PFEIFFER VACUUM PK-D41-062-G Rotary Vane Pump 801234629087 Duo 2.5

( Brand: Pfeiffer Vacuum ), ( Manufacturer Part Number: PK-D41-062-G ), ( Part Type: Vacuum Pump ), ( Number Of Stages: Dual Stage ), ( Maximum Power: 150 W ), ( Maximum Flow Rate: 1.5 Cfm ), ( Maximum Pressure: 3x10 Hpa ), ( Country Of Origin: Germany ), ( Unit Type: Unit ), ( UPC: 801234629087 )

Review PFEIFFER VACUUM 2.5 Pk D41 062rotary Vane Pump Best Offer

The **Pfeiffer Vacuum DUO 2.5 D41 062 (Product No. 801234629087)** is a high-performance, oil-sealed rotary vane vacuum pump designed for demanding applications requiring precise and reliable vacuum generation. Engineered with Pfeiffer Vacuum s signature precision and durability, this pump is ideal for industries such as semiconductor manufacturing, research laboratories, medical equipment, and industrial processes where consistent vacuum performance is critical. The DUO 2.5 D41 062 operates on a dual-stage rotary vane principle, delivering exceptional ultimate vacuum levels of approximately **1 10 mbar (0.75 Torr)** while maintaining robust throughput for efficient gas handling. Its compact yet robust design incorporates a **2.5 kW motor**, ensuring high pumping speed and energy efficiency, making it suitable for both continuous and intermittent duty cycles.

This model features a **D41 oil circulation system**, which enhances reliability by continuously filtering and cooling the vacuum oil, extending the pump s operational lifespan and reducing maintenance requirements. The pump s vane mechanism is meticulously balanced to minimize wear and vibration, contributing to quieter operation and greater longevity. The DUO series is equipped with a **digital control interface**, allowing for precise monitoring and adjustment of vacuum parameters, while its modular construction facilitates easy integration into existing systems. The robust stainless steel housing and sealed bearings provide corrosion resistance and durability in harsh environments, ensuring consistent performance even under demanding conditions.

For applications requiring high purity and contamination control, the DUO 2.5 D41 062 can be paired with Pfeiffer s **Oil-Free Technology** options or specialized filtration systems, further enhancing its suitability for sensitive processes. Its compact footprint and efficient design make it a versatile choice for both bench-top and industrial setups, where space optimization and performance are paramount. Whether used in material deposition, thin-film coating, or analytical instrumentation, this pump delivers the reliability and precision needed to meet the most exacting vacuum requirements. Built on Pfeiffer Vacuum s legacy of innovation, the DUO 2.5 D41 062 represents a robust solution for professionals seeking dependable vacuum technology.

**Pros and Cons of buying a Pfeiffer Vacuum Duo 2.5 D41 062 Rotary Vane Pump (Part Number: 801234629087)**

### **Pros**

1. **High Performance and Efficiency**

The Duo 2.5 D41 062 is designed for high-speed pumping with a nominal pumping speed of up to 2.5 m /h (depending on the gas) and a maximum ultimate vacuum of approximately **10 mbar (10 Pa)**. This makes it suitable for applications requiring moderate to high vacuum levels, such as laboratory processes, small-scale industrial systems, or research setups.

2. **Dual-Stage Configuration**

The "Duo" designation indicates a two-stage rotary vane design, which improves efficiency by first rough-pumping and then fine-pumping, reducing the workload on the pump and extending its lifespan. This dual-stage approach also helps achieve better ultimate vacuum levels compared to single-stage pumps.

3. **Reliability and Durability**

Pfeiffer Vacuum is a well-established manufacturer known for producing robust and long-lasting vacuum equipment. The D41 series is designed with precision-engineered components, including corrosion-resistant materials and sealed bearings, which contribute to reliable operation over extended periods.

4. **Compact and Modular Design**

The pump is relatively compact for its performance, making it suitable for installations where space is limited. Its modular design allows for easy integration into existing vacuum systems, and it often comes with compatible accessories like valves, controllers, or filtration systems.

5. **Low Maintenance Requirements**

Rotary vane pumps like this one typically require less frequent maintenance compared to other types of pumps (e.g., turbomolecular pumps). The vanes are designed to wear gradually, and the pump can often operate for thousands of hours before requiring significant servicing. Oil changes are generally infrequent, depending on usage.

6. **Versatility in Applications**

This pump can handle a variety of gases, including air, nitrogen, argon, and some inert gases, making it versatile for laboratory, semiconductor, and small-scale manufacturing applications. It is also suitable for applications where oil-free operation is not strictly required (unlike dry pumps).

