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Interchangeable Nash Vacuum Pump & Compressor Spare Parts & Accessories

NES Company, Inc. competitively offers Nash replacement spare parts including cones, port plates, rotor shaft assemblies, heads, bodies, bearings, motors, couplings, gears, heat exchangers, control panels, sensors, valves and all other replacement parts for liquid ring vacuum pumps and compressors. Our portfolio encompasses direct part interchangeability for the Nash Classic 904 / 905, AT, CL, SC, TC, and Premier Series, as well as the Siemens L200 2BE Series.

About NES Spare Parts & Accessories

NES Company Inc has distributed spare parts and accessories for liquid ring vacuum pumps and compressors for decades. We offer drop-in replacements for Nash Classic series vacuum pumps and compressors with direct internal and external part interchangeability. NES is determined to hold the reputation of quality, responsiveness, and great pricing that we pride ourselves in. Speak with an expert today to learn about the spare part solutions NES Company can offer to get you out of the bind.


NES Company, Inc. provides quality through:

  • Drawing Approval at PO
  • API-Approved Foundry for Spare Parts
  • Mirror Finish for Port Plates
  • Rotor Shaft Assembly-balanced Standard ISO G2.5
  • Shaft is ultrasound tested
  • Pictures & Video of testing
  • Chemical metallurgy report on each part
  • Testing Standard PNEUROP, Nash Orifice Method
  • Products conform to HEI Standard
NL Series - Single Stage/Dual Cone Pumps/Compressors

NL Series

Single Stage / Cast Iron Dual Cone Liquid Ring Vacuum Pumps

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NES Model Drop-In Nash Model
NL-401 CL-401
NL-402 CL-402
NL-403 CL-403
NL-701 CL-701
NL-702 CL-702
NL-703 CL-703
NL-1001 CL-1001
NL-1002 CL-1002
NL-1003 CL-1003
NL-1501 CL-1501
NL-1502 CL-1502
NL-2001 CL-2001
NL-2002 CL-2002
NL-2003 CL-2003
NL-3001 CL-3001
NL-3002 CL-3002
NL-3003 CL-3003
NL-4001 CL-4001
NL-4002 CL-4002
NL-4003 CL-4003
NL-6001 CL-6001
NL-6002 CL-6002
NL-6003 CL-6003
NL-9001 CL-9001
NL-9002 CL-9002
NL-9003 CL-9003
NL-9001G CL-9001G
NL-9002G CL-9002G
NL-9003G CL-9003G
NL-14001 CL-14001
NL-14002 CL-14002
NL-14003 CL-14003
NL-14001G CL-14001G
NL-14002G CL-14002G
NL-14003G CL-14003G
N904 Nash 904 905 Replacement Pumps

N904 Series

Liquid Ring Vacuum Pump – Large Capacity

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NES Model Drop-In NASH Model
N904 L1 904 / 905 L1
N904 L2 904 / 905 L2
N904 M1 904 / 905 M1
N904 M2 904 / 905 M2
N904 P1 904 / 905 P1
N904 P2 904 / 905 P2
N904 P3 904 / 905 P3
N904 R1 904 / 905 R1
N904 R2 904 / 905 R2
N904 R3 904 / 905 R3
N904 S1 904 / 905 S1
N904 S2 904 / 905 S2
N904 S3 904 / 905 S3
N904 T1 904 / 905 T1
N904 T2 904 / 905 T2
N904 T3 904 / 905 T3
N904 U1 904 / 905 U1
N904 U2 904 / 905 U2
NTC Series Two State Vacuum Pump

NTC Series

Liquid Ring Vacuum Pump – Two Stage

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NES Model Drop-In Nash Model
NTC-5 TC-5
NTC-7 TC-7
NTC-11 TC-11
nbe series Nash Siemens L200 2BE Single Stage Liquid Ring Vacuum Pumps & Compressors

NBE Series

Liquid Ring Vacuum Pump / Compressor – Medium Capacity

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NES Model Drop-In NASH/Siemens Model
NBE 1-101 L200 2BE 1-101
NBE 1-102 L200 2BE 1-102
NBE 1-103 L200 2BE 1-103
NBE 1-151 L200 2BE 1-151
NBE 1-152 L200 2BE 1-152
NBE 1-153 L200 2BE 1-153
NBE 1-201 L200 2BE 1-201
NBE 1-202 L200 2BE 1-202
NBE 1-203 L200 2BE 1-203
NBE 1-251 L200 2BE 1-251
NBE 1-252 L200 2BE 1-252
NBE 1-253 L200 2BE 1-253
NBE 1-303 L200 2BE 1-303
NBE 1-305/306 L200 2BE 1-305/306
NBE 1-353 L200 2BE 1-353
NBE 1-355/356 L200 2BE 1-355/356
NBE 1-403 L200 2BE 1-403
NBE 1-405/406 L200 2BE 1-405/406
NBE 1-503 L200 2BE 1-503
NBE 1-505/506 L200 2BE 1-505/506
NBE 1-603 L200 2BE 1-603
NBE 1-605/606 L200 2BE 1-605/606
NBE 1-653 L200 2BE 1-653
NBE 1-655/656 L200 2BE 1-655/656
NBE 1-703 L200 2BE 1-703
NBE 1-705/706 L200 2BE 1-705/706
NBE 3/4-300/306 L200 2BE 3/4-300/306
NBE 3/4-320/326 L200 2BE 3/4-320/326
NBE 3/4-400/406 L200 2BE 3/4-400/406
NBE 3/4-420/426 L200 2BE 3/4-420/426
NBE 3/4-500/506 L200 2BE 3/4-500/506
NBE 3/4-520/526 L200 2BE 3/4-520/526
NBE 3/4-600/606 L200 2BE 3/4-600/606
NBE 3/4-620/626 L200 2BE 3/4-620/626
NBE 3/4-670/676 L200 2BE 3/4-670/676
NBE 3/4-720/726 L200 2BE 3/4-720/726
NAT Nash AT Drop In Replacement

