Item Description
1 Buffer/barrier fluid IN (G1/2“)
2 Buffer/barrier fluid OUT (G1/2“)
3 Cooling water IN (G1/2“)
4 Cooling water OUT (G1/2“)
5 Filling connection with plug (G1/2“)
6 Pressure gas connection (G1/2“)
7 Connection for level switch or level indicator (G2“)
8 Connection for refill unit (G1/8“)
9 Universal connection (G1/2“ for safety valve, flare, etc.)
10 Bracket for refill unit
11 Sight-glass



With the gap-free executed EagleBurgmann TS5000 thermosiphon system it is possible to supply buffer/barrier fluid to double and tandem mechanical seals for a broad range of applications. This range is designed as a flanged version with a sight-glass for level monitoring and with cooling coil. TS vessels are equipped as standard with all the necessary system connections and brackets.

Circulation based on API 682 / ISO 21049: Plan 52, Plan 53A


  • Vessel can be dismantled: for optimum and simple cleaning of the vessel interior
  • Suitable for a wide range of operating conditions: TS5000 up to 30 bar / 200 °C
  • Sockets with recessed gasket: no contamination of the circuit by thread sealant
  • Vessel made of 1.4571 stainless steel / borosilicate sight-glasses: suitable for universal applications

Standards and approvals

  • PED 2014/68/EU (Design and production in accordance with EU Pressure Equipment Directive)

Functional description

The TS 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.


The modular system allows the TS5000 vessels to be combined with a wide range of system components such as, e.g. level switch, circulation pump, hand refill pump, thermometer, base frame, etc.

Product variants

Designation TS5000
Design code PED 2014/68/EU
Integrated cooling coil
Volume, vessel (liters) 10
Volume, tube (liters) 0.5
Allowable pressure1) 30 bar (435 PSI)
Allowable temperature1) -60 °C ... +200 °C
(-76 °F ... +392 °F)
Working volume, MAX-MIN (liters) 1.8
Cooling capacity –
without cooling water (kW)2)
Cooling capacity –
natural circulation (kW)2)
Cooling capacity –
forced circulation (kW)2)
Metal parts 1.4571
Sight-glass Reflex Borosilicate

Other versions on request.

1) Design data, permissible working values depend on the actual conditions of service.
2) The cooling performance depends on the available fluids, their temperatures and flow rates. Please contact EagleBurgmann for professionally selecting the correct heat exchanger.

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