GS Series Wet Prime Centrifugal Pumps

Technical Product Description:

The Franklin Electric GS Series Wet Prime Centrifugal Pumps are heavy-duty self-priming pumps designed for demanding solids-handling and wastewater applications. Franklin Electric states that the GS Series is ideal for lift stations, municipal sewer, and industrial wastewater duties, and positions the line as a cost-effective solution for high-head applications with high performance demands.  

Franklin publishes the GS Series in 3”, 4”, 6”, 8”, and 10” sizes, with maximum flow rates up to 3,450 GPM, maximum head up to 175 feet, and solids handling up to 3 inches. The pumps are available either as part of a complete pumping package or as standalone units.  

For durability and serviceability, Franklin highlights a double-lip seal with atmospheric drain for added bearing protection, plus a simple external shimless impeller adjustment that can be made from either the rotating assembly or the cover plate to help extend wear life and simplify tolerance adjustment. Franklin also notes a removable cover plate with grip handle and jack bolts to make maintenance easier.  

Franklin further states that the GS Series offers rotating assembly interchangeability and a consistent pump footprint compared with other manufacturer models, which can simplify replacement and package integration in the field. With its wet-prime self-priming design, solids-handling capability, and high-head performance, the GS Series is well suited for municipal, industrial, and wastewater pumping applications. The last sentence is an inference based on Franklin’s stated applications and published specifications.

Key Technical Features:

• Wet-prime self-priming centrifugal pump design.  
• Ideal for lift stations, municipal sewer, and industrial wastewater applications.  
• Available in 3”, 4”, 6”, 8”, and 10” sizes.  
• Maximum flow up to 3,450 GPM.  
• Maximum head up to 175 feet.  
• Solids handling capability up to 3 inches.  
• Double-lip seal with atmospheric drain for added bearing protection.  
• External shimless impeller adjustment for easier service and increased wear life.  
• Removable cover plate with grip handle and jack bolts for maintenance access. 
• Offered as a standalone pump or as part of a full pumping package.