The VRI-4 Oil Rotary Vane Vacuum Pump is the compact entry model of the VRI/VRD Series — delivering dual-stage rotary vane vacuum pumping at 4 m³/h with a 1×10⁻¹ Pa ultimate partial pressure (3 Pa ultimate total pressure) for stable, reliable vacuum supply to laboratory vacuum ovens, drying systems, chemical processing setups, and general vacuum applications. The VRI-4 integrates key performance features that distinguish it from basic rotary vane designs: a built-in gear pump ensuring continuous steady oil supply to the rotating vanes for sustained vacuum performance, an electric solenoid valve that automatically prevents oil backflow into the connected vacuum system during power failure or shutdown, IP44 environmental protection, and single-phase 0.37 kW motor at 1440 rpm — all within a compact 337 × 138 × 244 mm format weighing only 11 kg. Enquire about the VRI-4 today.
The VRI-8 Oil Rotary Vane Vacuum Pump doubles the flow capacity of the compact VRI-4 — delivering 8 m³/h dual-stage rotary vane vacuum pumping for laboratory and industrial vacuum applications requiring faster chamber evacuation, higher sustained gas load handling, or simultaneous vacuum supply to multiple connected systems. Maintaining the VRI-4's core feature set of dual-stage architecture, built-in gear pump for steady oil supply, electric solenoid valve for oil backflow prevention, integrated pump-motor design, and IP44 environmental protection — the VRI-8 adds the higher 0.55 kW motor power and 0.5L oil capacity needed for the increased continuous duty demands of 8 m³/h operation. With 1×10⁻¹ Pa ultimate partial pressure, 3 Pa total pressure, KF16 connections, ≤65 dB noise, and 17 kg compact weight — the VRI-8 serves vacuum drying systems, pharmaceutical applications, chemical processing, and industrial vacuum processes requiring reliable higher-flow deep vacuum supply.
The VRD-16 Oil Rotary Vane Vacuum Pump is the high-performance model of the VRI/VRD Series — introducing four key performance and specification advances over the VRI models that position it as the industrial and demanding research laboratory vacuum pump of choice. First, 16 m³/h displacement for maximum-flow vacuum supply. Second, significantly improved 4×10⁻² Pa ultimate partial pressure — the deepest vacuum in the series. Third, fluororubber seals throughout for enhanced corrosion resistance against aggressive chemical vapours. Fourth, a double anti-return oil structure that prevents oil contamination more effectively than single-valve systems. Combined with an advanced exhaust valve for extended service life, KF25 inlet for lower pressure drop at high flow, single or three-phase power options, and a remarkably quiet ≤58 dB noise level — the VRD-16 is the definitive high-performance vacuum pump for industrial vacuum systems, research laboratory high-flow applications, chemical and pharmaceutical processing, and demanding vacuum oven service. Enquire today.