Coax Quadax Series Instrukcja obsługi - Strona 7
Przeglądaj online lub pobierz pdf Instrukcja obsługi dla Jednostka sterująca Coax Quadax Series. Coax Quadax Series 11 stron. Butterfly valves with actuator
Drukuj stronęNon-observance of these instructions can endanger life and limb and may
cause damage to the pipe system.
If in doubt, please contact the manufacturer.
Butterfly valve with short face-to-face dimension
Counter flanges and/or pipe ends have to have a clear span allowing for sufficient
space for the opened valve disc, so that the latter is not damaged when being
swiveled out.
Prior to installation the valve and the downstream pipeline have to be thoroughly
cleaned of any contamination, especially of hard foreign substances.
Butterfly valves with a short face-to-face dimension and actuator safety position OPEN":
For installation
- the opened valve disc has to be closed with control medium,
- then the valve has to be kept in the "CLOSED" position while fully pressurized,
Danger -Life
until it is inserted in the line and securely screwed on,
threatening
- finally slowly reduce the control pressure.
Non-observance of these instructions can endanger life and limb and may
cause damage to the pipe system.
Butterfly valves of the series QUADAX can generally be installed irrespective of the flow
direction. To benefit from the optimum function of the butterfly valves:
it is recommended to install the valve so that an arrow direction marked on the type
plate corresponds to the direction that the pressure exerts on the closed disc. This
direction may well be opposite to the flow direction with opened butterfly valve!
The preferred installation position is the one with horizontal valve shaft. If this is not
possible, the shaft should be installed as much as possible from vertical position. If
possible, the actuator should not be mounted directly below the valve. Stuffing box
leakage could damage the actuator. If possible, the actuator should not be mounted
directly above the valve: Air heated by the pipeline may damage the actuator.
A subsequently mounted actuator must be supported if, as a result of its weight
and/or the mounting position on the mounting kit, a non-scheduled bending load
occurs between the valve and the actuator.
Caution
When inserting the valve (and the flange seals) in an already mounted pipeline the
distance between the pipeline ends has to be dimensioned in such a way that all
connecting surfaces (and seals) remain undamaged.
The gap, however, must not be larger than necessary so that no additional stress is
generated in the pipeline during installation.
Only butterfly valve with flanges:
The counter flanges of the pipeline have to be flush, level and parallel.
Butterfly valves with flange ends:
The sealing surfaces on bodies with flange ends of the butterfly valve are designed in
such a way that flange seals according to EN1514-1 or ANSI B16.21 are to be
Attention
implemented. Counterflanges must have smooth sealing strips, e.g. shape C, D or E
in line with EN 1092 or stock finish as per Ansi B16.5. Other flange shapes are to be
agreed with the manufacturer CO-AX.
Butterfly valves with a short face-to-face dimension must be inserted in the gap
between the pipeline ends with a closed valve disc; otherwise the valve disc may be
damaged and the valve no longer seals.
Attention
Version January 2011
Operating Instructions Quadax Series Butterfly Valves with Actuator
:
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