Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
5
Storage
Store ERU Knife Gate Valves K1 in their closed position. Rubber-coated
components, as e.g. the sealing element between the body parts, have to be
protected against direct solar radiation. Avoid the effects of radiant heat, e.g. from
heaters.
6
Installation into the Pipeline
Remove all packing material from the valve. Prior to installation, check the pipeline for
impurities and foreign bodies and clean it if necessary.
+
There must be free access all around the valve for operation and
maintenance.
In case of flow media containing solid matters as e.g. sand etc. and installation into
horizontal pipelines the stem or the piston rod should not be installed with an
inclination of more than 30º towards the horizontal. Thus, free flushing of the travel
range of the gate is possible.
In case of deviating installation positions, especially with suspended stem or piston
rod, deposits around the gate have to be expected. This could lead to mal-functions
which increase maintenance work.
During installation of the valve, the distance between the pipe flanges should exceed
the valve face-to-face dimension by at least 20 mm. Thus, the raised faces will not be
damaged and the gaskets can be inserted. Steel-reinforced rubber seals to DIN 2690
are recommended for use as flange gaskets, for slip-on flanges they are absolutely
necessary (consider resistance to flow medium and temperature).
The mating pipe flanges must be plain-parallel and concentric.
Tighten the connecting bolts evenly (without distortion) and crosswise. The pipeline
mustn't by any means be pulled up to the valve.
If the distance between the flanges is too large for the valve, use thicker gaskets to
cover the difference.
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen
x
D-89502 Heidenheim
x
Postfach 1280
(07321) 320-0
(07321) 320 491 e-mail:info
@
erhard.de
Internet: http://www.erhard.de
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