Plastics extrusion · Vent & sizing
Vacuum Pump for Extruder
Extruder duty, sized right: barrel venting / devolatilisation and vacuum sizing tanks. Real Yash models, oil-free where it matters, ISO 9001:2015 and built in Faridabad since 1998.
- Duty
- barrel venting / devolatilisation and vacuum sizing tanks
- Airflow
- 200–1,000 m³/hr
- Vacuum
- −300 to −850 mbar
DTYWhere an extruder needs vacuum
An extruder uses vacuum at two stations. At the barrel vent it devolatilises the melt — pulling moisture, monomer and trapped gases out through a vent port so the product is void-free, which is a wet, vapour-laden vacuum job. Downstream on pipe and profile lines, the vacuum sizing (calibration) tank holds a steady vacuum that pulls the hot extrudate against the calibrator to set its dimensions, a continuous, forgiving flow duty. The venting service in particular carries volatiles and condensate that would foul a dry oil pump, so a liquid-ring pump — whose water seal handles the wet, condensable load — is the robust choice; a dry oil-free pump suits clean sizing-tank duty and vents that must stay contamination-free.
Yash liquid-ring YELV pumps take the wet, condensable venting duty in their stride, while YBDVP dry pumps hold clean vacuum on sizing tanks and clean vents. One supplier, ISO 9001:2015, continuous extrusion duty, built in Faridabad with the separators the vent service needs. Sized on line and vent rate, quoted in 24 hours.
MDLRecommended models
Real Yash models whose published specifications sit inside this machine's duty window. Every figure is from our catalogue — click any model number for its full datasheet.
Vacuum Pump
Full range →Liquid-ring vacuum for barrel venting / devolatilisation — the water seal absorbs moisture and volatiles that would foul a dry pump.
Dry Vacuum Pump (Only Vacuum)
Full range →Oil-free dry vacuum for clean vacuum-sizing tanks and clean vents — steady vacuum against the calibrator with nothing to contaminate.
SZESizing note
Size the vent pump on the volatile and moisture load at the vent port with a separator to catch condensate; size the sizing-tank pump on tank leakage to hold steady vacuum against the calibrator. Keep the two duties on separate pumps.
Indicative only — final selection depends on your exact duty point, altitude and air temperature. Send the numbers and an engineer confirms the model.
FAQVacuum Pump for Extruder — FAQs
- What vacuum pump is used on an extruder vent?
- Barrel venting pulls moisture, monomer and gases out of the melt, so the pump sees a wet, condensable load. A liquid-ring pump (YELV) with a separator handles that carryover reliably, where a dry or oil pump would foul. Size it on the volatile load at the vent port and your line rate.
- Is the vacuum sizing tank the same duty as the barrel vent?
- No — the sizing tank is a clean, steady vacuum that holds the extrudate against the calibrator, so a dry oil-free pump (YBDVP) suits it well. The barrel vent is wet and condensable and wants a liquid-ring pump. Keep them on separate pumps so neither compromises the other.
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RFQ / Request for Quotation
Sizing a vacuum pump for your Extruder?
Send your duty point (200–1,000 m³/hr at −300 to −850 mbar), the machine make and your site voltage — an engineer sizes the exact model and quotes within 24 hours.