The submersible pump is a centrifugal pump. Because all stages of the pump end (wet end) and the motor are joined and submerged in the water, it has a great advantage over other centrifugal pumps. There is no need to recirculate or generate drive water as there is with jet pumps, therefore, most of its energy goes toward “pushing” the water rather than fighting gravity and atmospheric pressure to draw water.



A.Y. McDonald offers a full line of no-lead brass submersible pumps built for years of trouble free operation, with high-efficiency impellers and diffusers. These submersibles offer peak capacity performance in 5, 7, 10, 15, 20, and 25 gallons per minute (GPM). Other features include no-lead discharge head with a built-in check valve, and stainless steel shaft and coupling. All No-Lead Pumps come with a 1 1/4” discharge and sizes range from 1/3 to 2 horsepower (HP). Two wire models up to 1 1/2 horsepower (HP) or three wire models up to 2 horsepower (HP).

• Discharge: Casting No-Lead Brass Alloy
• Cable Guard: Stainless steel cable guard protects motor leads. Angled top helps keep leads stationary when lowering and raising submersible pump.
• Diffuser: Polycarbonate durable corrosion and abrasion resistant. Designed for efficient performance and superior sand handling capability.
• Impeller: Glass Bead Acetal. This smooth and flexible material is precision engineered for maximum performance.
• Check Valve: Acetal check valve poppet and seal housing Buna-N O-ring and stainless steel washer head retention screw. Threaded for easy installation or removal. Working pressure of 400 PSI.
• Discharge Bearing: Rubber surrounding the stainless steel shaft provides superior wear resistance against the harshest conditions while maintaining shaft alignment. Self lubricating for long life.
• Polished Stainless Steel Shell: Heavy duty and threaded at both ends for easy field service.
• Shaft: 7/16” 300 series stainless steel hex design for positive impeller drive. Each shaft individually measured for straightness with strict tolerances.

21000 Series Spec Sheet