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Overhaul Kit, Pfeiffer DUO 255M

PMK028
EUR 2,832.00
Used on Pfeiffer DUO 255M (Index C)

For complete kit content details see bill of materials below

Part number alternatives: PKE02051-T
Part Number Description Quantity Qty in stock
PL23970419 O-ring, 125 x 5 mm - Viton, Part# PL23970419 3 11
250031 Sleeve, Steel, DUO 250/255 & UNO 250, Pfeiffer, Part# 250031 1 6
560014 Sieve, Cylinder, Pfeiffer, DUO, DUO250A, DUO 255M (Index C), Part# 560014 1 1
580044 Piston, Hydraulic, Pfeiffer, DUO, DUO 125, DUO 255M (Index C), Part# 580044 1 12
700073 Filter, Star shaped Screen, Pfeiffer, DUO, DUO120A, Part# 700073 2 1
580053 Valve Exhaust, 120A, 250A, 255M, Pfeiffer, DUO, UNO, Part# 580053 1 4
580054 Valve, Stamp, Pfeiffer, DUO, DUO250A, DUO255M(IndexC), DUO120A, Part# 580054 2 4
230094 Vane, Pfeiffer, DUO, DUO255M(Index), Part# 230094 2 5
230095 Vane, Pfeiffer, DUO, DUO250A, Part# 230095 2 8
390024 Buffer, Valve, Safety, Pfeiffer, DUO, Part# 390024 1 2
330094 Needle Bearing, Pfeiffer, DUO, Part# 330094 4 0
700074 Filter, Pleated, Rubber Housing, DUO125, Pfeiffer, DUO, Part# 700074 1 0
220006 Key, Steel, (60 mm Long), Pfeiffer, DUO, Part# 220006 1 0
490077 Spring, 54 mm Long, DUO 255m, Pfeiffer, DUO, Part# 490077 1 0
490076 Spring, DUO 255m, Pfeiffer, DUO, Part# 490076 2 0
490075 Spring, Vane, DUO 250A/255M, Pfeiffer, Part# 490075 4 14
380052 Plate, Spring, Duo 255M, Pfeiffer, DUO, Part# 380052 4 0
0512000116 Spider Coupling, Rotex 55 - Part # 0512000116 1 2
320535 O-ring, 500x 3 mm - Viton, Part# 320535 1 0
500023 Pfeiffer Sight Glass, Part# 500023 1 2
320534 O-ring, 180 x 5 mm - Viton, Part# 320534 1 0
48656700 O-ring, 140 x 5 mm - Viton, Part# 48656700 1 9
02106062 O-ring, 107.32 x 5.33mm - Viton, Part# 02106062 4 27
300214 Gasket, ring, Pfeiffer, DUO, UNO, DUO250A, DUO255M(IndexC), UNO250A, Part# 300214 2 15
300167 Sight Glass Gasket, Pfeiffer, UNO, DUO, Part# 300167 2 14
310152 Seal, Shaft, Single Lip, Pfeiffer, DUO, UNO, Part# 310152 2 12
4070088 O-ring, 6 x 2.2 mm - Viton, Part# 4070088 2 34
PL23970149 O-ring, 8 x 2 mm - Viton, Part# PL23970149 1 17
4070166 O-ring, 10 x 2.5mm - Viton, Part# 4070166 1 5
4070259 O-ring, 15 x 2.5 mm - Viton, Part# 4070259 2 34
390028 Seat, Valve, Pfeiffer, DUO, Part# 390028 2 0
380049 Plate, Valve, DUO250/255-Pfeiffer DUO, Part# 380049 1 0
520036 Ring Supporting-Pfeiffer DUO, Part# 520036 1 1
440056 Spacer, DUO 255M, Pfeiffer, DUO, Part# 440056 1 0
300216 Ring, Sealing, FKM, 10. 4x16x2 (Dowty seal), Pfeiffer, DUO, Part# 300216 1 0
220007 Key, Steel, Special, Pfeiffer, DUO, Part# 220007 1 0
320177 O-ring, 18 x 2.0 mm - Viton, Part# 320177 1 6
4070333 O-ring, 19 x 2.5 mm - Viton, Part# 4070333 1 8
4070420 O-ring, 24 x 2.5mm - Viton, Part# 4070420 4 20
320524 O-ring, 32 x 2.5 mm - Viton, Part# 320524 1 0
4070621 O-ring, 38 x 3.0mm - Viton, Part# 4070621 2 8
02124025 O-ring, 28 x 5 mm - Viton, Part# 02124025 1 7
320533 O-ring, 47 x 2.5 mm - Viton, Part# 320533 1 0
PL23970129 O-Ring,Viton,65 X 5 MM Part# PL23970129 2 9
320538 O-ring, 85 X 5mm - Viton, Part# 320538 1 4

General product classifications

Part Number Cross-Reference PKE02051-T
Compatible Brands Pfeiffer
Family DUO
Compatible Pump Models DUO255M(IndexC)
Category Repair Kits
Subcategory Overhaul Kits
Country of origin US

Pfeiffer - Oil Sealed, Two Stage Rotary Vane Pumps

  • DUO 120A – standard version
  • DUO 125 (Index B) – standard version
  • DUO 125M – magnetic coupling
  • UNO/DUO 250A – standard version
  • DUO 255M (Index C)  – magnetic coupling

* MC version – Corrosive gas application (with magnetic coupling)

Oil Change:

The maintenance schedule of operating fluid depends on application and location of pump. The oil must be changed if:

  • Ultimate pressure is no longer attainable
  • Oil appears contaminated, milky, or cloudy when viewed through sight glass
  • Oil is discolored

Oil Capacity:

  • DUO 120 - 13 liter
  • DUO 125 - 14 liter
  • UNO 250 - 30 liter
  • DUO 250 - 23 liter
  • DUO 255 - 25 liter

Maintenance Intervals:

Daily:

  • Check operating fluid levels
  • Check for leaks

As required (at least annually):

  • Change operating fluid
  • Disassemble casing, sight glass and pumping system and clean casing outside (without cleaning agent)
  • Clean gas ballast valve & silencer
  • Clean motor fan cap

As required (at least every 2 years):

  • Disassemble the pump, clean & exchange seal and wearing parts

As required (at least every 4 years):

  • Carry out work in accordance with maintenance and additionally
    • Change vanes
    • Change valves, springs, and sight glass
    • Change silencer nozzle
    • Check coupling and exchange is necessary