LEYBOLD TRIVAC 11276 Vacuum Pump D25B

( Brand: Leybold Trivac ), ( Manufacturer Part Number: 11276 ), ( Type: Vacuum )

Review LEYBOLD TRIVAC Vacuum Pump

The **Leybold TRIVAC 11276 D25B** is a high-performance, oil-sealed rotary vane vacuum pump designed for demanding applications requiring reliable, efficient, and precise vacuum generation. Part of Leybold s renowned TRIVAC series, this model combines robust engineering with advanced features to deliver exceptional performance across a wide range of industries, including semiconductor manufacturing, research laboratories, medical equipment production, and industrial process engineering. The **D25B** variant is specifically engineered for applications requiring a balance of high throughput and compact design, making it ideal for installations where space optimization is critical without compromising on performance.

At its core, the TRIVAC 11276 D25B operates on a proven rotary vane principle, where two vanes rotate within an oval-shaped chamber, creating a continuous vacuum by alternately compressing and expelling gas. This design ensures smooth and quiet operation, minimizing mechanical stress while maintaining consistent pumping speeds across its operational range. The pump is equipped with a **250-liter/s (15 cfm) nominal pumping speed at 10 mbar (10 Pa)**, making it well-suited for applications requiring moderate to high vacuum levels, such as degassing, drying, or initial evacuation stages in multi-stage pumping systems. Its **ultimate vacuum of approximately 10 mbar (1 Pa)** is achieved with minimal effort, thanks to the efficient sealing and compression mechanisms integrated into the pump s architecture.

One of the standout features of the TRIVAC 11276 D25B is its **compact yet sturdy construction**, which includes a **direct-drive motor** for reliable and energy-efficient operation. The motor is designed to minimize heat generation, reducing the need for additional cooling systems in many applications. The pump s **oil-sealed design** ensures long-term reliability by maintaining a consistent lubrication film between the vanes and the chamber, which not only enhances wear resistance but also reduces the risk of gas leakage. Leybold s proprietary **TRIVAC oil**, a high-quality, low-vapor-pressure synthetic lubricant, is used to further optimize performance, providing excellent thermal stability and extended oil life, which translates to reduced maintenance and downtime.

For enhanced safety and operational flexibility, the TRIVAC 11276 D25B is equipped with a **built-in pressure switch** that allows for automatic control of the pump s operation, ensuring it only activates when necessary and shutting off when the desired vacuum level is reached. This feature not only conserves energy but also extends the lifespan of the pump by preventing unnecessary wear. Additionally, the pump is designed with **easy-access components**, such as a **quick-release oil drain valve** and a **serviceable oil filter**, simplifying routine maintenance tasks and reducing the time required for servicing. The robust **aluminum housing** provides both thermal dissipation and protection against mechanical damage, while the **stainless steel shaft seal** ensures long-term reliability in corrosive or contaminated environments.

The TRIVAC 11276 D25B is also engineered with **user convenience in mind**, featuring a **user-friendly control panel** that can be integrated into larger vacuum systems or operated independently. The pump s **low noise output**, typically below 65 dB(A), makes it suitable for laboratory or cleanroom environments where acoustic considerations are important. Furthermore, Leybold s commitment to quality assurance is evident in the **rigorous testing and certification** the pump undergoes, ensuring compliance with international standards such as ISO 9001 and CE marking, which guarantees its suitability for a broad range of applications worldwide.

Whether used as a standalone pump or as part of a larger vacuum system, the Leybold TRIVAC 11276 D25B delivers a dependable, high-performance solution for achieving and maintaining precise vacuum levels. Its combination of **efficiency, durability, and ease of maintenance** makes it a preferred choice for engineers and technicians who demand reliability without sacrificing performance. With Leybold s reputation for innovation and engineering excellence, this vacuum pump stands as a testament to the brand s commitment to delivering tools that meet the evolving needs of modern industrial and scientific applications.

### Pros and Cons of Buying a Leybold TRIVAC 11276 D25B Vacuum Pump

#### **Pros**

1. **High Performance and Efficiency** The TRIVAC 11276 D25B is a robust rotary vane vacuum pump designed for high vacuum applications, offering excellent pumping speed and low ultimate pressure (down to approximately 1 10 mbar). This makes it suitable for applications requiring precise control, such as semiconductor manufacturing, research labs, or thin-film deposition.

2. **Reliability and Durability** Leybold is a well-established brand in vacuum technology, known for producing high-quality, long-lasting equipment. The TRIVAC series is particularly renowned for its durability, with reinforced components to withstand demanding operational conditions.

