SPC6 Barrier fluid system
with piston accumulator

SPC6 Barrier fluid system <br/>with piston accumulator For a larger view, please mouseover the image.
For a larger view, please mouseover the image.
SPC6002A4 with air cooler

A From mechanical seal
B To mechanical seal
C Fill
G Vent
H Pressure reference
Pressurized barrier system (closed circuit) for use in seal systems with high pressures and/or for hazardous/environmentally harmful processes.
The SPC6000A4 (API Plan 53C) range is available with a pressure booster, cooler (finned tube, water or air cooler with fan) and a wide range of instruments.
A refilling unit must be provided.
  • Pressurization occurs by means of a pressure booster
  • Automatic setting of the barrier pressure via reference pressure:
    simple and reliable mode of operation
  • Safe operation even in case of pressure changes
  • 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
Pressure ratio depending on stuffing box pressure range:
• 4 bar (58 PSI) … <10 bar (145 PSI)
= piston ratio 1:1.5
• 10 bar (145 PSI) … <22 bar (319 PSI)
= piston ratio 1:1.2
• 22 bar (319 PSI) … 40 bar (580 PSI)
= piston ratio 1:1.1
For stuffing box pressures less than 4 bar (58 PSI) or above 40 bar (580 PSI) consult EagleBurgmann.
  • 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 SPC6000A4 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. 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.