SED-ZKB-J — Pompe à vide
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SED-ZKB-J two-stage rotary-vane oil-sealed vacuum pump family (4 sizes: 1.1/1.5/2.2/3.7 kW) with direct-coupled TEFC motor. Ultimate pressure 5×10⁻¹ Pa (gas-ballast closed) / 2.0 Pa (gas-ballast open). KF40 inlet/outlet.
Fonctionnement
Two-stage rotary-vane mechanism: rotor vanes sweep oil-sealed crescent chambers in series, drawing gas in through the KF40 inlet, compressing it through high- and low-vacuum stages, and discharging through an oil mist demister. A gas-ballast valve admits a controlled trickle of air to keep condensable vapors (mainly water) above their dew point so they exit with the exhaust instead of contaminating the oil.