3. **Versatility** This pump can handle a wide range of gases, including inert gases, air, and some corrosive vapors (depending on the oil used). It is also compatible with various applications, from general laboratory use to industrial processes like sputtering or etching.

4. **Low Maintenance Requirements** Compared to other types of vacuum pumps, rotary vane pumps like this one generally require less frequent maintenance. The design minimizes wear on critical components, reducing downtime.

5. **Compatibility with Leybold Systems** If you are already using other Leybold vacuum components (e.g., controllers, gauges, or chambers), this pump integrates seamlessly, ensuring compatibility and ease of system integration.

6. **Energy Efficiency** The TRIVAC series is designed to operate efficiently, consuming less power relative to its pumping capacity compared to some alternatives.

7. **After-Sales Support and Spare Parts Availability** Leybold has a global network of service centers and distributors, making it easier to access spare parts, repairs, and technical support if needed.

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#### **Cons**

1. **High Initial Cost** The TRIVAC 11276 D25B is a premium product, and its purchase price is significantly higher than that of generic or lower-end vacuum pumps. This can be a barrier for small labs or startups with limited budgets.

2. **Oil Consumption and Maintenance** As a rotary vane pump, it requires oil for lubrication and sealing. Over time, the oil degrades and must be replaced, adding to operational costs. Additionally, oil changes require careful handling to avoid contamination of the system.

3. **Noise Levels** Rotary vane pumps can be relatively noisy, especially at higher speeds. This may not be ideal for noise-sensitive environments or applications requiring quiet operation.

4. **Limited Ultimate Vacuum** While it performs well for many applications, the ultimate vacuum (1 10 mbar) may not be sufficient for ultra-high-vacuum (UHV) or extreme low-pressure requirements. For such cases, a turbomolecular pump or cryopump would be more appropriate.

5. **Size and Installation Space** The pump is physically large and requires adequate space for installation, including proper ventilation and access for maintenance. This may not be feasible in compact or space-constrained setups.

6. **Potential for Oil Backstreaming** If not properly maintained or if the pump fails, oil can backstream into the vacuum chamber, contaminating sensitive processes. This risk necessitates the use of oil traps or secondary pumps in critical applications.

7. **Dependence on Oil Quality** The performance and lifespan of the pump are directly tied to the quality of the oil used. Poor-quality or incompatible oil can lead to premature wear, reduced efficiency, or even pump failure.

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### **Conclusion**

The Leybold TRIVAC 11276 D25B is an excellent choice for applications requiring a reliable, high-performance rotary vane vacuum pump. Its strengths lie in its durability, efficiency, and compatibility with Leybold s ecosystem, making it ideal for research labs, semiconductor manufacturing, and industrial processes where precision and consistency are critical. However, its high cost, maintenance requirements, and limitations in ultra-high-vacuum applications may make it less suitable for budget-conscious users or those needing extreme low-pressure environments.

For users who prioritize performance, longevity, and brand reliability, the TRIVAC 11276 D25B is a strong recommendation. Conversely, if cost is a major concern or if the application demands ultra-high vacuum, alternative solutions such as turbomolecular pumps or cryopumps should be considered.

### **Recommendation**

- You require a robust, high-performance rotary vane pump for medium to high vacuum applications.

- You are already using Leybold components and need seamless integration.

- Your budget allows for the initial investment, and you can accommodate maintenance costs.

- Your application does not require ultra-high vacuum levels.

- Your budget is limited, and you can find a comparable pump from a different manufacturer at a lower cost.

- You need ultra-high vacuum capabilities, in which case a turbomolecular pump or cryopump may be more appropriate.

- Noise levels or space constraints are significant concerns, as other pump types (e.g., scroll pumps or diaphragm pumps) may be more suitable.

Details:

240/480 VAC 50 OR 60 Hz You are buying on 1 pump, and you get what see. This pump is TOO heavy for UPS. It has been tested and pumps GREAT. This pump is like NEW!It was run for a few hours and removed set aside forgot about.

part #: 11276 prices

• $299.00-$1750.00

specifications valvplu:

• brand: Leybold Trivac
• mpn: 11276
• type: Vacuum

general valvplu:

• Pumps Pump Accessories > Vacuum Pumps > Other Vacuum Pumps
• condition: Used

shipping valvplu:

payments valvplu:

• credit card: Visa
• other
• wallet: Google-pay

offer valvplu:

• started: March 16, 2026
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0

seller valvplu:

• # reviews: 334
• city: Terre Haute, Indiana
• rating: 100.0%

returns valvplu:

• policy: No Returns

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