NAT Series

Liquid Ring Vacuum Pumps – Two-Stage Dual Cone

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NES Model Drop-In Nash Model
NAT-704 AT-704
NAT-706 AT-706
NAT-1004 AT-1004
NAT-1006 AT-1006
NAT-2004 AT-2004
NAT-2006 AT-2006
NAT-3004 AT-3004
NAT-3006 AT-3006
NC Series - Single Stage/Single Cone Pumps/Compressors

NC Series

Liquid Ring Vacuum Pump – Medium Capacity

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NES Model Drop-In Nash Model
NC-2 SC-2
NC-3 SC-3
NC-4 SC-4
NC-5 SC-5
NC-6 SC-6
NC-7 SC-7
NC-9 SC-9
NC-10 SC-10
NC-11 SC-11
NP Replacement for Nash Premier Series

NP Series

Single Stage Liquid Ring Vacuum Pumps – High Capacity

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NES Model Drop-In Nash Model
NP-2160 Premier 2160
NP-2200 Premier 2200


NES Repair Policy for Nash and Somarakis Liquid Ring Pump and Compressors

Besides spare parts distribution, NES Company has proudly performed our repairs for over 30 years, which have proven the test of time as our 904 and CL 9003 have lasted 28 years after completion of repair. All our repairs are made in America, and all of our parts and labor are imperial.

Repair Protocol

NES Company performs repairs on all Nash and Somarakis pump units. No matter what pump we tare, an inspection is completed, and an inspection report is documented. The inspection covers critical tolerances and dimensions per factory specifications, and a quote is generated with pictures and a Bill Of Materials for the repair. The individual parts of the pump are all sandblasted or pressure cleaned, and the repair process begins. The specifics of the procedure depend on the building material of the pump. Repairs are available for the assembly, body, heads, cones, shaft, or rotor, depending on the need.

Pump assembly repair procedure is the same for all pumps. The assembly is examined to confirm that the correct parts had been used to construct the pump, including but not limited to bearings, lip seals, and check valves. New replacements are purchased and assembled according to OEM specifications.

For all pumps, the body end fittings and compression areas are examined to confirm proper sizing. For cast iron, the fittings are pre-machined to accept stainless steel shroud rings. The rings are welded and the fittings are machined to OEM dimensions. The compression area is welded with nickel wire when necessary and machined to OEM specifications. For stainless steel, the body internals are pre-machined to accept a stainless-steel plate, rolled to size, and shroud fit rings. The rings are welded in place, the plate is welded to the internals, and the body is machined to OEM dimensions.

All pump heads are checked in their critical areas for proper sizing and concentricity. Bearing bores and stuffing boxes are sleeved and machined to size. Worn head faces are welded with nickel wire and machined to OEM dimensions. For stainless steel, the head faces are pre-machined to accept the stainless-steel plate that is rolled to fit the face. Applicable areas are welded, and the rest is attached with stainless steel countersunk screws.

All pump cone repair begins with machining the cone tapers outer diameter of the cone tapers. For cast iron, the outer diameter is machined to alleviate wear and eccentricity. For stainless steel, it is machined to accept a quarter-inch thick stainless-steel skin. The skin is welded onto the worn cone, the porting is cut, and it is machined to size. All pump cone bolting flanges are machined as needed to their true mounting surfaces.

Pump shaft repair begins with assessing wear in the bearing journals, lip seals, and packing areas. If the wear is significant, the areas are sleeved and machined to size.

Pump rotor repair varies drastically depending on the material. For cast iron, blade tip erosion is repaired first. For stainless steel-clad pumps, the outer diameter of the rotor shrouds is machined for stainless steel rings. The rings are welded on and machined according to OEM dimensions, and then the rotor vane tips and buckets are repaired. In all pumps, rotor tapers are pre-machined for nickel welding as a method of dimension correction and machined according to OEM dimensions. The shaft is reinstalled into the rotor, and the shaft assembly is correctly aligned so that all fittings are concentric. The repair ends with rotor balancing when necessary.

If the pump or compressor has mechanical seals, we send the mechanical seals for refurbishing at a nearby location.

NES Company boasts a no-shortcuts policy: no epoxy or metalizing spray is used to build dimensions. In addition to this, we offer a 98% performance warranty on a new pump compared to that either from Nash or Somarakis. NES Company has a two-year warranty against manufacturing defects on our rebuilds. NES company also performs fiberscope inspection and preventive maintenance schedules.

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