Yoke gate valve - S 27 112(3)-525 PN 25



Application
Shut-off valve for water, steam, gases, non-
aggressive liquids, crude oil and its products
for service pressures and temperatures:


Technical description
Cast steel gate valve with flexible wedge and
stem thread inside the body. Sealing surfaces
are welded on body and wedge. Stem is rotary,
non- rising. Gate valve is operated by
handwheel by means of spur gear drive.
Gate valve is provided with foots for
placement on foundation.

Connecting and face-to-face dimensions
Flange connection dimensions as per
ÈSN 13 1060 and ÈSN 13 1061.
Basic face-to-face and connecting dimensions
are shown in the table.

Material
Body, bonnet, wedge carbon steel (42 2643.1)
Stem stainless steel (13 Cr)
Stem nut alloys of heavy
non-ferrous metals
Sealing surfaces weld deposit 13 Cr
Gland packing asbestos-free

Testing
The gate valve is tested per ÈSN 13 3060,
part 2.

Installation
The gate valve can be installed in horizontal
or vertical piping. For electrically actuated
valves, the axis of electric motor must remain
horizontal. If the servomotor is installed with
vertical axis upwards, amount of oil fill must
be increased.

Operation
The gate valve can be operated by handwheel,
chainwheel, electric servomotor or from a
stand.

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