SPB6 Barrier fluid system
with bladder accumulator

SPB6 Barrier fluid system <br/>with bladder accumulator For a larger view, please mouseover the image.
For a larger view, please mouseover the image.

A From mechanical seal
B To mechanical seal
C Fill
F Drain
H N2 Precharge
Pressurized barrier system (closed circuit) for use in seal systems with high pressures and/or for hazardous/environmentally harmful processes. The SPB6000A4 (Plan 53B) range is available with a pressure accumulator, cooler (finned tube, water or air cooler with fan) and a wide range of instruments.
A refilling unit has to be provided.
  • Pressurization is by means of a pre-loaded bladder accumulator
  • The nitrogen is separated from the barrier medium by membranes in the accumulator: nitrogen cannot get into the barrier medium or process medium
  • Barrier pressure is created without any need for connection to a nitrogen supply
  • Available with finned tube, water or air coolers with fan
  • Modular system: combination with a wide range of system components/instruments possible
  • API 682 / ISO 21049
  • API 682 4th ed. Cat. 2/3 - 3CW-FB
  • API 682 4th ed. Cat. 2/3 - 3CW-BB
  • API 682 4th ed. Cat. 2/3 - 3CW-FF
  • API 682 4th ed. Cat. 1 - 3CW-FB
  • Refining technology
  • Oil and gas industry
  • Petrochemical industry
  • Chemical industry
  • Power plant technology
The SPB6000A4 is designed to perform the following functions of a barrier system:

- To pressurize the buffer chamber
- As leakage compensation
- To cool the seal

Pressurization (> process pressure) prevents the process medium from getting into the barrier circuit or the atmosphere. Pressurization is supplied by a pressure accumulator which is pre-loaded with nitrogen. Circulation in the barrier circuit occurs via the thermosiphon principle or by forced circulation, e.g., with a pumping screw.
Design and production in accordance with EU Pressure Equipment Directive PED 2014/68/EU available.
Design, calculation and production acc. to ASME VIII, Div. 1 available.

3rd party inspection, ASME U-stamp on request.