J-Class Tri-Seal Series Submersible Well Pump

Technical Product Description:

The Franklin Electric J-Class Tri-Seal Series Submersible Well Pump is a 4-inch residential-duty submersible well pump designed for dependable water delivery in demanding well conditions. Franklin Electric states that the standard J-Class Tri-Seal pump features the TRI-SEAL floating stage system, which improves efficiency and helps protect against wear when pumping abrasives such as sand.  

Franklin also lists the J-Class Tri-Seal Series within its TRI-SEAL 4-inch submersible well pump family in the residential-duty lineup. The official overview highlights 300 series stainless steel hub floats that maintain a positive seal, a phenolic washer for down-thrust protection, an acetal impeller for high efficiency and abrasion resistance, and a modified PPO diffuser and disc for proven abrasion resistance. The pump also uses a floating stage design that allows the impeller to float independently, along with a removable, spring-loaded check valve.  

Published Franklin model pages show that the J-Class Tri-Seal Series is offered in multiple configurations, including 2-wire thermoplastic, 3-wire thermoplastic, 2-wire stainless steel, 3-wire stainless steel, and stainless steel pump-end versions, depending on the exact model selected. Franklin’s published examples also show 10 GPM, 15 GPM, 20 GPM, and 25 GPM configurations, with listed examples such as 10JS07S4-PE at 10 GPM and 25JS2S4-PE at 25 GPM.  

Franklin lists a maximum water temperature of 120°F / 49°C for the series overview. With its abrasion-resistant stage materials, 4-inch form factor, and multiple wiring and construction options, the J-Class Tri-Seal Series is a practical choice for residential and light-duty water well applications where sand handling, durability, and efficient deep-well performance are important. The final sentence is an inference based on Franklin’s residential-duty category and published design features. 

Key Technical Features:

• 4-inch submersible well pump for residential-duty applications.  
• TRI-SEAL floating stage system for improved efficiency.  
• Designed to protect against wear when pumping abrasives such as sand.  
• 300 series stainless steel hub floats maintain a positive seal.  
• Phenolic washer for down-thrust protection.  
• Acetal impeller and modified PPO diffuser/disc for abrasion resistance and efficiency.  
• Floating stage design with removable spring-loaded check valve.  
• Available in 2-wire, 3-wire, thermoplastic, stainless steel, and pump-end configurations depending on model.  
• Published examples include 10 GPM, 15 GPM, 20 GPM, and 25 GPM versions. 
• Maximum water temperature: 120°F / 49°C.