Rotary Airlock Valve

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  Drop-Through Rotary Airlock Valves

  NES Drop-Through Rotary Airlock Valves ensure precise material flow in pneumatic conveying and metering applications. Featuring a drop-through design, they allow gravity-assisted discharge while maintaining system pressure and preventing air loss. Available in cast iron or stainless steel (304/316) with 6” to 18” [150 mm to 450 mm] bore sizes, they support up to 15 psi differential pressure and 482°F [250°C] operating conditions, making them ideal for food, chemical, pharmaceutical, plastics, and bulk material handling industries.
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  Blow-Through Rotary Airlock Valves

  NES Blow-Through Rotary Airlock Valves boost pneumatic conveying efficiency with an integrated air-assist that improves discharge and flow consistency. Available in cast iron or stainless steel, these valves suit demanding environments across food, chemical, pharmaceutical, and plastics industries. Bore sizes range from 6” to 18” [150 mm to 450 mm], with six to ten-vane rotors for control.
  These robust valves handle up to 15 psi differential pressure and 482°F [250°C], making them ideal for high-flow material handling systems.
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  Drop-In ReplacementNASH Classic SC

  Nash SC Series Replacements: NES NC Series – Single Stage, Single Cone, Liquid Ring Vacuum Pumps, and Compressors

  NES Company is proud to offer our NC Series conical lobe design single stage liquid ring vacuum pumps and compressors. The 7.5-150 HP single stage liquid ring vacuum pumps have been designed to be drop-in replacements for classic Nash SC pumps. NES NC vacuum pumps and compressors are factory performance tested and include a 2-year warranty.

  We have directly interchangeable parts with the NASH Classic SC.
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  Drop-In ReplacementNASH Classic Vectra XL

  Nash XL Series Replacements: NES NX Series – Single Stage, Single Cone, Liquid Ring Vacuum Pumps, and Compressors

  Our NX Series are designed as drop-in replacements for the Nash classic XL / GL series vacuum pumps and compressors. The single cone liquid ring vacuum pump and compressor is designed to have only one moving part to induce maximum mechanical stability with maximum reliability. We offer versions with capacities ranging from 60-940 CFM up to 28” Hg of vacuum and 30 psig of compression.

  We have directly interchangeable parts with the NASH Classic Vectra XL.
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  Drop-In ReplacementNASH Classic AT

  Nash AT Series Replacements: NES NAT Series – Dual Stage, Dual Cone, Liquid Ring Vacuum Pumps

  NES Company is proud to offer our 20-150 HP NAT Series two stage vacuum pumps as an economical option for industrial applications. These vacuum pumps have been designed from the ground-up as exact replacements for classic Nash AT two stage vacuum pumps. These pumps also come with a 2-year warranty against manufacturer’s defects.

  We have directly interchangeable parts with the NASH Classic AT.
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  Drop-In ReplacementNASH Classic TCM/TC

  Nash TCM / TC Series Replacements: NES NTC Series – Dual Stage, Single Cone, Liquid Ring Vacuum Pumps

  NES Company Inc. is proud to offer our NTC Series Two Stage Single Cone Vacuum Pump as a drop-in replacement for the Nash classic TCM and TC series vacuum pumps. This series covers ranges of 10-150 HP and 70-2800 CFM, reaching up to 29” Hg of vacuum. All NES NTC two stage single cone vacuum pumps are factory performance tested and come with a 2 year warranty against manufacturer’s defects.

  We have directly interchangeable parts with the NASH Classic TCM/TC.
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  Drop-In ReplacementFlowserve SIHI LPH

  Flowserve SIHI LPH Series Replacements: NES NTS Series – Dual Stage, Port Plate, Liquid Ring Vacuum Pumps

  NES Company Inc. is proud to offer our NTS Series two stage 65-4200 CFM port plate liquid ring vacuum pumps. These pumps are designed as drop-in replacements of Flowserve SIHI LPH two-stage vacuum pumps with a low maintenance, simple and reliable design capable of handling a variety of gasses over a wide range of suction pressures. All NES NTS two-stage port-plate liquid ring vacuum pumps are factory performance tested and have a two-year warranty against manufacturer’s defects.

  We have directly interchangeable parts with the Flowserve SIHI LPH.
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  NSP Series – Dry Screw Vacuum Pumps

  Experience powerful performance with NES NSP Series Dry Screw Vacuum Pumps—engineered for zero carryover, and total process isolation. With variable pitch rotor design, these dry-running pumps deliver superior efficiency and thermal stability even under harsh chemical conditions. No sealing fluid, no compromise—just clean, precise, industrial vacuum performance at its best.