2-directional valves are applied in gas engineering in case of a change in fluid flow direction in the installation.
Basic design comprises passage cage valve DN300, PN100, Kv1350.
The plug design allows for a rangeability of 100:1.
Plug is pressure-balanced by „U” type packing set providing tightness in both directions. Packing used, as well as plug guiding tape provide for minimum friction factor and excellent tribological properties.
Seat hole and outer plug surfaces are stellited, control cage and guiding sleeve are heat-treated and gas-nitrided, and the stem is made of titanium.
The technology of increasing hardness and materials used guarantee long and reliable service.
Please watch a short animation presenting the described construction: