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The JST-SK range covers the larger three-phase 415V submersible sewage shredder pumps designed for industrial, commercial, and municipal wastewater containing significant rag and fibre content. Flow rates run from 400 LPM on the JST8SK up to 2,300 LPM on the JST110SK, with discharge outlets from 2″ through to 6″. High-head variants are available where long rising mains or significant lift is required.
The range includes the JST8SK (400 LPM, 14m, 2″), JST15SK (800 LPM, 17m, 3″), JST22SK (1,000 LPM, 20m, 3″), JST37SK (1,200 LPM, 25m, 4″), JST55SK (1,800 LPM, 19m, 4″), JST75SK (2,200 LPM, 22m, 4″), and JST110SK (2,300 LPM, 39m, 6″). Stainless steel SKSS variants are available for corrosive duties.
JST-SK pumps are the standard JS choice for pump stations handling municipal sewage with heavy rag content, where vortex impellers would clog repeatedly. Twin mechanical seals in a lubricated oil chamber give long continuous-duty life, and all models are guide-rail compatible with a coupling foot. Manual and Mac 3 automatic versions are supplied with 10 metres of power cable as standard.
If your questions have not been answered here, get in touch with our team for more information.
The JST-SK range includes the JST8SK, JST15SK, JST22SK, JST37SK, JST55SK, JST75SK, and JST110SK. Flow rates run from 400 LPM up to 2,300 LPM, with heads from 14m up to 39m on the JST110SK. All are 415V three-phase.
Modern wastewater contains far more rag and fibre content than older systems were designed for, primarily from wet wipes. Shredder pumps cut this material before it reaches the impeller, preventing the rag accumulation that causes vortex pumps to clog and trip. Most new pump stations now specify shredder pumps as standard for this reason.
The JS-SK pumps are single-phase 110V or 230V (the JS750SK and JS1500SK), suited to domestic and light commercial use. The JST-SK pumps are three-phase 415V across a much wider size range, suited to industrial and municipal duties with flows up to 2,300 LPM.
Yes. The shredder impeller is specifically designed to handle wet wipes, sanitary products, rags, and other fibrous material that would clog a standard sewage pump. The cutting action breaks the material down into smaller pieces that pass through the impeller and discharge without accumulation.
Absolutely! If you’re unsure which pump is the best fit for your application, our team is here to help. You can pop up to our live chat for instant support, or simply send your requirements and pump details to sales@tfpumps.com. One of our experts will quickly recommend the most suitable pump for your needs.
