ULVAC DA-241SC Vacuum Pump

( Brand: Ulvac ), ( Manufacturer Part Number: DA-241SC ), ( Part Type: Vacuum Pump ), ( R2v3 Functional: F1 Collectible Or Specialty Equipment ), ( R2v3 Cosmetic: C5 Used Very Good )

Review ULVAC Vacuum Pump

The **ULVAC DA-241SC** is a high-performance, oil-sealed rotary vane vacuum pump designed for precision applications requiring reliable and efficient evacuation in a wide range of industrial, laboratory, and research environments. Engineered with ULVAC s signature attention to detail, this compact yet robust pump delivers exceptional performance with a maximum ultimate vacuum of **1.3 10 mbar (10 Pa)** and a pumping speed of **24 m /h (142 cfm)** at atmospheric pressure, making it ideal for processes that demand consistent and repeatable results. Its **dual-stage rotary vane design** ensures smooth and quiet operation while minimizing oil vapor emission, reducing the need for frequent maintenance and extending the lifespan of both the pump and the system it supports. The DA-241SC is equipped with a **high-efficiency oil circulation system**, which maintains optimal lubrication and cooling, preventing overheating and ensuring stable performance even under prolonged or intermittent use.

Built with durability in mind, the DA-241SC features a **stainless steel rotor and vane assembly**, resistant to corrosion and wear, paired with a **high-grade synthetic vacuum oil** that resists degradation and maintains low vapor pressure for cleaner operation. The pump s **compact yet sturdy construction** allows for easy integration into existing setups, whether in semiconductor manufacturing, thin-film deposition, chemical analysis, or vacuum drying applications. Its **low noise output (below 60 dB(A))** and **vibration-dampening design** contribute to a quieter workspace, reducing operator fatigue and improving overall efficiency. Additionally, the DA-241SC is equipped with **multiple safety features**, including an **overheat protection system**, **oil level sensor**, and **pressure relief valve**, ensuring reliable operation and preventing potential damage from excessive backpressure or overheating.

For enhanced usability, the DA-241SC incorporates a **user-friendly control panel** with digital displays for real-time monitoring of vacuum levels, oil temperature, and system status, allowing operators to quickly diagnose and address any issues. The pump s **modular design** also facilitates easy access for maintenance, with replaceable components such as the oil filter, vanes, and seals designed for quick replacement, minimizing downtime. Whether used in research laboratories, production environments, or specialized industrial processes, the DA-241SC delivers a perfect balance of performance, reliability, and ease of use, making it a trusted choice for applications where precision and consistency are paramount. With ULVAC s reputation for innovation and quality engineering, this vacuum pump stands as a dependable solution for those seeking high-performance evacuation without compromise.

The **ULVAC DA-241SC** is a high-performance scroll-type vacuum pump designed for applications requiring precise and reliable vacuum generation, such as semiconductor manufacturing, analytical instruments, and research laboratories. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of the ULVAC DA-241SC**

1. **High Vacuum Performance**

The DA-241SC achieves ultra-high vacuum levels (down to **10 Pa** or better with proper backing) due to its scroll-type design, which minimizes internal leakage and provides smooth compression. This makes it suitable for sensitive applications like thin-film deposition, electron microscopy, and gas analysis.

2. **Reliability and Durability**

Scroll pumps are known for their robustness compared to rotary vane pumps, as they have fewer moving parts and no contact between the rotor and stator. This reduces wear and tear, leading to longer operational lifespans with proper maintenance. ULVAC is a reputable manufacturer with a track record of producing reliable industrial and scientific equipment.

3. **Low Noise and Vibration**

The scroll design operates with minimal vibration and noise (typically **

4. **Oil-Free or Oil-Lubricated Options**

The DA-241SC can be configured with **oil-free dry scroll technology** (e.g., using ceramic or magnetic levitation bearings) or traditional oil-lubricated variants. Oil-free versions eliminate contamination risks, which is critical for applications like semiconductor manufacturing where particle-free environments are mandatory. Oil-lubricated versions, however, may offer slightly better ultimate vacuum levels and longer service intervals.

5. **Compact and Modular Design**

The pump is designed for space efficiency, making it suitable for integration into compact systems or existing setups. Its modularity allows for easy installation and maintenance without requiring significant downtime.

6. **Compatibility with Backing Pumps**

The DA-241SC can be paired with a backing pump (e.g., a rotary vane or diaphragm pump) to achieve even lower pressures or higher throughput, expanding its versatility for different applications.

7. **Low Maintenance Requirements**

Compared to other high-vacuum pumps (e.g., turbomolecular pumps), scroll pumps require less frequent maintenance. The absence of vanes or seals that wear out over time reduces the need for regular servicing, though oil changes (if lubricated) and filter replacements are still necessary.

8. **Wide Range of Applications**

- **Analytical instruments** (e.g., gas chromatographs, mass spectrometers).

