PFEIFFER DUO-170 Balzers Rotary Vane Vacuum Pump 3-PHASE

( Brand: Pfeiffer ), ( Manufacturer Part Number: DUO-170 ), ( Part Type: Vacuum Pump ), ( Unit Type: Unit ), ( Maximum Flow Rate: 170cfm ), ( Number Of Stages: Dual Stage )

Review PFEIFFER Balzers Rotary Vane Vacuum Pump Tested Good 3-phase

The **Pfeiffer Duo-170 Balzers Rotary Vane Vacuum Pump** is a high-performance, three-phase industrial vacuum pump designed to deliver exceptional reliability, efficiency, and precision in demanding applications such as thin-film deposition, semiconductor manufacturing, surface treatment, and scientific research. Engineered by Pfeiffer Vacuum, a globally recognized leader in vacuum technology, this robust pump combines cutting-edge rotary vane technology with advanced Balzers engineering to achieve ultra-low pressure levels while maintaining outstanding durability and operational stability. The Duo-170 is specifically tailored for medium to high-volume applications where consistent performance and minimal maintenance are critical, making it an ideal choice for industries requiring precise control over atmospheric conditions.

At the heart of the Duo-170 is its **dual-stage rotary vane design**, which ensures superior pumping speed and efficiency across a wide pressure range, from atmospheric pressure down to ultra-high vacuum levels as low as **10 mbar**. The pump s **three-phase electric motor** provides smooth, high-torque operation, reducing energy consumption while maximizing throughput, making it both cost-effective and environmentally friendly. The rotary vane mechanism itself is constructed from high-quality, wear-resistant materials, including precision-machined vanes and a robust pump housing, which are engineered to withstand prolonged use in harsh environments without compromising performance. This design minimizes oil contamination and extends the pump s operational lifespan, reducing downtime and maintenance costs for users.

One of the standout features of the Duo-170 is its **integrated oil circulation system**, which ensures optimal lubrication and cooling of the internal components. This system not only enhances the pump s efficiency but also protects against overheating, even during extended operation. The pump s **automatic oil level control** and **self-cleaning mechanism** further contribute to its reliability, as they help prevent oil degradation and particulate buildup, which can otherwise impair performance. Additionally, the Duo-170 is equipped with a **user-friendly control interface**, allowing operators to monitor and adjust parameters such as pressure, flow rate, and motor speed with ease. This level of accessibility ensures seamless integration into existing vacuum systems, whether in research laboratories, manufacturing plants, or specialized industrial settings.

Safety and ease of use are prioritized in the design of the Duo-170, which includes **built-in protection features** such as thermal overload protection, vacuum failure detection, and automatic shutdown mechanisms to prevent damage from overloading or excessive pressure fluctuations. The pump s **compact yet sturdy construction** allows for flexible installation in various environments, while its **low-noise operation** minimizes disruption in sensitive workspaces. Furthermore, the Duo-170 is compatible with a range of **Pfeiffer Vacuum accessories**, including smart control systems, pressure sensors, and remote monitoring solutions, enabling users to optimize performance and troubleshoot issues in real time.

For applications requiring **high-purity environments**, the Duo-170 can be paired with **oil-free or synthetic oil alternatives**, reducing the risk of cross-contamination in critical processes. Its **modular design** also allows for easy upgrades or modifications, ensuring that the pump can adapt to evolving technological demands without requiring a complete replacement. Whether used in **semiconductor wafer processing, thin-film solar cell manufacturing, or advanced materials research**, the Pfeiffer Duo-170 Balzers Rotary Vane Vacuum Pump delivers unmatched precision, durability, and operational excellence, making it a cornerstone of modern vacuum technology.

### **Pfeiffer Duo-170 Balzers Rotary Vane Vacuum Pump (3-Phase) Pros and Cons**

#### **Pros**

1. **High Performance and Efficiency**

The Duo-170 is a robust rotary vane pump designed for high-vacuum applications, offering excellent pumping speed and low ultimate pressure (down to 10 mbar). It is well-suited for processes requiring precise control, such as thin-film deposition, sputtering, or semiconductor manufacturing.

2. **Reliability and Durability**

Pfeiffer Vacuum is a reputable brand known for high-quality, long-lasting vacuum equipment. The Duo-170 features a robust construction with oil-lubricated vanes, which reduces wear and extends the pump s operational lifespan compared to dry pumps in similar applications.

3. **Oil-Lubricated Design**

Unlike dry pumps, the Duo-170 uses oil lubrication, which enhances sealing and reduces mechanical stress on moving parts. This design is particularly advantageous for applications requiring continuous operation and high throughput.

4. **Compatibility with Fore-Vacuum Systems**

The pump can be paired with a fore-vacuum pump (e.g., a Roots blower or another rotary vane pump) to achieve even lower pressures, making it versatile for multi-stage vacuum systems.

