Aleksin Plant of Heavy Industrial Valves - Tyazhpromarmatura
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Special-purpose valves for Nuclear and Thermal Power Stations

In 2009 the plant commissioned a new shop for manufacture of valves to be used in nuclear and thermal power stations. In NPP-91, NPP-92,
NPP-2006 projects, the VVER-type (water-moderated water-cooled power reactor) units operate with:

  • valves to be welded, Pp 1.1–4.0 MPa DN 100–800 mm;
  • valves to be welded, Pp 5.5–24.5 MPa DN 80–800 mm;
  • check valves to be welded, Pp 5.5–20.0 MPa DN 100–600 mm.

To modernize and extend service life of RBMK-type (high-power channel-type reactor) units, the following equipment is manufactured:

  • gates valves to be welded, Pp 11.0 MPa DN 100–800 mm.

Design features and advantages:

  • full compliance with NP-068-05 General Technical Requirements;
  • extended service life;
  • extended time between overhauls;
  • possibility to undertake scheduled valve maintenance according to current condition;
  • compatible with diagnostic systems available in nuclear power stations;
  • possibility to be completed with up-to-date diagnostic facilities;
  • manufacture of "full pressure difference" valve versions of any standard size.

Catalogue of Special-purpose valves for Nuclear and Thermal Power Stations

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