Flowserve PA46 - Manual (Page 16)

6
Heat treatment of welds
A subsequent heat treatment of the welds is not required.
. Observe position of installation. The hand lever 1 or the hand lever for emergency operation 2
(MPA...) must be freely movable.
. Observe the direction of flow. The arrow indicating the flow direction is specified on the name
plate E.
3. Consider space required for opening the valve. When the intermittent valve for removing boiler
sludge is installed a minimum space of at least 150 mm is required for removing or retrofitting
the actuator!
4. Remove plastic plugs. They are only used as transit protection.
5. Arcweld trap only manually (welding processes  and 4 in accordance with ISO 4063)
or use gas welding process (welding process 3 in accordance with ISO 4063).
Attention
■
Only qualified welders certified e. g. according to DIN EN 87 may weld the valve into
pressurized lines.
Buttweld design
Installation
 continued 
. Release retaining piece for hand lever 3 and pull it out of the forkhead T.
. Apply lubricant (e. g. WINIX 5000) to the retaining piece, forkhead and hole for attaching the
hand lever.
3. Push hand lever 1 through mounting bracket B into the forkhead T and fix it in place by
means of the retaining piece 3.
Mounting hand lever PA 46, PA 47
The flanged connections of the PA 46, PA 47, MPA 46, MPA 47 must be permanently bolted and
leakproof.
After starting up the steam boiler or pressure vessel, the intermittent valve for removing boiler sludge
should be completely opened and closed once. The valve must close automatically, ensuring tight
shutoff.
The stuffing box must be leakproof! Inspect the check hole
C in order to detect any fluid leakage.
If the equipment is mounted in a new and unpurged installation increase the blowdown frequency
a little at the beginning.
PA 46, PA 47, MPA 46, MPA 47
Commissioning
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