5. **Good for Industrial and Research Applications**

It is commonly used in industries like semiconductor manufacturing, metallurgy, and scientific research where consistent vacuum performance is critical.

6. **Maintenance-Friendly (Compared to Some Alternatives)**

While oil-lubricated pumps require periodic oil changes, the Duo-170 s design allows for relatively straightforward maintenance, including vane and seal replacements.

7. **Proven Track Record**

Pfeiffer s Balzers line has been trusted for decades in high-precision vacuum applications, reducing the risk of unexpected failures in critical processes.

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#### **Cons**

1. **Oil Contamination Risk**

Oil-lubricated pumps introduce the risk of oil backstreaming into the vacuum chamber, which can contaminate sensitive processes (e.g., semiconductor fabrication or cleanroom applications). This requires additional safeguards like cold traps or differential pumping.

2. **Higher Operating Costs**

The pump consumes more power than dry pumps (typically 3-phase, 37 kW for the Duo-170), and oil replacement adds to maintenance expenses. Over time, this can increase operational costs compared to energy-efficient dry pumps.

3. **Noise and Vibration**

Rotary vane pumps can generate noticeable noise and vibration, which may require additional soundproofing or isolation in laboratory or cleanroom settings.

4. **Limited Ultimate Pressure for Some Applications**

While the Duo-170 reaches 10 mbar, certain ultra-high-vacuum (UHV) or high-purity applications may require additional pumping stages (e.g., turbomolecular pumps) to achieve lower pressures.

5. **Space and Installation Requirements**

The pump is relatively large and heavy, requiring adequate space for installation, ventilation, and maintenance access. This may be a constraint in compact laboratory setups.

6. **Dependence on Oil Quality**

Poor-quality or degraded oil can lead to reduced performance, increased wear, or even pump failure. Regular oil analysis and replacements are necessary to maintain efficiency.

7. **Higher Initial Cost**

Compared to some dry pumps or smaller rotary vane models, the Duo-170 represents a significant upfront investment, which may not be justified for low-volume or non-critical applications.

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### **Ending Conclusion**

The **Pfeiffer Duo-170 Balzers rotary vane vacuum pump (3-phase)** is a high-performance, reliable choice for industrial and research applications requiring robust vacuum performance. Its oil-lubricated design ensures durability and efficiency in demanding environments, making it ideal for processes like thin-film deposition, sputtering, or metallurgy. However, the trade-offs such as oil contamination risks, higher energy consumption, and maintenance costs must be carefully considered, particularly in cleanroom or ultra-high-vacuum applications where purity is critical.

For users prioritizing **performance, longevity, and compatibility with multi-stage systems**, the Duo-170 is an excellent investment. However, if **cost efficiency, minimal oil contamination, or lower noise levels** are priorities, alternatives like dry pumps (e.g., scroll pumps or diaphragm pumps) or hybrid systems (combining rotary vane with turbomolecular pumps) may be more suitable.

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### **Recommendation**

- You require a **high-speed, oil-lubricated pump** for industrial or research applications where reliability and throughput are critical.

- Your process can tolerate **some oil backstreaming risk** (with appropriate safeguards like cold traps).

- You operate in an environment where **maintenance and oil replacement** can be managed without excessive downtime.

- You need a **proven, durable pump** from a trusted manufacturer for long-term use.

- **Oil contamination is unacceptable** (e.g., in semiconductor cleanrooms), and you can justify the cost of dry pumps or additional purification stages.

- Your budget is constrained, and a **lower-cost, lower-power pump** (e.g., a smaller rotary vane or scroll pump) meets your needs.

- Your application requires **ultra-high vacuum (UHV) or extreme cleanliness**, in which case a turbomolecular pump or ion pump may be necessary alongside a fore-pump.

For most **high-demand industrial or research vacuum systems**, the Duo-170 remains a strong, well-supported choice provided the operational constraints are carefully managed.

Details:

Older unit, but recently tested and running well. Cosmetic wear consistent with age, but fully functional. Pulls strong vacuum can provide details if needed. Ideal for lab, vacuum systems, or industrial applications where a durable mechanical pump is needed.

For sale: Pfeiffer Blazers DUO-170 oil-sealed, belt-driven rotary vane vacuum pump.

part #: duo170 price

• $900.00

specifications valvplu:

• brand: Pfeiffer
• mpn: Duo-170
• part type: Vacuum Pump
• unit type: Unit
• maximum flow rate: 170cfm
• number of stages: Dual Stage

offer valvplu:

• best offers: True
• quantity: 1
• availability: In Stock
• options: Seller-arranged-local-pickup
• started: April 4, 2026
• sold: 0

returns valvplu:

• policy: No Returns

shipping valvplu:

seller valvplu:

• city: Albuquerque, New Mexico
• # reviews: 1
• rating: 100.0%

general valvplu:

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

payments valvplu:

• credit card: Mastercard
• wallet: Paypal
• other

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