1. Valves And Flow Controls Industrial Automation Control For Sale
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  3. KNF PU3061-N828

KNF PU3061-N828 Diaphragm Vacuum Pump

Pu3061-n828 Knf Diaphragm Vacuum Pump

( Brand: Knf ), ( Manufacturer Part Number: PU3061-N828 ), ( Type: Vacuum ), ( Featured Refinements: Vacuum Pump )

Review KNF Diaphragm Vacuum Pump

The **KNF PU3061-N828 Diaphragm Vacuum Pump** is a high-performance, oil-free vacuum solution engineered for precision applications requiring reliable, clean, and efficient air displacement without the need for lubricants or maintenance-intensive components. Part of KNF s renowned Neuberger series, this compact yet robust pump delivers exceptional suction power while maintaining exceptional air purity, making it an ideal choice for laboratories, medical facilities, semiconductor manufacturing, and industrial processes where contamination-free environments are critical. With a nominal displacement of 3061 liters per hour (measured at 1 bar) and a maximum vacuum level of up to 828 millibar (mbar), this pump excels in generating consistent and stable vacuum conditions across a wide range of applications, from simple filtration and degassing to more demanding tasks like freeze-drying, sample preparation, or process automation. Its diaphragm-driven mechanism ensures smooth, pulsation-free operation, minimizing noise levels and reducing wear on connected systems, while the integrated electronic control system provides precise regulation and protection against overloading or excessive pressure fluctuations. Constructed from high-quality materials, including corrosion-resistant stainless steel and durable elastomers, the PU3061-N828 is built to withstand frequent use in demanding environments, offering long-term reliability with minimal downtime. The pump s modular design allows for easy integration into existing setups, and its compact footprint makes it suitable for space-constrained applications without compromising performance. Whether used in research laboratories for sensitive experiments, pharmaceutical production for sterile processing, or industrial settings for material handling, this vacuum pump combines efficiency, precision, and environmental friendliness, making it a versatile and dependable asset for professionals who demand both performance and cleanliness in their operations.

### **Pros and Cons of buying a KNF PU3061-N828 Diaphragm Vacuum Pump**

#### **Pros:**

1. **High Reliability and Durability** KNF vacuum pumps are known for their robust construction, using durable materials like stainless steel and reinforced diaphragms. The PU3061-N828 is designed for continuous operation, reducing maintenance needs and extending lifespan.

2. **Oil-Free Operation** Unlike rotary vane or scroll pumps, this diaphragm pump does not require oil, making it ideal for applications where contamination must be avoided, such as in pharmaceuticals, food processing, or cleanroom environments.

3. **Low Maintenance Requirements** The pump features a self-lubricating design with minimal moving parts, reducing wear and tear. The diaphragm is replaceable, and the system is designed for easy servicing without requiring specialized tools.

4. **Versatile Applications** Suitable for a wide range of industries, including:

- **Laboratory and analytical equipment** (e.g., mass spectrometers, freeze dryers)

- **Medical and pharmaceutical processes** (e.g., vacuum packaging, sterilization)

- **Semiconductor and electronics manufacturing** (e.g., thin-film deposition)

- **Environmental and analytical testing** (e.g., gas sampling, vacuum distillation)

5. **Quiet Operation** Diaphragm pumps are generally quieter than positive displacement pumps, making them preferable in noise-sensitive environments.

6. **Energy Efficiency** While not as energy-efficient as some other pump types (e.g., turbomolecular pumps), the PU3061-N828 operates efficiently for its class, with a rated speed of **30.6 m /h (175 CFM)** at a maximum vacuum of ** 1 mbar (absolute)**.

7. **Compatibility with Various Gases** Can handle inert gases, corrosive gases, and some vapors without degradation, though specific chemical compatibility should be verified with KNF s documentation.

8. **Modular and Customizable** KNF offers accessories like filters, valves, and control interfaces, allowing integration into automated systems.

9. **Long Warranty and Support** KNF provides comprehensive warranties (typically 12 24 months) and strong after-sales support, including spare parts and technical assistance.

10. **Compact and Space-Efficient Design** The PU3061-N828 is relatively compact for its flow rate, making it suitable for installations with limited space.

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#### **Cons:**

1. **Limited Ultimate Vacuum** The pump achieves a maximum vacuum of ** 1 mbar (absolute)**, which is sufficient for many applications but insufficient for ultra-high vacuum (UHV) or high-vacuum processes (where turbomolecular or cryogenic pumps are needed).

2. **Lower Flow Rate at High Vacuum** While it delivers **30.6 m /h at atmospheric pressure**, its effective flow rate drops significantly as the vacuum improves, making it less efficient for deep vacuum applications.

3. **Higher Initial Cost Compared to Some Alternatives** Oil-free diaphragm pumps are generally more expensive than oil-sealed rotary vane pumps, though they may save costs in the long run due to lower maintenance and no oil replacement.

