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Altai Machine-Building Company

Select equipment

Designation

Valve type

Dn (diameter)

Pn (pressure)

Т°С (temperature)

Data sheets of pressure-reducing desuperheating station, of stop valves, of regulating valves

7с-6-3

Destignation Dn, mm Pn, MPa Т, С° Kvy, m3/h F, cm2 L, mm H, mm A, mm d1, mm (d1/D1) d2, mm (d2/D2) Pp, MPa Weight, kg
7с-6-3 250 2.5 450 1020 253 330 710 420 250 300 375

body – steel 20ГСЛ (GOST 108.961.03) with building-up welding 04X19H9C2;

cover – steel 20К (GOST 5520);

valve disk – steel 20 (GOST 1050) with building-up welding 04X19H9C2.


Safety and pulse valves are manufactured in accordance with Technical Specification 3742-002-79315310-2007.

Safety valve is operated by pulse valve. These valves represent a pulse-safety device used to prevent from steam overpressure in pipelines of pressure-reducing desuperheating stations, pressure-reducing stations, deaerators and other facilities of the thermal power plant. Connection to pipeline: 7с-6 – by flange, 7с-8 – by welding (or by flange at the customer’s option), pulse valve – by welding.

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