7. **Compatibility with Control Systems**

Pfeiffer Vacuum often provides compatible control units and software for monitoring and managing the pump s operation. This can include features like automatic start/stop, leak detection, and performance logging, which enhance usability in automated systems.

8. **Good Value for Mid-Range Applications**

While not as high-end as turbomolecular or cryogenic pumps, the Duo 2.5 D41 062 offers a balance between cost and performance. It is more affordable than larger or more sophisticated pumps while still delivering reliable vacuum performance for many applications.

---

### **Cons**

1. **Oil-Based Operation**

Like most rotary vane pumps, this model relies on oil for lubrication and sealing. This means it is not oil-free, which can be a drawback in applications where contamination from oil vapor is a concern (e.g., some semiconductor processes or ultra-high-vacuum applications). Oil changes are necessary to maintain performance, adding to operational costs.

2. **Limited Ultimate Vacuum**

The ultimate vacuum of approximately **10 mbar (10 Pa)** is suitable for many applications but may be insufficient for ultra-high-vacuum (UHV) or high-vacuum (HV) requirements. For applications needing lower pressures (e.g., below 10 mbar), additional pumps (such as turbomolecular or diffusion pumps) would be required in series.

3. **Noise and Vibration**

Rotary vane pumps can generate noticeable noise and vibration during operation, which may be a consideration in laboratory or sensitive environments. While not excessively loud by industrial standards, it may require soundproofing or vibration isolation in some setups.

4. **Sensitivity to Contaminants**

The pump s oil and internal components can be damaged by particulate matter, moisture, or corrosive gases. Proper filtration and regular maintenance are essential to prevent clogging or degradation of the pump s performance. Ingress of contaminants can shorten the pump s lifespan.

5. **Higher Power Consumption**

Compared to some dry pumps or smaller rotary vane models, this pump may consume more electrical power, especially during continuous operation. This can contribute to higher operational costs over time.

6. **Limited Lifespan Compared to Dry Pumps**

While durable, oil-based rotary vane pumps generally have a shorter operational lifespan than dry pumps (e.g., scroll or claw pumps) when subjected to harsh conditions or frequent oil changes. The oil itself degrades over time and may need replacement every 1,000 3,000 hours, depending on usage.

7. **Dependence on Supplier Support**

Pfeiffer Vacuum is a reputable brand, but like any specialized equipment, it may require access to authorized service centers for repairs or replacements. This could lead to downtime or higher costs if parts are not readily available.

8. **Not Ideal for High-Volume or Continuous Industrial Use**

While capable of handling moderate loads, this pump may not be suitable for high-volume industrial applications where larger or more robust pumps (e.g., oil-sealed rotary vane pumps with higher capacities) are required.

---

### **Conclusion**

The Pfeiffer Vacuum Duo 2.5 D41 062 rotary vane pump is a well-engineered, reliable choice for applications requiring a moderate to high vacuum (down to 10 mbar) in laboratory, research, or small-scale industrial settings. Its dual-stage design, efficiency, and durability make it a strong option for users who prioritize performance and ease of maintenance. However, its oil-based operation, limited ultimate vacuum, and sensitivity to contaminants may pose challenges in certain environments.

- Laboratory experiments requiring moderate vacuum levels.

- Small-scale manufacturing or processing applications.

- Systems where space is constrained but performance is critical.

- Applications where oil contamination is acceptable or manageable.

- Ultra-high-vacuum or high-vacuum applications.

- Environments where oil-free operation is mandatory.

- High-volume industrial processes requiring larger capacities.

---

### **Recommendation**

If your application demands a **moderate vacuum (10 to 10 mbar)**, requires **reliable and efficient pumping**, and can accommodate **oil-based operation**, the Pfeiffer Vacuum Duo 2.5 D41 062 is an excellent choice. Its dual-stage design, compatibility with control systems, and reputation for durability make it a cost-effective solution for many users.

For applications needing **lower ultimate pressures (below 10 mbar)**, consider pairing this pump with a turbomolecular or diffusion pump. If oil-free operation is critical, explore dry pump alternatives such as scroll or claw pumps, though these may offer lower pumping speeds or higher initial costs.

Before purchasing, verify compatibility with your specific gases, system requirements, and maintenance capabilities. Consulting with a vacuum specialist or Pfeiffer Vacuum s technical support can help ensure the pump meets your long-term needs.

