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Application
Shut-off valve for one-way flow of water
mixes with large particles (water + slag, water
+ ash) for service pressures and temperatures:
The gate valve is not suitable for flow regulation.
Technical description
The yoke gate valve has a rising non-rotating
stem with its thread outside the valve
chamber. The wedge seals on one side only.
The other side of the wedge is beveled. Stem
nut is seated on axial ball bearing. Flooding is
done by liquid flowing through lantern ring
situated in stuffing box area.
Connecting and face-to-face dimensions
Flange connection dimensions as per
ÈSN 131060 and ÈSN 131061. Face-to-face
dimensions as per ÈSN EN 558. Basic
face-to- face and connecting dimensions are
shown in the table.
Material
Body low-alloy steel ÈSN 42 2714.9
Bonnet, wedge, yoke carbon steel 42 2643.1
Stem stainless steel 17 027.6
Testing
The gate valve is tested per ÈSN 13 3060,
part 2.
Installation
The gate valves are installed in horizontal
piping with service media flow in direction of
an arrow marked on valve body.
Operation
The gate valve can is operated by electric
servomotor, handwheel or from a stand.
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