Hypro D503 and Hypro D503GRGI

The Hypro D503 & Hypro D503GRGI are medium pressure diaphragm pumps. The GRGI version is ready to be mounted on a gas engine with a 1" keyed shaft. The 9910-D503GRGI3/4 is for gas engines with a 3/4" shaft. It is recommended that you use 8 hp or greater with this pump, that would have a 1" shaft.

This is an excellent pump and can be used for landscaping, agricultural applications. Because it has a pumping capacity of 15 gallons per minute, it would work well in medium height tree spraying, up to about 60 feet.

• 15 gpm capacity.
• Maximum pressure is 580 psi.
• Maximum rated speed is 550 rpm.
• Three diaphragms, semi-hydraulic.
• Shaft: flanged adapter.
• Port sizes; 1 1/4" (M) hose barb inlet, 3/4" NPT outlet.
• Housing: anodized aluminum.
• Mounting base: included.
• Weight: 28 lbs.
• Pump shaft rotation: CW and CCW.
• D503GRGI- - - 3 diaphragm pump - assembled with gearbox 9910-KIT1642 and control 9910-RM40 for mounting on 8 hp gas engines. Max. gpm is 15.0; max. psi 580; max rpm is 3600.

Another common use of the Hypro D503 pump is for pressure testing pipes and sewers. Hydrostatic test pump

If your D503 has mixed oil (because the oil has turned milky grey in color and you do not have the same pumping ability) buy the repair kit. See Below:

Rittenhouse Newsletters

Hort Pro Page

Shipping Information

Exchange Rates

Media Information

Company History

Earn Aeroplan Miles on every purchase at Rittenhouse!

SALE! - Quietaire 18 inch Evaporative Cooling Fan ONLY ONE! Reduce the air temperature up to 26 degrees F. Cools up to 900 sq. ft.

Firefighting Pump Kits with Koshin Pumps Four kits available depending on length of Fire Attack Hose and type of valve needed

Kochek Firefighting and Irrigation Nozzles Aluminum fire nozzles with either national pipe straight hose thread or garden hose thread

Mosquito Eliminator Mosquito Eliminator uses Black Lighting and a special sticky surface.

True Blue Lake and Pond Dye True Blue is a non-toxic, environmentally friendly, water soluble dye formulated to reduce sunlight penetration and impart a natural blue colour when applied to ponds, lakes and fountains.

Combat String Algae with Pond Balance For a healthy and beautiful pond, use Pond Balance to combat string algae. Not temperature sensitive - will work at any water temperature.