- **Research laboratories** (e.g., surface science, material science).

- **Medical and pharmaceutical industries** (e.g., vacuum drying, sterilization).

- **Aerospace and defense** (e.g., vacuum testing of components).

9. **Energy Efficiency**

Scroll pumps are generally more energy-efficient than turbomolecular pumps at similar vacuum levels, as they require less power to maintain performance. This can lead to lower operational costs over time.

10. **Support and Warranty**

ULVAC offers comprehensive technical support, warranties, and spare parts availability, which is crucial for maintaining uptime in critical applications. Their global presence also ensures accessibility for service and repairs.

---

### **Cons of the ULVAC DA-241SC**

1. **High Initial Cost**

The DA-241SC is a premium vacuum pump, and its upfront cost is significantly higher than that of standard rotary vane or diaphragm pumps. This can be a barrier for small laboratories, startups, or budget-conscious users. The price varies based on configuration (oil-free vs. oil-lubricated) and additional features like integrated controllers or cooling systems.

2. **Sensitivity to Contaminants**

While oil-free versions mitigate contamination risks, oil-lubricated models can be susceptible to oil degradation from backstreaming gases or particulate matter. This may require more frequent oil changes or filter replacements, especially in dirty or corrosive environments. Oil-free models, however, may have slightly lower ultimate vacuum performance.

3. **Limited Throughput for Some Applications**

Scroll pumps are not ideal for high-throughput applications where rapid pumping speeds are required. For example, in some semiconductor processes or large-volume degassing applications, a turbomolecular pump or a larger scroll pump may be more suitable. The DA-241SC is optimized for precision rather than speed.

4. **Complex Installation and Calibration**

Achieving optimal performance requires proper installation, alignment, and calibration. Improper setup can lead to reduced efficiency, increased wear, or even damage to the pump. Users may need to invest in training or hire specialists for installation, which adds to the overall cost.

5. **Dependence on Backing Pump**

To reach ultra-high vacuum levels, the DA-241SC must be paired with a backing pump. This adds complexity and cost to the system, as the backing pump must be appropriately sized and maintained. Failure of the backing pump can also lead to system downtime.

6. **Potential for Leakage**

While scroll pumps are generally leak-tight, improper sealing or aging gaskets can lead to minor leaks over time. Regular inspections and maintenance are necessary to prevent performance degradation.

7. **Limited Availability of Spare Parts**

As a specialized piece of equipment, finding spare parts or authorized service providers may be challenging outside major industrial hubs or ULVAC s service network. This could lead to extended downtimes if parts are not readily available.

8. **Not Ideal for Extreme Temperatures**

The DA-241SC is designed for standard laboratory or industrial environments (typically **0 50 C**). Exposure to extreme temperatures (e.g., high humidity, freezing conditions) may affect performance or require additional protective measures, such as heating or cooling systems.

9. **Learning Curve for Operation**

Users unfamiliar with high-vacuum systems may require training to operate the pump efficiently. Misuse, such as overloading or improper venting, can damage the pump or void warranties.

10. **Noise in Oil-Lubricated Models**

While generally quiet, oil-lubricated scroll pumps may produce slightly more noise than oil-free models due to the movement of lubricant. This is rarely an issue in most applications but could be a consideration in extremely sensitive environments.

---

### **Conclusion**

The **ULVAC DA-241SC** is a high-quality, reliable vacuum pump that excels in applications requiring **ultra-high vacuum, low noise, and minimal vibration**. Its scroll-type design offers durability, efficiency, and precision, making it a preferred choice for semiconductor manufacturing, analytical instruments, and research laboratories. The pump s ability to operate oil-free reduces contamination risks, while its modularity and compatibility with backing pumps enhance its versatility.

However, its **high cost, sensitivity to contaminants, and dependence on proper installation and maintenance** make it less suitable for budget-conscious or high-throughput applications. Additionally, users must be prepared for potential challenges related to spare parts availability and the need for specialized training.

---

### **Recommendation**

- You require **ultra-high vacuum levels** (below 10 Pa) for applications like thin-film deposition, electron microscopy, or gas analysis.

- Your environment demands **low noise and vibration**, such as in cleanrooms or precision instrumentation.

- You prioritize **reliability and longevity**, especially in critical or high-value applications where downtime is costly.

- You can afford the **higher initial investment** and are willing to invest in proper installation, maintenance, and training.

- Your application benefits from **oil-free operation** (e.g., semiconductor manufacturing, pharmaceutical processing).

- Your budget is limited, and you can achieve acceptable vacuum levels with a **lower-cost rotary vane or diaphragm pump**.

- You require **high throughput** (e.g., rapid degassing or large-volume pumping), in which case a **turbomolecular pump or larger scroll pump** may be more suitable.

