Yoke gate valve with butt-weld ends - S 42 121-4400 PN 400

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. If the valve is
installed horizontally, the actuator must be supported.


The gate valve can be operated by el. servomotor, handwheel or
from a stand. The gate valve cannot be operated without bypass
when max. differential pressure acc. to the table is reached.

Shut-off valve for water, steam, gases and
other non-aggressive liquids used in energy
and chemical equipment for service pressures
and temperatures (depending on valve

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 stem nut is turned to raise or
lower the stem and flexible wedge. Seats and
wedge have hard welded alloy sealing
surfaces. The seats are pressed and welded
into valve body. Stem is sealed with gland
packing in a self-sealing bonnet.

Connecting and end-to-end dimensions
Butt-weld end finish as per ČSN 13 1075.
Basic end-to-end and connecting dimensions
are given in the table.

Body, bonnet, wedge 11 416
Stem stainless steel (13 Cr)
Seat 11 416
Sealing surfaces (weld deposit) stellite 6
Gland packing asbestos-free graphite

The gate valve is tested per ČSN 13 3060,
part 2, leakage grade 2.

Go to
WWW Intersigma Indusrial a.s.