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  3. KNF PML17273-FF

KNF PML17273-FF Micro Diaphragm Pump

Pml17273-ff Knf 20 Micro Diaphragm Liquid Pump

( Brand: Knf ), ( Manufacturer Part Number: PML17273-FF ), ( Model: PML17273-FF 20 ), ( P Max: 300 Kpa ), ( Uctrl: Vdc ), ( Motor Type Options: Dc, Brushless Dc ), ( Diaphragm Material Options: Epdm, Ptfe ), ( Suction Height: Max. ), ( Valve Material Options: Epdm, Ffkm )

Review KNF Micro Diaphragm Liquid Pump

The **KNF PML17273-FF 20 Micro Diaphragm Pump** is a high-performance, compact fluid transfer solution engineered for precision applications where reliability, efficiency, and minimal maintenance are critical. Part of KNF s renowned **PML series**, this pump is specifically designed for low to medium flow rates with exceptional suction and delivery capabilities, making it ideal for laboratory settings, medical devices, analytical instrumentation, and industrial processes requiring accurate fluid handling. Its **20 mm diaphragm** ensures robust performance while maintaining a compact footprint, allowing seamless integration into tight spaces or automated systems. The pump operates on a **dual-diaphragm principle**, which significantly enhances durability and extends operational lifespan by reducing wear and tear compared to single-diaphragm alternatives. Constructed with **high-quality materials**, including corrosion-resistant components, the PML17273-FF is compatible with a wide range of fluids, including aggressive chemicals, solvents, and gases, provided they meet the pump s material compatibility guidelines. Its **electronic speed control** enables precise flow regulation, allowing users to adjust output dynamically for applications demanding variable flow rates, such as sample preparation, vacuum generation, or pneumatic actuation. The pump s **self-priming capability** ensures reliable performance even when handling liquids with entrained air or when starting from a dry state, a feature particularly valuable in laboratory environments where consistency is paramount. Additionally, the **low-noise operation** and **vibration-dampening design** contribute to a quieter workflow, reducing potential disruptions in sensitive environments. KNF s reputation for **energy efficiency** is reflected in this model, which minimizes power consumption while delivering consistent performance, further reducing operational costs. The PML17273-FF is equipped with **safety features**, including thermal protection and overload monitoring, to prevent damage from overheating or excessive backpressure, ensuring prolonged operational reliability. Whether used in **liquid handling, gas transfer, or vacuum applications**, this pump s combination of precision engineering, versatility, and durability makes it a dependable choice for professionals seeking a high-performance, low-maintenance solution.

### **Pros and Cons of buying a KNF PML17273-FF (20 Micron Diaphragm Pump)**

#### **Pros**

1. **High Precision and Reliability** The PML series from KNF is known for its robust construction and consistent performance, making it suitable for applications requiring precise fluid handling, such as laboratory processes, medical devices, or industrial filtration systems.

2. **Compact and Lightweight Design** The 20-micron diaphragm pump is designed for space efficiency, allowing it to be integrated into compact setups without sacrificing performance. This is particularly useful in research labs or portable applications.

3. **Low Maintenance Requirements** KNF pumps are engineered for durability, with minimal wear parts that extend operational life. The diaphragm material (likely PTFE or similar) resists chemical corrosion, reducing the need for frequent replacements.

4. **Quiet Operation** Compared to some other diaphragm pumps, the PML series operates relatively quietly, which is beneficial in sensitive environments like laboratories or cleanrooms.

5. **Wide Compatibility** The pump can handle a variety of fluids, including gases, liquids, and aggressive chemicals, depending on the diaphragm and seal materials. This versatility makes it adaptable to different applications.

6. **Energy Efficiency** KNF pumps are designed to operate efficiently, consuming less power than some alternatives while maintaining high performance.

7. **Long Lifespan** With proper maintenance, these pumps can last for years, reducing long-term costs associated with replacements or repairs.

8. **Support and Warranty** KNF is a reputable manufacturer with strong after-sales support, including warranties and access to replacement parts, which adds value for industrial or mission-critical applications.

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#### **Cons**

1. **Higher Initial Cost** Compared to some generic or lower-end diaphragm pumps, the KNF PML17273-FF is a premium product, which may be a significant investment for small businesses or individual users on a tight budget.

2. **Limited Availability of Spare Parts** While KNF provides support, finding third-party replacements for specific components (e.g., diaphragms, seals) can be challenging, potentially leading to downtime if maintenance is delayed.

