Since 1983, Girovac has been a mainstay in the UK vacuum industry. We have seen technology evolve, brands merge, and applications become increasingly sophisticated. Sourcing vacuum equipment, whether for a laboratory, a manufacturing line, or a specialist freeze-drying application, requires a balance of technical precision and commercial pragmatism.
If you are new to sourcing high vacuum equipment or are looking to upgrade your existing infrastructure, the following ten points serve as a foundational guide to making an informed investment.
1. Understand the Difference Between Medium and High Vacuum
Terminology in the vacuum industry is precise. "Medium vacuum" (often referred to as fine vacuum) typically covers the pressure range from 1 mbar down to 10⁻³ mbar. In this range, you will find most industrial processes such as vacuum degassing, distillation, and standard freeze-drying.
"High vacuum" (HV) extends from 10⁻³ mbar down to 10⁻⁷ mbar. Achieving and maintaining these levels requires significantly more sophisticated equipment. While a single-stage rotary vane pump may suffice for medium vacuum, high vacuum usually necessitates a multi-stage approach, often involving a primary backing pump and a secondary high-vacuum pump such as a turbomolecular or diffusion pump. Knowing exactly which level your process requires is the first step in avoiding over-specification or equipment failure.
2. New vs. Reconditioned Pumps: Weighing the Benefits
The decision between purchasing a brand-new unit or a reconditioned one is often a matter of lead time and budget. At Girovac, we maintain an extensive stock of reconditioned vacuum pumps, specialising in robust 1 and 2-stage oil-lubricated models.
Commonly requested models include the Edwards E2M5 and E2M18. These are industry-standard workhorses known for their reliability. When you purchase a reconditioned unit from us, it is not merely "checked"; it is fully serviced in our North Walsham workshop and supplied with a 6-month warranty (subject to proper use and maintenance). This provides a cost-effective alternative for businesses that need high-quality equipment without the premium price tag or the longer lead times of new factory orders.
3. Proper Sizing Matters: The Risk of Incorrect Capacity
It is a common misconception that "bigger is always better" when it comes to vacuum pumps. Oversizing a pump can lead to unnecessary energy consumption, increased noise, and higher maintenance costs. Conversely, undersizing a pump will result in long evacuation times and may prevent the system from ever reaching its required ultimate pressure.
We calculate the required pumping speed based on the volume of your chamber, the desired pump-down time, and the anticipated gas load (including outgassing from materials inside the vacuum). Our team provides expert advice to ensure your pump is sized correctly for your specific application, ensuring operational efficiency and longevity.
4. Why Service Support and Local Expertise Count
Buying a vacuum pump is only the beginning of its lifecycle. These are high-precision mechanical devices that operate under intense stress. Having access to local, hands-on expertise is vital for minimizing downtime.
Girovac operates from our dedicated workshop in North Walsham. We do not just sell boxes; we repair and service almost all major European brands. Whether it is a routine oil change, a major overhaul of a vacuum valve, or the calibration of a measuring instrument, our in-house engineering capabilities ensure that your equipment remains in peak condition. Dealing with a UK-based specialist means you avoid the logistical hurdles of international shipping for repairs.
5. Custom Systems vs. Off-the-Shelf Solutions
An off-the-shelf pump is often just one component of a larger requirement. Many industrial applications, particularly in research and development, require a bespoke setup.
Since 1983, we have specialized in custom system design. This includes the integration of vacuum chambers, specialized viewports, control systems, and specific manifolds. If your process requires more than just a standard pump, we can design and build a "total solution" that fits your footprint and technical requirements exactly.
6. The Importance of Spare Parts Availability
A vacuum system is only as reliable as its weakest seal. Even the most expensive pump will fail if a simple O-ring is compromised.
We maintain a comprehensive range of vacuum products, from minor components like O-rings and gaskets to complete vacuum systems and spares. We also supply cost-saving generic alternatives where appropriate, ensuring that maintenance does not become prohibitively expensive. Having these parts readily available in the UK is a significant advantage for maintenance engineers and facility managers tasked with keeping systems running 24/7.
7. MIL'S French-Engineered Pumps: The Premium Choice
As the UK distributor for MIL'S, we are proud to offer their full range of French-engineered vacuum pumps and systems. Since 1926, MIL'S has been at the forefront of vacuum technology, providing solutions for the medical, industrial, and laboratory sectors.
Their pumps are characterized by high build quality, exceptional performance, and ease of maintenance. When a project demands the highest standards of engineering and reliability, a MIL'S system is frequently our recommendation. We provide not only the new units but also the full range of authentic MIL'S spares and expert servicing.
8. The Value of Multi-Brand Expertise
In the vacuum industry, different brands excel in different niches. A distributor with experience across a wide spectrum of manufacturers offers an unbiased perspective on what will actually work for your application.
At Girovac, we service and supply major European brands including:
- Leybold
- Edwards
- VacuuBrand
- KNF
- GAST
- BUSCH
- RIETSCHLE
- PFEIFFER
This breadth of knowledge allows us to advise on the specific quirks and advantages of each brand, helping you select the right tool for the job regardless of the logo on the side.
9. Oil-Lubricated vs. Dry Vacuum Pumps
One of the most frequent questions we encounter is whether to go for an oil-lubricated or a "dry" (oil-free) pump.
Oil-lubricated pumps (like the rotary vane models) are generally more affordable and excellent at reaching deep vacuum levels. However, they require oil changes and there is a risk of oil vapour backstreaming into the system if not managed correctly.
Dry vacuum pumps (such as scroll or diaphragm pumps) eliminate the risk of oil contamination and have lower maintenance requirements. They are ideal for cleanroom environments and chemical laboratories but typically come with a higher initial capital cost. We can help you navigate this choice based on your tolerance for maintenance and your process's sensitivity to contamination.
10. Why 40+ Years of Expertise Matters
In an era of automated sales and faceless online marketplaces, there is no substitute for established industry standing. Girovac has been operating since 1983. Our partner, MIL'S, has been in operation since 1926.
This longevity represents a vast repository of practical knowledge. We have solved complex vacuum challenges for over four decades, specializing in everything from standard industrial pumps to complex freeze-dryer systems. When you contact us, you are speaking to experts who understand the history of the equipment and the future of the technology.
Conclusion: A Total Solution Approach
Selecting high vacuum equipment does not have to be a complicated process. By focusing on your actual vacuum requirements, considering the lifecycle costs of the equipment, and partnering with an expert who can provide ongoing service and spares, you can ensure a reliable and efficient operation.
Whether you need a single O-ring, a reconditioned Edwards pump, or a bespoke MIL'S high-vacuum system, our team is here to provide the "total solution."
For expert advice or a detailed quotation, please contact us at [email protected].