Hypro/Pentair is no longer distributing the 9910 series of diaphragm pumps, components, and related parts; however, the pumps and repair parts are still available and will now feature factory labeling. 

**When you order this pump, you will receive the most current version, AR503-GR1-GCI** 

The Hypro/AR D503 pump is an anodized, three semi-hydraulic diaphragm, and medium pressure pump that ensures top-level performance from small to medium sized sprayers. This pump can produce 14.3 gpm and 580 psi. The Hypro/AR D503 pump is adaptable for male or female 1-3/8" splined shafts, 1" solid shafts, or gear reduction drive. This pump can be connected to a gas engine to spray herbicides, pesticides, and many other fluids.

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. Pumps include a pulsation dampener except for Models 9910-D303, D403, and D503s.

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• Max flow: 14.3 gpm
• Max pressure: 580 psi
• Max rpm: 550
• Includes 9910-RM40 pressure regulator and 9910-KIT1642 (AR1639) gearbox with 1" hollow shaft for mounting to 8-11 hp gas engines
• Port sizes: 1-1/4" HB inlet, (2) 1/2" HB outlet, 1" HB bypass
• Pump shaft rotation: CW and CCW
• Diaphragms: 3, semi-hydraulic, BlueFlex standard Desmopan® standard Buna available
• Housing: Anodized aluminum
• Max fluid temperature: 140°F
• Weight: 43 lbs