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YBI-FLOW
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+886-4-27065206
YLL Series Liquid Ring Vacuum Pump (With Motor Carrier Design)
YLC Series Liquid Ring Vacuum Pump (In Close coupled design) are displacement pumps of uncomplicated and robust construction with the following particular features：
– Nearly isothermal compression
– Oil-free, as no lubrication in the working chamber therefore non-polluting
– Capable of handling of nearly all gases and vapour
– Small quantities of entrained liquid can be handled
– Easy maintenance and reliable operation
– Low noise and nearly free from vibration
– Wide choice of materials, therefore applicable nearly everywhere
– Shaft not in contact with the medium
– Protection against cavitation as standard
– Incorporated dirt drain，no metallic contact of the rotating parts.
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Technical Details
- General Technical Data
- Material Design
- Applications
- The combination of several limiting values is not admissible.
| Pump Type | YLL90 | YLL125 | YLL150 | YLL250 | YLL325 | YLL425 | |
| Synchronous speed | 50 Hz | 1500rpm | |||||
| 60 Hz | 1750rpm | ||||||
| Max. compression over atmospheric pressure | 0.3bar | ||||||
| Max. admissible pressure difference | 1.1bar | ||||||
| Test pressure above atmospheric pressure | 3bar | ||||||
|
Moment of inertia of the rotating pump parts and water filling (kg .m²) |
0.035 | 0.053 | 0.069 | 0.097 | 0.14 | 0.21 | |
| Noise level at a suction pressure of 80 mbar (dB(A)) | 72 | 76 | 78 | ||||
| Max. gas temperature | Dry gas | 200°C | |||||
| Saturated gas | 100°C | ||||||
| Service liquid | max. recommended temperature for water as working liquid |
40°C | |||||
| max. admissible temperature for other suitable working liquids |
80°C | ||||||
| max. kinematic viscosity | 4 mm²/s | ||||||
| max. density | 1200 kg/m³ | ||||||
| volume up to shaft level | 2.4L | 2.8L | 3.2L | 4.0L | 4.2L | 4.7L | |
| Pump Type | Material Design | |||
| C250S304SM | S304S304SM | S316S316SM | ||
| YLL90,125,150,250,325,425 | ● | ● | ● | |
| Component | Material | |||
| Casing | HT200 | 304 | 316 | |
| Central body | HT250 | 304 | 316 | |
| Guide disc | HT200 | 304 | 316 | |
| Vane wheel impeller | 304 | 304 | 316 | |
| Mechanical seal | X：Ceramic | P：Perbunan | ||
| S：SiC | M：PTFE encapsulated | |||
| A：Carbon | F：304 | |||
| V：Vinton | G：316 | |||
- Handling and exhausting of dry and humid gases; entrained liquid can be handled during normal duty. The pumps are applied in all fields where a pressure of 33 to 900 mbar must be generated
