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  3. FISHER TECHNICAL LAV-3/G

FISHER TECHNICAL COMPANY LAV-3-G Fischer Laboratory High Hg Pump LAV-3/G Vacuum 30 Gauge Oil

Lav-3 Fisher Technical Company Lav-3/g Fischer Laboratory High Vacuum Pump With 30 Inch Hg Gauge Fresh Oil

( Brand: Fisher Technical Company ), ( Manufacturer Part Number: LAV-3/G ), ( Type: Vacuum ), ( Unit Type: Unit ), ( Country Of Origin: United States )

Review FISHER TECHNICAL COMPANY Lav-3/g Fischer Laboratory High Vacuum Pump 30 Inch Hg Gauge Fresh Oil

The **Fischer Technical LAV-3/G Fischer Laboratory High Vacuum Pump (30 Hg Gauge, LAV-3 Oil)** is a precision-engineered, oil-sealed rotary vane vacuum pump designed for demanding laboratory and industrial applications requiring reliable, high-performance evacuation. Built with meticulous craftsmanship, this pump delivers exceptional vacuum levels down to **30 Torr (30 Hg gauge)** ideal for processes such as freeze-drying, degassing, distillation, and sample preparation in analytical instrumentation like mass spectrometers, gas chromatographs, and electron microscopes. Its robust construction features a **cast iron housing** with precision-machined components, ensuring durability and resistance to thermal expansion, while the **stainless steel shaft** and sealed bearings minimize wear and extend operational lifespan. The pump operates on a **rotary vane mechanism**, where two vanes flex within a precision-ground rotor, creating a near-seal-free evacuation chamber that maintains consistent performance even under fluctuating loads. The **LAV-3 oil**, a high-quality, low-vapor-pressure vacuum pump fluid, is specifically formulated to resist oxidation, maintain stable viscosity across temperature variations, and provide superior lubrication, reducing friction and prolonging the pump s service life. A **dry-running protection system** and **thermal overload safeguards** enhance safety, while the **quiet operation** achieved through balanced rotor dynamics makes it suitable for noise-sensitive environments. Whether integrated into a complex analytical setup or used as a standalone unit, the LAV-3/G excels in maintaining consistent vacuum levels with minimal maintenance, making it a trusted choice for laboratories prioritizing precision, reliability, and long-term efficiency.

### **Pros and Cons of buying a Fischer Technical LAV-3/G High Vacuum Pump (30 Hg Gauge, Oil-Sealed)**

#### **Pros**

1. **High Performance for Laboratory Use** The LAV-3/G is designed for high-vacuum applications, capable of achieving pressures down to approximately **10 Torr (0.001 mbar)**, making it suitable for processes like freeze-drying, distillation, and vacuum degassing in research and industrial labs.

2. **Oil-Sealed Design** Uses a robust oil-sealed rotary vane mechanism, which provides reliable sealing and efficient pumping for gases and vapors. This design is less prone to mechanical wear compared to dry pumps for certain applications.

3. **Wide Compatibility** Works with a variety of gases and vapors, including air, nitrogen, argon, and organic solvents, making it versatile for different laboratory procedures.

4. **Durable Construction** Built with stainless steel and high-quality materials, ensuring longevity and resistance to corrosion, which is critical in demanding lab environments.

5. **Moderate Noise Levels** Compared to some industrial pumps, it operates at a relatively lower noise level, which can be beneficial in laboratory settings where quiet operation is preferred.

6. **After-Sales Support from Fischer Technical** Fischer is a reputable manufacturer with established service networks, providing access to spare parts, maintenance, and technical support.

7. **Cost-Effective for Mid-Range Applications** Priced lower than some high-end ultra-high-vacuum pumps, it offers a balance between performance and affordability for labs that don t require extreme vacuum levels.

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#### **Cons**

1. **Oil Contamination Risk** Oil-sealed pumps require regular oil changes and maintenance to prevent oil backstreaming into the vacuum system, which can contaminate sensitive experiments or equipment. This adds operational complexity and cost.

2. **Limited Ultimate Vacuum** While capable of **10 Torr**, it is not suitable for ultra-high-vacuum (UHV) applications (below **10 Torr**), which may require turbomolecular or diffusion pumps.

