Project Description


Item No. Description
1 Level switch
2 Manometer
3 Manifold
4 Pressure switch
5 Shut-off valve
6 Orifice
  • For optimum and simple cleaning of the
    vessel interior, a design variant is
    available which can be dismantled
  • Modular design combination available
    with a wide variety of system
    components and instruments selection
    possible, such as level switch,
    circulation pump, hand refill pump,
    thermometer, base frame etc.
  • Construction of the BFS 6000 is
    designed for demanding operating
    conditions up to 50 bar / 200°C
  • Optimum visual is achieved for level
    monitoring through a robust design with
    weld-pad type sight glass
  • The BFS system performs all the basic functions of a buffer/barrier system for the operation of double seals:
  • To pressurize the buffer chamber
  • Leakage compensation
  • Buffer/barrier fluid is circulated by thermosiphon effect
  • Or forced circulation system
  • To cool the seal
  • To selectively absorb product leakage and prevent dry
  • Running (tandem arrangement)
  • Use compressed air or nitrogen for pressurization; pressurization is monitored by a pressure switch.
    The incorporated level switch issues a signal whenever the level of buffer/barrier fluid is too low.
  • Operating and installation diagram for a BFS6000 system
    The BFS vessel must always be installed higher than the mechanical seal. The buffer/barrier fluid flows via the return pipe into the vessel and is cooled. The exchange of fluid takes place by the thermosiphon principle or by forced circulation, e.g. with a pumping screw. Connection pipes to the seal should be designed with as little resistance as possible.
  • Refining technology
  • Oil and gas industry
  • Chemical industry
  • Petrochemical industry
  • PED 2014/68/EU
  • ASME VIII, Div. 1
  • Circulation in accordance with API 682 / ISO
    21049: Plan 52, Plan 53A
  • The BFS6000 range of vessels range conforms
    to API 682 guidelines. The vessels are
    equipped with all essential connections for
    fitting additional components. The BFS 6000
    system is available in standard sizes with flat
    ends, sight-glasses for level monitoring and
    with or without cooling coil. BFS 6000 system is
    equipped as a standard with all the necessary
    system connections and brackets.