This is the Pfeiffer Part# 380049 Valve Plate. It is a replacement part used on Pfeiffer DUO250A and DUO255M (Index C) vacuum pumps . You will also find this valve plate included inside major overhaul kits for these pump models . Keep your pump’s valve system working right with this direct-fit part.
10 in stock
10 in stock
This is the Pfeiffer Part# PSK027 Seal Kit for the DUO 250A vacuum pump. This comprehensive kit includes O-rings, shaft seals, gaskets, and valve seats. Designed specifically for the DUO 250A, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
10 in stock
This Cylinder Sieve (Part #560014) is a fundamental filtration component for your Pfeiffer DUO vacuum pump . Its job is to trap debris and contaminants. This keeps your pump clean and running efficiently. A clean pump means better vacuum pressure and a longer pump life. This sieve is designed for the Pfeiffer DUO 250A, DUO 255M (Index C), DUO 120A, and DUO 125 pump models . If you are rebuilding your pump, this is a part you will need. In fact, it is included in major overhaul kits for these pumps
10 in stock
10 in stock
This Rotex 55 spider coupling (Part # 0512000116) is a elastomeric insert designed for KTR Rotex Size 55 jaw couplings . Made from high-strength T-PUR material with 92 Shore A hardness, this orange spider sits between the coupling hubs to transmit torque, dampen vibrations, and compensate for minor shaft misalignments . It is ideal for use with vacuum pumps driven by electric motors where reliable, low-maintenance power transmission is required.
This 54 mm long spring (Part #490077) is a replacement part made for two popular Pfeiffer vacuum pumps: the DUO 250A and the DUO 255M (Index C) . Inside your pump, this spring stores and releases mechanical energy. That is a fancy way of saying it pushes and pulls other parts so everything works the way it should. If you are rebuilding your pump or fixing a performance issue, this is the correct spring
This spring (Part #490076) is a replacement part made for Pfeiffer DUO 255M (Index C) and DUO 250A vacuum pumps . Every spring has a simple but important job. It stores and releases mechanical energy inside your pump . Without the right spring, other parts cannot move the way they should. If you are rebuilding your pump or fixing a performance issue, this is the correct spring .
10 in stock
10 in stock
This Compression Valve (Part #580052) is a replacement part made for three popular Pfeiffer DUO series vacuum pumps. It fits the DUO 120A, DUO 125, and DUO 250A models . A compression valve helps control gas flow and pressure inside your pump. If you are rebuilding your pump, you will need one of these valves for a complete overhaul .
This Stamp Valve (Part #580054) is a replacement part made for several popular Pfeiffer DUO series vacuum pumps. It fits the DUO 120A, DUO 250A, and DUO 255M (Index C) models . A stamp valve is a critical component that helps control the flow of gas through your pump. If you are rebuilding your pump, you will need either one or two of these valves, depending on your specific model .
For complete kit content details see bill of materials below
This is the Pfeiffer Part# PVK025 Vane Kit for DUO 250A and DUO 255M (Index C) vacuum pumps . This kit includes four vanes and four springs . It is also compatible with the DUO 120A pump . for optimal performance, this vane kit provides a reliable solution for routine maintenance (recommended every 4 years) and helps restore your pump’s original vacuum performance .
This Vane (Part #230095) is a replacement part made specifically for the Pfeiffer DUO 250A vacuum pump . It is designed for use in the second stage of this two-stage pump . This vane helps maintain proper contact and sealing inside your pump, which is essential for creating strong vacuum pressure . If you are rebuilding your DUO 250A, you will need two of these vanes for a complete overhaul .
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