4. **Diaphragm Wear Over Time** Despite durability, diaphragms will eventually degrade with prolonged use, requiring periodic replacement (though KNF diaphragms are designed to last thousands of hours).

5. **Sensitivity to Particulate Contamination** While oil-free, the pump can be affected by dust, debris, or condensable vapors, which may require additional filtration or pre-pumping stages in dirty environments.

6. **Limited Backing Capability** For applications requiring roughing (e.g., before a turbomolecular pump), a separate roughing pump may still be needed, adding complexity to the system.

7. **Noise at High Speeds** While quieter than many pumps, it may produce noticeable noise when operating at full capacity, which could be a consideration in sensitive labs or offices.

8. **Specialized Installation Requirements** Proper installation, including correct piping, venting, and grounding, is essential to prevent damage or performance issues. Improper setup can void warranties.

9. **Not Ideal for High-Temperature Applications** The pump is designed for moderate temperature ranges; extreme heat or cold may affect performance or longevity.

10. **Dependence on Power Supply Stability** Like all electrical pumps, it requires a stable power source; fluctuations or surges could damage the motor or electronics.

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### **Conclusion**

The **KNF PU3061-N828** is a **high-quality, oil-free diaphragm vacuum pump** well-suited for **medium-vacuum applications** where reliability, cleanliness, and low maintenance are priorities. It excels in **laboratory, pharmaceutical, medical, and industrial processes** where contamination risks must be minimized. However, it is **not ideal for ultra-high vacuum or high-flow roughing applications**, where more specialized pumps (e.g., turbomolecular or scroll pumps) would be better.

If your application requires:

- **Oil-free operation**,

- **Moderate vacuum levels (down to 1 mbar)**,

- **Low maintenance and long-term durability**,

- **Compatibility with gases and clean environments**,

then the **PU3061-N828 is an excellent choice**. However, if you need **ultra-high vacuum, higher flow rates at deep vacuum, or extreme efficiency**, you may need to consider alternative pump technologies.

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### **Recommendation**

**Buy the KNF PU3061-N828 if:**

- Your application demands **oil-free operation** (e.g., pharmaceuticals, food processing, cleanrooms).

- You require **reliable, low-maintenance vacuum performance** for **medium-vacuum tasks** (e.g., freeze drying, vacuum packaging, analytical instruments).

- You operate in an environment where **contamination risks are a concern**.

- You prefer a **durable, long-lasting pump** with strong after-sales support.

**Consider alternatives if:**

- You need **ultra-high vacuum (below 1 mbar)** A **turbomolecular pump** or **cryogenic pump** would be better.

- You require **higher flow rates at deep vacuum** A **scroll pump** or **rotary vane pump (with oil)** may be more efficient.

- Your budget is tight A **lower-cost rotary vane pump** (with oil) could be a temporary solution, though it lacks the cleanliness of an oil-free system.

- You need **extreme temperature resistance** Some specialized diaphragm pumps or dry screw pumps may be more suitable.

**Final Verdict:** For most **medium-vacuum, oil-free applications**, the **KNF PU3061-N828 is a strong, reliable investment** that justifies its cost through longevity and performance. Ensure your system s requirements align with its specifications before purchasing.

Details:

Up for sale is, 1 - KNF PU3061-N828 Diaphragm Vacuum Pump, Used, selling as-is.

part #: pu3061n828 prices

  • $120.00-$133.00

specifications valvplu:

  • brand: Knf
  • mpn: Pu3061-n828
  • type: Vacuum
  • featured refinements: Vacuum Pump

general valvplu:

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

seller valvplu:

  • city: San Jose, California
  • # reviews: 969
  • rating: 100.0%

shipping valvplu:

  • service: USPS Ground Advantage, FedEx Ground Economy, FedEx Ground / FedEx Home Delivery
  • type: Calculated
  • class: Standard, Economy
  • carrier: USPS, FedEx
  • transit: 4-8 Days
  • cost: $20.90

offer valvplu:

  • sold: 0
  • options: Ship-to-home
  • best offers: True
  • quantity: 1
  • started: April 23, 2026
  • availability: In Stock

returns valvplu:

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

payments valvplu:

  • other
  • wallet: Google-pay
  • credit card: Discover
type: vacuum, featured refinements: vacuum pump,
category: business & industrial > pumps pump accessories > vacuum pumps, sku: 11994456304974853,
Knf PU3061-N828 Is Similar To:
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2 offers $120.00–$133.00 USD
  • Used. Offer #1 priced at $133.00 + $12.98 shipping estimate = $145.98* total. Part No: . KNF N828 VACUUM PUMP 24VDC 2.2AMP.+$12.98 shipping
  • Used. Offer #2 priced at $120.00 + $22.55 shipping estimate = $142.55* total. +$22.55 shipping

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