Open Tank Ventilation Filters OTV series


Oil mist separators for gas and steam turbines



The ventilation of the lubrication oil tank of turbines or large bearings require the generation of a constant underpressure. Oil mist separators of the UPF-OTV series perfectly meet all technical requirements within the applicable emission and labour protection laws. The escape of oil during ventilation is reliably prevented.

Safe and reliable

Plant operators using the UT99 technology depend on an efficient separation and functional safety. We guarantee this permanently.

The UPF-OTV series includes standard products and a wide range of customised special designs. This way, for instance, highest safety requirements are met and a reliable operation is ensured even under especially adverse environmental conditions as they exist on off shore applications like oil rigs.

Clean working conditions

UT99 was commissioned by Alperia Vipower and Alperia Greenpower to retrofit oil mist separators on the turbines of the Glurns, Kastelbell and Laas hydropower plants. Further information on these power plants can be found here.

The UT99 oil mist separators "have reliably ensured an oil-free environment in the turbine halls since commissioning in the summer of 2022" (Gerhard Hell, responsible for the Glurns operation, Alperia Greenpower). The working environment is thus safer and the operation overall more environmentally friendly.

Model overview UPF-OTV

With the replacement of the Dynapure series (UF-AS-100, UF-AS-200, UF-AS-500, UF-AS-700, CH310) by the UPF series, UT99 continues to develop its oil mist separators. Thanks to the many configuration options of the oil mist separators, retrofitting existing power plants or retrofit solutions up to integration into the control system can be realized easily and cost-effectively.

Model Tank volume Flow rate
UPF-OTV-500-A1F* ≤ 5 m³ ≤ 100 m³/h
UPF-OTV-500-A2F* ≤ 10 m³ ≤ 200 m³/h
UPF-OTV-630-A2K* ≤ 16 m³ ≤ 300 m³/h
UPF-OTV-844-A1M* ≤ 20 m³ ≤ 350 m³/h
UPF-OTV-844-A2M* ≤ 40 m³ ≤ 700 m³/h
UPF-OTV-844-A3M* ≤ 60 m³ ≤ 1050 m³/h
* with fan

UPF-OTV specifications

  • Coalescence filter
  • Generated underpressure: typically 5-10 mbar, depending on the design also significantly more
  • Oil mist separation: 99 %
  • Residual oil content after filtration: < 20 mg/m³
  • Limit values of TA Luft are undercut
  • Filtration: up to 0.1 μm droplet size
  • ATEX certification: optional
  • Germanischer Lloyd (GL) and RINA / Type approval: optional
  • Maintenance-friendly, filter change intervals up to 24,000 hours; depending on the design also up to 32,000 hours

Oil tank ventilation