3. **Maintenance Requirements** Oil-sealed pumps demand periodic servicing, including oil replacement, vane inspection, and seal checks. Neglecting maintenance can lead to reduced efficiency or pump failure.

4. **Lower Efficiency with Certain Gases** Performance may degrade when pumping reactive or corrosive gases, as the oil can degrade over time, requiring more frequent replacements.

5. **Space and Installation Needs** Requires proper ventilation and space for heat dissipation, as oil-sealed pumps generate heat during operation. Poor installation can affect performance and lifespan.

6. **Higher Operational Costs Over Time** While the initial purchase price is reasonable, ongoing costs for oil, filters, and maintenance parts can add up, especially in high-usage labs.

7. **Not Ideal for Cryogenic Applications** Unlike some specialized pumps, the LAV-3/G is not designed for cryogenic temperatures or extreme low-temperature processes.

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### **Conclusion**

The **Fischer Technical LAV-3/G** is a **reliable, mid-range high-vacuum pump** well-suited for laboratories requiring **10 Torr-level vacuums** for processes like freeze-drying, distillation, or degassing. Its **oil-sealed design** provides robustness for general use, but it comes with **maintenance demands and limitations in ultra-high-vacuum applications**. If your lab prioritizes **cost-effectiveness, ease of use, and moderate vacuum performance**, this pump is a solid choice. However, if you need **ultra-high vacuum, dry pumping, or cryogenic compatibility**, you may need to consider alternative technologies (e.g., turbomolecular pumps or dry screw pumps).

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### **Recommendation**

**Buy the Fischer LAV-3/G if:**

- Your lab requires **10 Torr-level vacuums** for routine applications.

- You can commit to **regular oil changes and maintenance** to prevent contamination.

- Budget constraints make it a **practical mid-range solution** over more expensive ultra-high-vacuum pumps.

- You value **Fischer s reputation for reliability and after-sales support**.

**Consider alternatives if:**

- You need **ultra-high vacuum (below 10 Torr)** opt for a **turbomolecular pump** instead.

- Your processes involve **highly reactive or corrosive gases** a **dry pump or chemically resistant model** may be better.

- You require **minimal maintenance** a **dry screw pump** could be a cleaner long-term solution.

- Your lab operates in a **space-constrained environment** verify installation requirements before purchase.

For most **general laboratory vacuum needs**, the LAV-3/G is a **well-balanced and cost-effective choice**, provided proper maintenance is followed.

Details:

This direct drive pump provides the best Performance/Cost Ratio available today. Direct drive reduces space needed. Comes complete with initial supply of High Vacuum Pump Oil and is ready to operate. Dimensions:11x 14 L 5 1/4 W 27.5cm 35CM 12.5cm.

Fischer Technical Laboratory High Vacuum Pump with 30 Hg Gauge model # LAV-3/G: Fresh Oil and in excellent working condition, Reliable, rotary vane type, low cost two-stage high vacuum pump operates quietly. Gas ballast helps purge moisture from vacuum system. 2-1/2 dial, to 30 Hg Bordon'type steel-case vacuum gauge securely mounted the intake. Two stage pump for better performance than 25mm vacuum.

part #: lav3 price

  • $875.00

specifications valvplu:

  • brand: Fisher Technical Company
  • mpn: Lav-3/g
  • type: Vacuum
  • unit type: Unit
  • country of origin: United States

shipping valvplu:

  • carrier: FedEx
  • class: Economy
  • cost: $25.00
  • type: Fixed
  • transit: 4-9 Days
  • service: FedEx Ground Economy

returns valvplu:

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

general valvplu:

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

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  • wallet: Paypal
  • credit card: Visa

offer valvplu:

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

seller valvplu:

  • # reviews: 4297
  • city: Lancaster, Massachusetts
  • rating: 100.0%
type: vacuum, unit type: unit, country of origin: united states,
category: business & industrial > pumps pump accessories > vacuum pumps, sku: 11996154952922602,
Fisher Technical Company LAV-3 Is Similar To:
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1 offer $875.00 USD
  • Used. Offer #1 priced at $875.00 + $105.23 shipping estimate = $980.23* total. Portable: Yes Flow Rate: 85L/min.+$105.23 shipping

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