Comparison ledger
Pfeiffer DUO 20 M Vacuum, Pfeiffer Duo 35 M Vacuum, side by side. Every value shown is drawn from the cited encyclopedia entries.
| Attribute | DUO 20 M VacuumPfeiffer | Duo 35 M VacuumPfeiffer |
|---|---|---|
| OEM | Pfeiffer | Pfeiffer |
| Category | — | — |
| Wafer size | — | — |
| Process node | — | — |
| Introduced | — | — |
| Production run | — | — |
| Lifecycle | — | — |
| Lifecycle milestones | — | — |
| Control system | — | — |
| Generation | — | — |
| Family | Pfeiffer Duo | Pfeiffer Duo |
| Cited variants |
| — |
| Specifications | ||
| Oil | P3[2] | — |
| Max flow | 24.0 m³/h[2] | — |
| Speed | 1800 1/min[2] | — |
| Mass | 42.5 kg[3] | — |
| Configuration | Pump needs complete overhaul[2] | — |
| Pump type | Dual-stage, high-performance rotary vane pump[1] | — |
| Applications | Low and medium vacuum applications[1] | — |
| Pumping speed at 50 Hz | 20 m3/h[1] | — |
| Pumping speed at 60 Hz | 24 m3/h[1] | — |
| Flange (in) | DN 25 ISO-KF[1] | DN 40 ISO-KF[6] |
| Flange (out) | DN 25 ISO-KF[1] | DN 40 ISO-KF[6] |
| Operating fluid | P3[1] | P3[6] |
| Operating fluid filling | 1.1 l[1] | 3.2 l[6] |
| Rated power 50 Hz | 0.75 kW[1] | — |
| Rated power 60 Hz | 0.90 kW[1] | — |
| Rotation speed at 50 Hz | 1500 min-1[1] | — |
| Rotation speed at 60 Hz | 1800 min-1[1] | — |
| Ultimate pressure with gas ballast | 4 × 10^-3 hPa[1] | <= 3 · 10-3 hPa[6] |
| Ultimate pressure without gas ballast | 2 × 10^-3 hPa[1] | <= 2 · 10-3 hPa[6] |
| Weight | 44 kg[1] | 70 kg[6] |
| Inlet flange | DN 25 ISO-KF[1] | — |
| Outlet flange | DN 25 ISO-KF[1] | — |
| Magnetic coupling | Yes[1] | — |
| Integrated gas ballast | Yes[1] | — |
| HV safety valve | Integrated[4] | — |
| Motor type | 1-phase motor[1] | 3-phase motor[6] |
| Voltage | 100-110 V at 50 Hz; 100-120 V at 60 Hz[1] | — |
| Pumping Speed S(N2) | — | 36.0 m3/h[5] |
| Max Speed (n) | — | 1800 rpm[5] |
| Oil Type | — | Pfeiffer P3 vacuum oil[5] |
| Pumping speed | — | up to 36 m3/h[6] |
| Motor protection | — | 3TF[6] |
| Voltage, 50 Hz | — | 230/400 V (± 5%)[6] |
| Voltage, 60 Hz | — | 265/460 V (± 5%)[6] |
| Rotation speed, 50 Hz | — | 1500 min-1[6] |
| Rotation speed, 60 Hz | — | 1800 min-1[6] |
| Rated power, 50 Hz | — | 1.1 kW[6] |
| Rated power, 60 Hz | — | 1.3 kW[6] |
| Dimensions | — | A 704 mm; B 312 mm; C 66 mm[6] |
| Protection category | — | IP 55[6] |