Two-Stage Port Plate Liquid Ring Vacuum Pumps   We proudly offers our Two-Stage Liquid Ring Vacuum Pumps as drop-in replacements for select models from the Sterling/ Flowserve SIHI LPH Series dual-stage port plate liquid ring vacuum pumps.  

The NTS Series ranges from 65 to 4200 CFM, widening the possibilities for quick or large capacity pumping at deep vacuum levels. These pumps generate up to 28.9 inches Hg in vacuum, perfect for applications where the higher end of the rough vacuum spectrum is required without any considerable sacrifice in capacity or service life.

This makes the NTS Series a popular choice for vacuum drying, degassing, papermaking, evaporation, distillation, textile manufacturing, vacuum filtration, and power generation applications among our loyal clientele. Contact us today to see how NES can streamline your process with our competitively priced NTS Series liquid ring vacuum pumps!



Rugged Build: The NTS Series is standardly constructed in cast iron. Optional Stainless Steel 304 or 316 construction is also available for upgraded corrosion resistance. There are few moving parts with no metal-to-metal contact. The NTS Series vacuum pumps often last for years with the proper maintenance, operation, and care.  

Mechanical Seals Available: Optional single or double-cartridge mechanical seals are available, creating more secure seals and more consistent vacuum with less seal fluid leakage to cut operational costs.  

Increased Vacuum Capabilities: The NTS Series is a two-stage liquid ring vacuum unit that is capable of reaching 28.9” HgV for applications that require deeper vacuum in a liquid ring vacuum pump.  

One Year Warranty: We are confident in our ability to serve consistent quality. We offer a one-year warranty against manufacturing defects to build trust and peace of mind with our valued clients.  

Drop-In Replacement: The NTS Series models 110-600 are drop-in replacements for select models of the Sterling SIHI LPH Series two-stage liquid ring vacuum pumps, as listed above. NTS models 800-4200 are functional replacements with similar footprint and dimensions to the LPH Series equivalents.   Contact us to replace an old LPH two-stage unit, or to upgrade an existing process with our efficient and robust NTS Series vacuum pump units.