OPC (30 – 200 lit.)

OPC Open Expansion Vessels are engineered for installation in open central heating systems. They are made of welded steel construction and painted in a basic colour. Ready to be installed on to vertical surface (wall or carrier), in a horizontal or vertical position. Standard specification does not include insulation.


  • Open expansion vessels with volumes of 30, 50, 100 or 200 litres.
  • Construction material: steel HRN EN S235JRG2.
  • Maximum working pressure – allocated at the highest point of an open central heating system on normal environment pressure.
  • Connection elements for installation already provided.
  • Standard specification does not include insulation.
  • Manufactured in accordance with ISO 9001/2008.

Centrometal d.o.o. shall not be responsible for possible incorrect data caused by error made in transcription and all figures and diagrams are for explanatory purposes only and relevant adjustment have to be made at the spot. In any case, it reserves the right to modify its products as deemed to be required and useful without any prior notification.