This is the Pfeiffer Part# PMK024 Major Overhaul Kit for the DUO 120A vacuum pump. This complete kit includes everything you need for a full pump rebuild: GX vanes, springs, seals, O-rings, valves, coupling, gaskets, sight glass, and more. Following Pfeiffer’s recommended 4-year maintenance schedule, this kit restores your pump to like-new condition.
This is the Pfeiffer Part# PVK024 Vane Kit for the DUO120A vacuum pump . This kit includes engineered vanes designed for seamless compatibility with your DUO pump, ensuring optimal performance and longevity . Crafted for durability, this vane kit provides a reliable solution for routine maintenance and helps keep your pump running efficiently . The vanes inside this kit are made from GX material, a high-strength fiberglass composite .
This Support Ring (Part #520035) is a component for your Pfeiffer DUO vacuum pump . It provides essential reinforcement and stability to the pump’s internal assembly. This helps your pump run smoothly and reliably. This ring is designed specifically for the Pfeiffer DUO 120A and DUO 125 pump models . If you are rebuilding your pump or replacing worn parts, this support ring is a critical component you will need.
This Sealing Ring (Part #300207) is a replacement part made for Pfeiffer DUO 120A vacuum pumps. It is a small but critical component that helps keep your pump running properly. Two of these rings are used inside each DUO 120A pump, and they are also included in the official Pfeiffer seal kit (PSK024). If you are rebuilding your pump or fixing a leak, this is the right part for the job.
This is the Pfeiffer Part# PSK024 Seal Kit for the DUO 120A vacuum pump . This comprehensive kit includes O-rings, oil seals, and gaskets . Designed specifically for the DUO 120A, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance
Keep your Pfeiffer vacuum pump running smoothly with this Oil Seal (Part #310149). Made specifically for the DUO 120A and DUO 125 models, this small but critical part stops oil from leaking out and dirt from getting in. If you are rebuilding your pump or fixing a small leak, this seal is exactly what you need to get the job done right.
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
This Steel Sleeve (Part #250030) is a genuine replacement part made for Pfeiffer DUO 120A and DUO 125 vacuum pumps. It is a durable, precision-engineered component made from high-quality steel. This sleeve is a critical internal part that helps your pump run smoothly and efficiently. If you are rebuilding your pump or replacing worn parts, this is the correct sleeve for the job
This Spacer (Part #440050) is an essential component for your Pfeiffer DUO vacuum pump . Its job is to maintain a specific distance or gap between different parts inside the pump . It also helps keep everything perfectly aligned. The right spacing and alignment are critical for smooth, efficient operation . This spacer is designed specifically for the Pfeiffer DUO 120A and DUO 125 pump models . If you are rebuilding your pump or replacing worn internal parts, you may need this spacer.
This Vane Spring (Part #490069) is a replacement part made for Pfeiffer DUO 120A and DUO 125 vacuum pumps . Unlike a regular spring, a vane spring has one specific job: it pushes the vane outward against the cylinder wall. This creates the seal needed to generate vacuum pressure. If you are rebuilding your pump, you will need eight of these springs for a full overhaul
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 1st Stage Vane (Part #230092) is a replacement part made for Pfeiffer DUO120A and DUO125 vacuum pumps . It is designed for use in the first stage of these two-stage pumps. Made from durable GX material, this vane helps maintain a tight seal inside your pump, which is essential for creating strong vacuum pressure . If you are rebuilding your DUO120A pump, you will need two of these vanes for a complete overhaul .
This 2nd Stage Vane (Part #230093) is a replacement part made for Pfeiffer DUO120A and DUO125 vacuum pumps . It is designed for use in the second stage of these two-stage pumps. Made from durable GX material, this vane helps maintain a tight seal inside your pump, which is essential for creating strong vacuum pressure. If you are rebuilding your DUO120A pump, you will need two of these vanes for a complete overhaul .
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