ Crankcase Oil Capacity: 18 oz.


Option Model Description
A D503 Shaft flanged for shaft kit
B D503-B As above, but with Buna-N diaphragms
C D503GRGI D503 with 1″ hollow shaft, assembled gear box, and control unit RM40 for mounting on 8 HP gas engine.
D D503GRGI34 As above, but with 3/4″ hollow shaft for mounting on 5-6.5 HP gas engine.

Additional Information

Weight 28 lbs

Option A, Option B, Option C, Option D