Details:

Brand: Pfeiffer Vacuum model: DUO 2.5 model Number/MPN: PK D41 062Country of Manufacture: Germany voltage : 105V, 115-125V Oil: IN. 45 0.4 I Functional Testing: Tested and fully functional Power Supply: Included, The unit displays good cosmetic condition with minor scuffs marks on the housing base plate, consistent normal laboratory use. The included power cord is coiled neatly.

specifications valvplu:

• brand: Pfeiffer Vacuum
• mpn: Pk-d41-062-g
• part type: Vacuum Pump
• number of stages: Dual Stage
• maximum power: 150 W
• maximum flow rate: 1.5 Cfm
• maximum pressure: 3x10 Hpa
• country of origin: Germany
• unit type: Unit
• upc: 801234629087

general valvplu:

• Pumps Pump Accessories > Vacuum Pumps > Rotary Vane Pumps
• condition: Used

offer valvplu:

• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• best offers: True
• started: March 18, 2026

returns valvplu:

• method: Money back
• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

shipping valvplu:

• class: Standard, Expedited
• transit: 3-7 Days
• type: Fixed
• carrier: UPS
• cost: $0.00
• service: UPS Ground, Expedited

seller valvplu:

• city: Fairfield, California
• # reviews: 1981
• rating: 99.9%

payments valvplu:

• other
• wallet: Paypal
• credit card: Mastercard

Pfeiffer Vacuum PK-D41-062 Is Similar To:

• 016b Pfeiffer Balzers Duo Rotary Vane Vacuum Pump (49.2% similar) Pfeiffer blazers duo 016B rotary vane Vacuum pump...(September 29th, 2018)
• 1.5a Pfeiffer Duo Dual Stage (34.3% similar) The pump came on immediately and ran without any issues. This item is in okay overall cosmetic condition with a few marks and some paint missing from one side. Please refer to the pictures provided below for more details on condition of item. Quick stop offers, inc. We were able to test this pump by...(October 8th, 2017)
• 1095951 Pfeiffer New Duo Vacuum Pump Pn (36.2% similar) Pfeiffer duo 5 Vacuum pump Mk...(July 7th, 2018)
• 114720 Adixen Exhaust Purge Flow Control Pfeiffer Vacuum (22.6% similar) See picture for details. Includes only whats in photos. Priced to sell, on hand and ready ship. Unit and cables as shown. Guaranteed new working condition. Picture is of one in a batch same condition items. Dixon exhaust purge flow control Pfeiffer Vacuum this item is new but not in original box ...(July 16th, 2018)
• 15853 Adixen Exhaust Purge Flow Control Pfeiffer Vacuum New (25% similar) Buyers of these items usually have repair knowledge or use for parts the item. Dixon exhaust purge flow control Pfeiffer Vacuum new images to this listing is for one item being sold as sealed...(May 9th, 2018)
• 21226052 Pfeiffer Vacuum Duo Pk Condition Very Little Use Minimum Hours (45.9% similar) Used very little and looks new v tested down to 8 m tore. This unit is in a1 condition...(September 3rd, 2018)
• 221ahalzr Pfeiffer Vacuum Pascal Pump Adixen With Accessories Working (38.4% similar) This Vacuum was used in a steered NC machine and has not been run more than 30 cycles. This product comes with everything pictured including oil...(April 18th, 2018)
• 44454743 Pfeiffer Vacuum Evb 063 (34.9% similar) Surplus SAM's inc. JP Pfeiffer Vacuum PDF valve EVB063-160PA PX. Fl for detailed specifications please see the following: Yakut-Vacuum. PDF estimated retail price: 1,550...(January 29th, 2018)
• 80 Pm P03 941 A Pfeiffer Vacuum Hipace Turbo Pump Tc 689192502167 (35.2% similar) Pfeiffer Vacuum hi pace 80 pm P03 941 a turbo pump w Tc 110 PO...(May 4th, 2018)
• Acp-15 Adixen Pfeiffer Dry Pump (31.5% similar) This includes a full line of rebuilt turbo, vane, piston, cry, scroll, blower, Vacuum pumps, systems and helium leak detectors. Is now in our 28TH year of operation, offering sales and service Vacuum pumps. We buy surplus and used Vacuum equipment. We maintain one of the largest inventories rebuilt ...(August 8th, 2018)
• Asher Jvc Ashing Plasma Etching Etcher Pfeiffer Vacuum System (29% similar) Please open a return via. 75 kw volt 3 phase selling item that is pictured only. Qty lbs w pallet DH for expedited shipping options. Removed from closed plant. Details: selling item as pictured. Please notice in pictures that enclosure has various different size holes. Some exceptions may apply...(December 15th, 2018)