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Contents are subject to change without notice.
SKW/ SKF-2015-09-ENG
2
INTRODUCTION
2.1
Applications and purpose of use
Flowrox Slurry Knife Gate valves (SKW) and (SKF) are intended for industry medium and slurry
applications. They are bi-directional and are installed between flat flanges to shut-off or
open flow within instructed temperature and pressure limits.
2.1.1
Restrictions on use for SKW and SKF valves
The valve must not be used to throttle the flow in any way, nor should the gate be left in
partially opened or closed position as this will lead to premature failure.
The valve temperature and pressure range must not be exceeded. The temperature ranges
are given in Table 2 for standard sleeve materials. Check the pressure class from the valve
type plate. Do not use higher pipeline pressure than rated for the valve.
Table 2. Temperature ranges for SKW and SKF valves.
Ring sleeve material
NR
NBR
EPDM
Max valve operating
temperature (
°
C)
-40 to +75
-30 to +100
-40 to +120
2.1.2
Using the valve in explosive conditions
This valve type is not designed for Ex-areas.
For use in explosive conditions the valve must have the required Ex-classification and the
grounding cables must be connected to earth. Check actuator, solenoid valve, and limit
switch documentation for more information of use in explosive conditions.
