The Yamato N820G (product code 255161) is a chemically resistant, oil-free diaphragm vacuum pump and the recommended vacuum pump for the entire Yamato RE-series rotary evaporator line. Its PTFE-coated wetted parts stand up to aggressive and corrosive solvent vapors, and 100% oil-free operation keeps distillate and lab air clean. Adjustable speed control lets you dial the vacuum to the solvent being recovered.
Key Specifications
| Spec | Value |
| SKU | N820G |
| Yamato product code | 255161 (kit: N820GKIT adds vacuum hose 255297) |
| Type | Oil-free diaphragm vacuum pump |
| Applicable products | All Yamato RE-series rotary evaporators |
| Flow at atm. (min speed) | 9 l/min |
| Flow at atm. (max speed) | 20 l/min |
| Gas ballast (min speed) | ≤6 (closed) / ≤17 (open) mbar |
| Gas ballast (max speed) | ≤8 (closed) / ≤15 (open) mbar |
| Diaphragm material | PTFE-coated |
| Ambient range | +10 °C to +40 °C |
| Power | 100–240 V, 50/60 Hz, 0.66 A max |
| Dimensions (L×W×H) | 259 × 163 × 220 mm |
| Weight | 8.8 kg |
| List price | Request quote |
Compatibility
The N820G's Vacuum Pump Guide names its applicable products as all Yamato RE-series rotary evaporators, RE-202/212 and REV-202M/212M in every glassware (A/B/C) and bath (water/oil) configuration. It is the pump Yamato recommends in the rotary evaporator catalog. Paired with the VR102S vacuum controller and the Vacuum Pump Control Unit G (OVR26), the N820G can be regulated by rotation speed for controlled vacuum without a solenoid valve (limited modes). The N820GKIT adds the vacuum hose (255297).
Frequently Asked Questions
Which rotary evaporators does the N820G fit? All Yamato RE-series rotary evaporators, per the brochure's Vacuum Pump Guide. It is the recommended pump for the line.
Is it oil-free? Yes. It is a diaphragm pump with 100% oil-free operation and PTFE-coated wetted parts, suited to aggressive/corrosive solvent vapors.
Can it be vacuum-controlled? Yes, with the VR102S controller and the OVR26 Vacuum Pump Control Unit G, the N820G is regulated by rotation speed (limited operation modes).
What is the ultimate vacuum? The ultimate-vacuum figure was not legible in the source brochure table and is not asserted here. Request the datasheet at quote.
Ordering & Configuration
Confirm at quote whether you want the bare pump (255161 / N820G) or the N820GKIT with hose, and whether controlled vacuum (VR102S + OVR26) is required. Add to a quote with your RE rotary evaporator.
