Cast Steel High Pressure/Temperature Wedge Gate Valves ГОСТ Р 53672-2009

Applied as a closure device for power plant (thermal power plants, central heating power plants, hydroelectrical power plants) equipment and pipelines that transport water and steam.

Valve control is maintained by the following types of actuators: electric actuator of different manufacturers (Э), handwheel (М), spur gear drive (ЦЗ) or bevel gear drive (КЗ).

Valves can be designed with three types of closure element: bayonet-type connection between discs and a ring (рис. 1), spherical lentil-type (Fig. 2) and mushroom-type (Fig. 3 and Fig. 4) axial hinges . Bonnets of valves with spherical lentil-type and mushroom-type axial hinges can be performed with reducing elements which fix the discs in open closure member position that results in substantial disc vibration decrease.

Gate valves in Fig. 1, 2, 3 are the gate valves with body-bonnet self-sealing coupling; gate valve in Fig.4 – body-bonnet flanged connection.

Sealing surface – corrosion resistant steel facing.

Shutoff class – “С” according to GOST Р 54808-2011.

End connections – butt welded.

Medium flow direction – all.

Installation position of gate valves on the horizontal pipeline – actuator upward. For convenient maintenance gate valve installation is acceptable on the horizontal pipeline in any position of the upper semicircle, on the vertical pipeline – considering installation requirements of electric actuator according to its maintenance documentation.

Climatic version – U3 (moderate macroclimate, outside and inside operation) according to GOST 15150.

Technical specification and main dimensions

Table 1