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ULVAC Pumps for Deep Vacuum and High-Performance Laboratory Applications

 

ULVAC Pumps covers ULVAC Inc. (Japan) laboratory vacuum pumps available through MBP, including oil-sealed rotary vane pumps for deep vacuum below 1 mbar, dry vacuum pumps for oil-free deep vacuum applications, and scroll pumps for moderate to deep oil-free vacuum. ULVAC pumps are appropriate when the required vacuum level is below what oil-free diaphragm pumps can achieve, covering applications including high-vacuum instrument backing, lyophilization, thin-film deposition, and vacuum manifold systems. Academic and core laboratories sourcing deep-vacuum solutions can benefit from guidance when selecting pump types based on target vacuum level, oil-free requirements, and application compatibility.

Looking for a ULVAC vacuum pump system? Contact customerservice@mbpinc.net for expert guidance on selecting the right pump type, vacuum range, and configuration for your deep-vacuum laboratory applications.

ULVAC Pumps

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ULVAC DTC-41 1.6 cfm 2-Stage Chemical-Duty Diaphragm Pump
List Price:
USD2,945.95 - USD2,945.95
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USD2,104.25 - USD2,104.25
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ULVAC Oil-Free Diaphragm Pump
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USD1,582.70 - USD4,641.70
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USD1,130.50 - USD3,315.50
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ULVAC UDP-6 6 cfm Full Chemical-Resistant 2-Head Diaphragm Pump
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USD5,552.75
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USD3,966.25
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What are ULVAC vacuum pumps?

 

ULVAC Inc. is a Japanese vacuum technology manufacturer offering a range of vacuum pumps spanning from oil-sealed rotary vane pumps for deep roughing vacuum to dry scroll pumps and high-vacuum turbomolecular pumps for ultra-high vacuum applications. In laboratory use, ULVAC rotary vane pumps such as the GLD series provide deep roughing vacuum in the 0.0001–0.1 mbar range, substantially below oil-free diaphragm pumps. These are used for lyophilizer rough vacuum, turbomolecular backing, and deep vacuum applications requiring high performance.

 

What you will find:

 

  • Two-stage chemical-duty diaphragm pumps delivering a steady 1.6 CFM flow rate with robust anti-corrosive materials to handle harsh laboratory vapors.

  • Oil-free diaphragm configurations designed to provide reliable, clean vacuum performance across routine filtration and evaporation workflows without risk of oil contamination.

  • High-capacity, fully chemical-resistant two-head diaphragm systems engineered to deliver a powerful 6 CFM flow rate for demanding industrial scale and high-volume processes.

 

How to choose an ULVAC vacuum pump

 

Use rotary vane pumps for deep-vacuum roughing systems

ULVAC rotary vane pumps are used as roughing pumps in two-stage systems where a turbomolecular pump takes over after the system reaches ~0.01–0.1 mbar.

Consider oil requirements

Oil-sealed rotary vane pumps require regular oil changes and protection from solvent vapors using cold traps or molecular sieve traps to prevent contamination and extend pump life.

Consider dry scroll pumps for oil-free operation

ULVAC dry scroll pumps provide oil-free vacuum for applications requiring clean operation where oil contamination must be avoided.

Match pump capacity to instrument requirements

Pump selection should match required pumping speed and ultimate vacuum specified by high-vacuum instruments to ensure stable operation and reasonable evacuation time.

Consider noise, heat, and exhaust handling

Rotary vane pumps generate heat, noise, and oil vapor exhaust, which must be properly ventilated or routed through exhaust systems or fume hoods.

 

Specifications context

 

ULVAC GLD series rotary vane pumps are widely used as roughing pumps in analytical instruments and vacuum coating systems, offering pumping speeds from a few liters per minute to tens of liters per minute with very deep ultimate vacuum performance. As of 2026, ULVAC remains a standard choice for mass spectrometry systems, electron microscopy, and high-vacuum laboratory applications.

Searching for reliable ULVAC hardware for your lab? The MBP team is ready to assist—reach out today for a personalized quote on the specific pump model you require.

FAQ

An ULVAC rotary vane or dry pump is needed when your application requires vacuum levels below approximately 1 mbar, which oil-free diaphragm pumps from Vacuubrand or Welch typically cannot reliably achieve. Common applications requiring deep vacuum include backing a turbomolecular pump for high-vacuum instruments, lyophilizer rough vacuum, thin-film deposition chambers, and other systems where deep roughing vacuum is specified by the instrument manufacturer.
A roughing pump brings a vacuum system from atmospheric pressure down to rough vacuum, typically 0.01–0.1 mbar, before a turbomolecular pump takes over to achieve very high or ultra-high vacuum. ULVAC rotary vane pumps are commonly specified for this role because they achieve the required roughing vacuum level quickly and maintain it reliably, providing the rough vacuum inlet condition that turbomolecular pumps require to operate.
ULVAC oil-sealed rotary vane pumps require regular oil changes, typically every 2000–4000 hours of operation or annually depending on the chemical exposure and operating environment, using the manufacturer's specified pump oil grade. The oil should be checked regularly for discoloration or contamination from solvent or water vapor, which indicates that upstream trapping is insufficient and oil change intervals may need to be shortened.
Solvent vapor and corrosive gas entering the oil degrade the oil's viscosity and lubricating properties, accelerate oxidation, and can damage pump seals and vane surfaces, leading to reduced pumping speed and ultimate vacuum. A cold trap cooled with dry ice or liquid nitrogen placed upstream of the pump condenses most solvent vapors before they reach the oil, and a molecular sieve or activated alumina trap captures water vapor and corrosive gases.
ULVAC oil-sealed rotary vane pumps use oil to lubricate and seal the rotating vane, achieving very deep ultimate vacuum levels of 0.0001–0.1 mbar, while ULVAC dry scroll pumps use interlocking spiral scrolls without oil to achieve moderate deep vacuum of approximately 0.5–1 mbar without any oil contamination risk. Dry scroll pumps are appropriate when oil-free operation is required but deeper vacuum than diaphragm pumps can provide is needed.
ULVAC oil-sealed rotary vane pumps produce oil mist in their exhaust even with internal oil mist separators, and this exhaust should be vented to a ventilated area, exhaust manifold, or fume hood rather than discharging directly into the lab atmosphere to prevent oil aerosol accumulation. Dry pump and scroll pump models have cleaner exhausts but should still be vented appropriately if processing solvent or reactive vapors.
Yes, ULVAC oil-sealed rotary vane pumps are commonly used as the roughing vacuum pump in lyophilizer (freeze-dryer) systems, providing the deep vacuum needed for efficient water sublimation at low temperature. The lyophilizer condenser traps most water vapor from the product before it reaches the pump, but a cold trap between the lyophilizer and the pump provides additional protection against moisture entering the pump oil.
Yes, MBP offers competitive pricing for ULVAC rotary vane, dry, and scroll vacuum pumps, with specialist support for matching pump type and capacity to your instrument's vacuum requirements. Contact MBP's US office in Houston, Texas, for pricing in both USD and CAD.
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