- Your environment is **highly contaminated or corrosive**, and you cannot maintain oil-free conditions or frequent oil changes.

- You lack access to **technical support or spare parts**, as this could lead to extended downtimes.

For users in **semiconductor, analytical, or research settings** where precision and reliability are paramount, the **ULVAC DA-241SC is an excellent investment**. Its strengths in vacuum performance, durability, and low operational noise outweigh its drawbacks for most high-end applications. However, those with tighter budgets or different requirements should carefully evaluate alternatives to ensure the pump meets their specific needs. Always consult with ULVAC s technical support or a vacuum specialist to confirm compatibility with your exact application.

Details:

part #: da241sc price

• $1599.99

specifications valvplu:

• brand: Ulvac
• mpn: Da-241sc
• part type: Vacuum Pump
• r2v3 functional: F1 Collectible Or Specialty Equipment
• r2v3 cosmetic: C5 Used Very Good

offer valvplu:

• started: February 9, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 1

returns valvplu:

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

payments valvplu:

• other
• wallet: Paypal
• credit card: Diners-club

shipping valvplu:

• class: Standard
• carrier: UPS
• service: UPS Ground
• transit: 3-8 Days
• type: Calculated
• cost: $186.15

general valvplu:

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

seller valvplu:

• city: Morgan Hill, California
• rating: 99.6%
• # reviews: 13857

Ulvac DA-241SC Is Similar To:

• 17095 Ulvac Technologies Ionization Vacuum Gauge Sensor Head New Surplus (34.7% similar) The bureaus of us. Specifications part no: M-24 sale details item condition: new, 90 day warranty estimated packed shipping dimensions: l x w8 x8 2 lbs. Serial numbers or country of manufacture may vary. Only items pictured are included: if a part is not pictured, or mentioned above, then it ...(September 18th, 2018)
• D-950 Ulvac Oil Rotary Vacuum Pump Rebuilt Without Motor (46.3% similar) Ulvac D-950 oil rotary vacuum pump - rebuilt without motor...(April 14th, 2018)
• D-950d Ulvac Rotary Oil Vacuum Pump Toshiba World Induction Motor Assembly (38% similar) All pictures are taken in house. Compatibility issues are not considered DOA. All parts, including accessories and cables are only included if pictured or listed in the. Do not discard the packaging. USPS or ups ground. Please by sending a message through or calling. Save packaging for carrier claim...(May 7th, 2018)
• Da-031a Ulvac Kiko Rotary Vacuum Pump (60.3% similar) Open box vacuum pump, never installed...(October 26th, 2018)
• Da-120d Ulvac Sinku Kiko Kpa Diaphragm Vacuum Pump Volt (46.9% similar) Some exceptions may apply. Return PRODUCT3. Condition: new, in box no old inventory used, but good working , condition. Qty 1/6 5 lbs MD. Removed from closed plant. Let us know whats going on and we ll provide you a FedEx account to return product. Rebuilt, but in good working condition. 32 KP ...(May 18th, 2018)
• Da-120s Ulvac Sinku Kiko Diaphragm Vacuum Pump (55.6% similar) Above all, its exhaust is clean without causing contamination from oil vapor. Structurally, this type doesn't vacuum as efficiently oil sealed rotary pump. 0INLET, outlet pipe diameter. Motor speed Hz rpm ambient operating temperature range 7/4 0 degree c intel part number 4WEIGHTKG19. 9 g3 8 ...(January 9th, 2019)
• Dvs-321 Ulvac Scroll Dry Vacuum Pump Single Phase Mtorr (46.9% similar) Uncap equipment brokers, inc. Buyer may inspect the equipment prior to purchase and placement of order inspection is deemed a waivers right. Limited warranty buyer acknowledges that the equipment is being sold as and without any of merchant ability or fitness for a particular use. 2 hours, vacuum ...(October 17th, 2018)
• G-100dc Ulvac Kiko Oil Rotary Vacuum Pump Capacitor Motor (45.8% similar) Compatibility issues are not considered DOA. All pictures are taken in house. If in doubt, please before purchasing. USPS or ups ground. Standard shipping prices are only good for the lower 48 states. Ulvac kilo G-100DC oil rotary vacuum pump w Deng AETFL64PH002 capacitor motor this offer only comes...(April 5th, 2019)
• G-20d Ulvac Lpm Gpm Rotary Vane Stage Vacuum Pump Hitachi Tested (42.2% similar) Rotary vane vacuum pump made by Hitachi Ulvac sink kilo model no...(March 13th, 2018)
• G-50d Ulvac Vacuum Pump 115 (64.2% similar) Includes the unit in pics. Used Ulvac G-50D vacuum pump. Good working condition, see all 9 pics for details...(September 8th, 2017)
• Ghd-030 Ulvac Used Rotary Vacuum Pump (60.3% similar) Used takeout, good working condition...(June 6th, 2018)