Grundfos 300S SP 6 in Submersible Pump End

The Grundfos 300S is the 300 GPM class of the SP 6 in submersible range, sold here as the pump end alone: stainless steel chambers and impellers with a built-in check valve, ready to mount on a submersible motor. Pump and impellers are AISI 304 stainless steel. Use it to rebuild an SP installation on a sound motor, or to build a pump around a motor you already have; the complete 300S pumps with Grundfos motors are listed separately.

Every 300S pump end has a Grundfos motor flange. Match the motor horsepower and diameter in the selector; send us the motor model and we will confirm the fit.

24 months from date of installation, but not more than 30 months from date of manufacture. In Grundfos's words, products are “warranted to the original user only to be free of defects in material and workmanship”; the full terms are in the installation and operating instructions on the Data Sheet tab.

Each pump end builds one pump for one well. For a duty/standby pair, or a flow outside the 300S range, send us the duty: the SP 6 in pump ends run from 90 to 300 GPM, and we will size the set with you.

The model code reads flow class, horsepower and stages: 300S300-7 is the 300S for a 30 HP motor with 7 stages. In the selector, choose the motor horsepower and diameter first, then the model; each model shows the head it adds at its rated flow. Order by part number; every build is in the Models & Ratings table.

• Letters after the stage count (for example -4AB) mark builds with reduced-diameter impellers; the head figure for each build is in the selector and the Models & Ratings table.
• Several models come in more than one motor size under different part numbers; the selector shows the motor size with the horsepower.