Vane, Rietschle, VTN 10, Rietschle, Dry Rotary Vane, Part# 513455

Overhaul Kit, Pfeiffer DUO 255M

Name: Overhaul Kit, Pfeiffer DUO 255M
Brand: Pfeiffer
SKU: 23499
Availability: InStock

$2,329.60

This is the Pfeiffer Part# PMK028 Major Overhaul Kit for the DUO 255M (Index C) vacuum pump. This complete kit includes everything you need for a full pump rebuild: vanes, springs, seals, O-rings, valves, bearings, gaskets, coupling, sight glass, and more. Following Pfeiffer’s recommended 4-year maintenance schedule, this kit restores your pump to like-new condition.

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Your Pfeiffer DUO 255M works hard every day. After years of service, parts wear out. Vanes get smaller. Springs lose their tension. Seals become hard and brittle. Valves stop sealing properly.

Pfeiffer recommends a major overhaul every 4 years. That means taking the pump completely apart. Cleaning everything. And replacing all the wearable parts.

That is exactly what this kit is for. This is the Pfeiffer Major Overhaul Kit, Part# PMK028. It is made specifically for the DUO 255M (Index C) pump.

This kit includes nearly every wearable part your pump needs. Here is the complete list of what you get:

Vanes & Springs (The Heart of the Pump)

Part Number	Description	Quantity
230094	Vane for DUO 255M (Index C)	2
230095	Vane for DUO 250A	2
490075	Vane Spring	4
490076	Spring, DUO 255M	2
490077	Spring, 54 mm Long	1

Seals & O-Rings (Stop All Leaks)

Part Number	Description	Quantity
310152	Shaft Seal, Single Lip	2
300167	Sight Glass Gasket	2
300214	Ring Gasket	2
300216	Sealing Ring (Dowty seal)	1
4070088	O-ring, 6 x 2.2 mm – Viton	2
PL23970149	O-ring, 8 x 2 mm – Viton	1
4070166	O-ring, 10 x 2.5 mm – Viton	1
4070259	O-ring, 15 x 2.5 mm – Viton	2
320177	O-ring, 18 x 2.0 mm – Viton	1
4070333	O-ring, 19 x 2.5 mm – Viton	1
4070420	O-ring, 24 x 2.5 mm – Viton	4
02124025	O-ring, 28 x 5 mm – Viton	1
320524	O-ring, 32 x 2.5 mm – Viton	1
4070621	O-ring, 38 x 3.0 mm – Viton	2
320533	O-ring, 47 x 2.5 mm – Viton	1
PL23970129	O-ring, 65 x 5 mm – Viton	2
320538	O-ring, 85 x 5 mm – Viton	1
02106062	O-ring, 107.32 x 5.33 mm – Viton	4
PL23970419	O-ring, 125 x 5 mm – Viton	3
48656700	O-ring, 140 x 5 mm – Viton	1
320534	O-ring, 180 x 5 mm – Viton	1
320535	O-ring, 500 x 3 mm – Viton	1

Valves & Plates (Control the Flow)

Part Number	Description	Quantity
580053	Exhaust Valve	1
580054	Stamp Valve	2
390028	Valve Seat	2
380049	Valve Plate, DUO250/255	1
380052	Spring Plate, DUO 255M	4
390024	Safety Valve Buffer	1

Bearings & Mechanical Parts (Smooth Operation)

Part Number	Description	Quantity
330094	Needle Bearing	4
250031	Steel Sleeve	1
580044	Hydraulic Piston	1
520036	Supporting Ring	1
440056	Spacer, DUO 255M	1
220006	Steel Key (60 mm Long)	1
220007	Special Steel Key	1