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The Leybold TRIVAC D 4 B is a well-proven dual-stage, oil-sealed rotary vane vacuum pump designed for dependable performance in industrial and research applications.
This unit has been professionally refurbished by the manufacturer to factory standards and is delivered with a full 12-month manufacturer warranty, ensuring reliability, operational safety and long-term value.
Proven Vacuum Performance
The TRIVAC D 4 B provides a nominal pumping speed of 4.8 m³/h and achieves an ultimate partial pressure of < 1 × 10⁻⁴ mbar, making it suitable for rough and medium vacuum applications as well as backing pump duties in high vacuum systems.
With water vapor tolerance up to 95 g/h, the pump is well suited for laboratory processes, vacuum drying, analytical systems and general industrial vacuum applications.
Advanced and Durable Design
The TRIVAC B series is known worldwide for its robust construction and long service life. Key features include:
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Dual-stage rotary vane principle
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Integrated anti-suckback valve preventing oil backstreaming
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Gas ballast valve for handling condensable vapors
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Built-in oil pump for forced bearing lubrication
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Continuous operation up to 1000 mbar with external oil mist filter
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ISO-KF 16 connection ports
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Motor protection IP54/IP55
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Compact, air-cooled and service-friendly design
The pump is designed for easy maintenance with exchangeable inner sections and compatibility with mechanical and chemical oil filters.
Applications
The TRIVAC D 4 B is widely used in:
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Laboratory vacuum systems
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Vacuum drying cabinets
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Backing pumps for turbomolecular and diffusion pumps
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Analytical and environmental engineering
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Healthcare and research applications
Why Choose This Unit?
✔ Factory refurbished by Leybold
✔ Tested and certified to OEM standards
✔ Covered by a 12-month manufacturer warranty
✔ Proven, energy-efficient and low-noise operation
✔ Immediate availability without new-equipment lead times
This refurbished TRIVAC D 4 B combines the reliability of original Leybold engineering with the economic advantage of a professionally restored unit.