3. **Specialized Knowledge Required** Proper installation, calibration, and maintenance may require technical expertise. Users without experience in diaphragm pump systems might need training or professional assistance.

4. **Potential for Contamination Risks** If not properly maintained, the pump s internal components (e.g., diaphragms, valves) could degrade and introduce contaminants into the fluid system, especially in sensitive applications like pharmaceuticals or food processing.

5. **Noise at High Pressures** While generally quiet, some users report increased noise levels when operating at maximum pressure or flow rates, which may be a concern in noise-sensitive environments.

6. **Not Ideal for High-Volume Applications** The 20-micron model is designed for precise, low-to-medium flow applications. For high-volume or industrial-scale use, larger or more powerful pumps may be required.

7. **Dependence on Power Supply** Like most electric pumps, it requires a stable power source. Fluctuations or outages could disrupt operations, particularly in critical applications.

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### **Conclusion**

The **KNF PML17273-FF (20 Micron Diaphragm Pump)** is a high-quality, reliable choice for applications demanding precision, low maintenance, and chemical resistance. Its compact design, energy efficiency, and long lifespan make it suitable for laboratories, medical devices, and industrial processes where accuracy is paramount. However, its higher cost, potential maintenance challenges, and need for specialized knowledge may not make it the best fit for budget-conscious users or those without technical support.

If your application requires **precise fluid handling, chemical compatibility, and durability**, this pump is an excellent investment. If you are working with **high volumes, extreme pressures, or have limited technical resources**, you may need to consider alternatives or supplementary equipment.

### **Recommendation**

- **Buy the KNF PML17273-FF if:**

- You need a **reliable, low-maintenance pump** for laboratory, medical, or industrial applications.

- Your budget allows for a **premium, long-term solution** with strong after-sales support.

- The pump s **compact size and quiet operation** align with your environmental needs.

- **Consider alternatives if:**

- You require **higher flow rates or extreme pressure handling**, in which case a larger or different pump model may be necessary.

- Your budget is constrained, and you can find a **comparable generic pump** with similar performance at a lower cost.

- You lack **technical expertise** for installation and maintenance, as improper use could void warranties or reduce efficiency.

For most users seeking **precision, durability, and chemical resistance**, the KNF PML17273-FF is a strong recommendation. However, always verify compatibility with your specific fluids and system requirements before purchasing.

Details:

Info on Pump Head Material Options: PP. Valve Material Options: EPDM, FFKM. Removed working from a decommissioned system. KNF PML17273-FF 20 Micro Diaphragm Liquid Pump.

Motor Type Options: DC, Brushless DC. See pictures, comes as shown. Diaphragm Material Options: EPDM, PTFE. Max: 300 kPa 3 bar.

Type: PML17273-FF 20. Pump is used. Info on Pump: KNF. Specs: Flow Rate max.: 0.23 l/min.

part #: pml17273 price

  • $99.95

specifications valvplu:

  • brand: Knf
  • mpn: Pml17273-ff
  • model: Pml17273-ff 20
  • p max: 300 Kpa
  • uctrl: Vdc
  • motor type options: Dc, Brushless Dc
  • diaphragm material options: Epdm, Ptfe
  • suction height: Max.
  • valve material options: Epdm, Ffkm

returns valvplu:

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

general valvplu:

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

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seller valvplu:

  • rating: 99.8%
  • city: Fayette, Alabama
  • # reviews: 1998

shipping valvplu:

  • carrier: UPS, FedEx, USPS
  • type: Calculated
  • cost: $8.43
  • transit: 5-12 Days
  • service: UPS Ground Saver, FedEx Ground Economy, UPS Ground, USPS Ground Advantage
  • class: Economy, Standard

offer valvplu:

  • best offers: True
  • sold: 0
  • availability: In Stock
  • quantity: 3
  • options: Ship-to-home
  • started: March 27, 2026
p max: 300 kpa, uctrl: vdc, motor type options: dc, brushless dc, diaphragm material options: epdm, ptfe, suction height: max., valve material options: epdm, ffkm,
category: business & industrial > pumps pump accessories > vacuum pumps > diaphragm pumps, sku: 11812858647717632,
Knf PML17273 Is Similar To:
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1 offer $99.95 USD
  • Used. Offer #1 priced at $99.95 + $9.13 shipping estimate = $109.08* total. Motor Type Options: DC, Brushless DC. Pump is used.+$9.13 shipping

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