Thetys Pumps SRL
Tel: +40 744 595 445
Str. Teheran, nr. 11, sector 1,
011931 Bucuresti, Romania

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Thermosiphon SP8 seal pot system – Thetys Pumps
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Thermosiphon SP8 seal pot system

Thetys Pumps / Thermosiphon SP8 seal pot system

Thermosiphon SP8 seal pot system


Remarkable savings in sealing liquid costs

Sulzer Thermosiphon SP8 seal pot system is designed for double mechanical seals with pumping feature. The highest reliability as well as minimized operating and maintenance costs can be achieved with a combination of Sulzer mechanical seal and Thermosiphon SP8.
Main benefits
  • Makes a closed sealing liquid circulation loop with the double mechanical seal
  1. keeps seal lubricated and cooled
  2. prevents dry run
  3. extends the lifetime of the seal
  • Brings substantial savings in sealing liquid consumption compared to an external seal flush plan
  • Wide variety of optional features to fulfill seal flushing system requirements
  • Easy to install and order
Main applications
  • Water
  • Glycol-water mixture


Product information

Designed for pressurized and unpressurized double seal arrangements (similar to API 52 and 53 plans, ANSI 7352 and 7353 plans).

Basic scope

  • Reservoir with a volume of 8 liters / 2 USg in AISI304 stainless steel
  • Support foot / base
  • Level indicator
  • Pressure and temperature gauges
  • Hand and relief valves
  • Hoses with fittings

Optional features

  • ATEX approval
  • Finned air cooling
  • Hand pump
  • Pressure accumulator
  • Level switches (top and bottom)
  • Pressure switch
  • Breather
  • Leakage indicator
  • Pressure transmitter
  • Pressure reducing valve
  • Multiple connections and fittings
  • Winter package (-40°C / -40°F)
  • Hard pipes possibility
Main design features
  • The Alarm WM-Stop version has an integral Schuko 230 V earthed DIN socket into which an appliance (e.g. washing machine) can be plugged.
  • Available with a float switch (KS), ‘broken finger’ switch (NSM05) or a humidity sensor (Humidistat).
Key characteristics
Sealing liquid temperature from -20 up to 70°C / -4 up to 158°F
Pressure max. 10 bar / 145 psi
Material AISI304 stainless steel

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