Leybold Trivac D1.6B Rotary Vane Vacuum Pump KF25 NW25 1.6 m3/h 115/230V 50/60Hz

Leybold Trivac D1.6B Rotary Vane Vacuum Pump KF25 NW25 1.6 m3/h 115/230V 50/60Hz

The Leybold Trivac D1.6B is a compact, single-stage rotary vane vacuum pump from Leybold Vakuum GmbH of Cologne, Germany. It is designed for continuous-duty rough and medium vacuum applications, achieving an ultimate pressure of less than 4×10⁻⁴ mbar with a volume flow rate of 1.6 m³/h. The pump is driven by a Groschopp OWK 90-60 single-phase motor rated at 100/120W with dual-voltage capability (100–115V or 200–230V) and IP54 ingress protection. This unit is being sold as-is and requires rebuilding before use.

Specifications & What's Included

• Make: Leybold Vakuum GmbH — Made in Germany
• Series: Trivac
• Model: D1.6B
• Pump Type: Single-stage rotary vane vacuum pump
• Volume Flow Rate: 1.6 m³/h (~0.94 CFM)
• Ultimate Pressure: < 4×10⁻⁴ mbar
• Inlet Port: KF25 (NW25) — cap missing
• Outlet Port: KF25 (NW25) — cap missing
• Motor Brand: Groschopp (Germany)
• Motor Model: OWK 90-60 (WK1483402)
• Motor Voltage: 100–115V / 200–230V AC (dual voltage)
• Motor Frequency: 50/60 Hz
• Motor Power: 100W (50Hz) / 120W (60Hz)
• Motor Speed: 2800 RPM (50Hz) / 3400 RPM (60Hz)
• Motor Current: 1.8–2.6A at 100–115V; 0.9–1.3A at 200–230V
• Run Capacitor: ICAR brand (visible in junction box)
• Motor IP Rating: IP54
• Motor Protection: Thermal protector (built-in)
• Certifications: CE, TÜV GS
• Power Cord: Standard 3-prong NEMA 5-15 plug (attached)
• Included: Pump with motor and power cord only
• Not included: KF25 inlet cap, KF25 outlet cap
• Oil fill port covered with aluminum foil (no fill cap present)
• Condition: As-is — needs rebuilding; not tested

Applications

The Leybold Trivac series of rotary vane vacuum pumps has long been a standard in laboratory, scientific, and industrial vacuum applications. The D1.6B is a small-displacement model suited for applications requiring clean, oil-sealed rough vacuum down to the medium-vacuum range — including vacuum filtration, freeze dryers, rotary evaporators, mass spectrometer fore-vacuum, thin-film deposition backing pumps, and general laboratory vacuum lines. The KF25 (NW25) quick-clamp flange connections are the standard fitting used throughout the scientific and semiconductor industries, making this pump straightforward to integrate into existing vacuum systems. Leybold Trivac pumps from this era were manufactured in Germany and are known for robust construction and a wide availability of rebuild kits, seals, vanes, and oil — making a pump in this condition a viable candidate for restoration by an experienced technician.