DURADRY DD 160Pumping speed 160 m³/hUltimate pressure 0.01 mbar
DURADRY DD 250 3Ph 380-460 V 50/60 Hz, LEYBONOL LVO 410 (PFPE)
The Leybold DURADRY DD 250 is a dry-compressing, water-cooled screw vacuum pump with 250 m³/h peak pumping speed and < 1 × 10⁻² mbar ultimate pressure – with the same dimensions as the DD 160. Ehrler & Beck supplies the DURADRY DD 250 in two variants with matching accessories and service.
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- Pumping speed 250 m³/h 50 Hz 250 m³/h 60 Hz
- Ultimate pressure 0.01 mbar
- Rated motor power 7.5 kW 50 Hz 7.5 kW 60 Hz
| Variant | Part number |
|---|---|
| 3Ph 380-460 V 50/60 Hz, LEYBONOL LVO 410 (PFPE) (selected) | 18100250V11CQV |
| 3Ph 200-240 V 50/60 Hz, LEYBONOL LVO 410 (PFPE) | 18100250V16CQV |
Leybold DURADRY DD 250 – more pumping speed on the same footprint
The DURADRY DD 250 increases the peak pumping speed to 250 m³/h without getting bigger: 1265 × 520 × 566 mm as on the DD 160, at 315 kg. The ultimate pressure is < 1 × 10⁻² mbar; the motor is rated at 7.5 kW, the power consumption is 7.5 kW at full load and 4.0 kW at ultimate pressure. Connections: DN 63 ISO-K on the inlet side, DN 40 ISO-KF on the outlet side.Easy to operate
The Plug-&-Go design allows various connection options; operation is via a separate control cabinet, which also simplifies servicing. The Smart Drive monitors rotor frequency and temperatures and protects the pump automatically. According to Leybold, improved heat distribution, temperature control and dust tolerance ensure efficient operation at less than 64 dB(A).Typical applications
Coating systems, crystal pulling, battery production (filling and drying), plasma cleaning and solar module production.Variants of the DURADRY DD 250
The DURADRY DD 250 is available from Ehrler & Beck in two variants (part numbers 18100250V11CQV, 18100250V16CQV). The motor power is 7.5 kW for all variants; the mains voltage ranges from 200–240 V to 380–460 V (50/60 Hz). All versions are filled with PFPE lubricant LEYBONOL LVO 410; the weight is 315 kg.Features of the DURADRY series
- Patented screw rotor profile: dry compression, maximum rotor speed 6600 min⁻¹
- PFPE-ready: LEYBONOL LVO 410 lubricant for high temperatures, high oxygen content and mildly corrosive conditions
- Hermetically sealed: dynamic seal, no oil leakage
- Stable thermal management: stainless steel cooling system against corrosion
- Quiet: less than 64 dB(A) with silencer, low vibration
- Smart Drive: monitors rotor frequency and temperatures for self-protection
| Pumping speed 50Hz | 250 |
|---|---|
| Pumping speed 60Hz | 250 |
| Ultimate pressure | 0.01 |
| Rated motor power 50Hz | 7.5 |
| Rated motor power 60Hz | 7.5 |
| Weight | 315 |
| Length | 126.5 |
| Width | 52 |
| Height | 56.6 |
| Inlet connection flange | DN 63 ISO-K |
| Outlet connection flange | DN 40 ISO-KF |
| Noise level | 64 dB(A) |
| Cooling method | Water cooling |
| Oil type | Oil-free |
Additional technical data
| Technical data | Value |
|---|---|
| Peak pumping speed | 250 m³/h |
| Ultimate pressure (shaft seal purge gas only) | < 1 × 10⁻² mbar |
| Max. continuous inlet pressure | 1000 mbar (speed limited if necessary) |
| Max. exhaust back pressure | 1.2 bar (abs.) |
| Water vapour capacity | 3.4 kg/h |
| Rated motor power | 7.5 kW |
| Power consumption at full load | 7.5 kW |
| Power consumption at ultimate pressure | 4.0 kW |
| Mains voltage | 380-460 V ± 10 %, 50/60 Hz, 3-phase |
| Rated current | 14–14 A |
| Max. rotor speed | 6600 min⁻¹ |
| Lubricant | LEYBONOL LVO 410 (PFPE), filling quantity 0.7 l |
| Cooling | Water |
| Cooling water connection | G 3/8" female thread |
| Cooling water flow | 4 l/min |
| Cooling water temperature | 5 to 40 °C |
| Cooling water pressure, max. | 6.9 bar(g) |
| Purge gas connection | G 1/2" female thread |
| Purge gas pressure | 2.5 to 6.9 bar(g) |
| Shaft seal purge gas (continuous) | max. 12 l/min |
| Gas ballast (manually adjustable) | 0 to 50 l/min |
| Noise level | < 64 dB(A) with silencer |
| Vibration level at the inlet | < 1.5 mm/s |
| Permissible ambient temperature | 5 to 40 °C |
| Installation altitude, max. | 2000 m |
| Protection class of electrical system | IP2X (IEC 60529) |
| Materials in the gas path | Spheroidal graphite cast iron (pump, shafts, rotors), PTFE and fluoroelastomer (seals) |
| Product name | Part number |
|---|---|
| LEYBONOL LVO 410 (PFPE), 1 litre | L41001 |
| Cubicle vent filter kit DD 160 / DD 250 | 3490790547 |
| Product name | Part number |
|---|---|
| Outlet non-return valve kit DN 40 ISO-KF (spring-loaded) | 115005A02 |
| Cleanable silencer DN 40 ISO-KF for DD 160/250 | M58810140 |
| Cleanable silencer DN 40 ISO-KF with bottom drain for DD 160/250 | M58810142 |
| Inlet dust filter DN 63 ISO-K for DD 160/250 | M58810100 |
| Inlet liquid separator DN 63 ISO-K for DD 160/250 | M58810120 |
| Multi Ethernet card (PROFINET, Ethernet, EtherNet/IP) | 0017000176 |
| PROFIBUS DP module | 112005A78 |
| Relay module (digital output) | 112005A70 |
| External display (LCD operator panel) | 112005A80 |
DURADRY DD 160Pumping speed 160 m³/hUltimate pressure 0.01 mbarDURADRY DD 450Pumping speed 450 m³/hUltimate pressure 0.01 mbar