Flowserve PA46 - Manual (Page 15)

5
PA 46, PA 47, MPA 46, MPA 47
Installation
The intermittent valve for removing boiler sludge can be installed in horizontal or vertical pipes.
The hand lever of the PA 46, PA 47 and the hand lever for the emergency operation of MPA 46, MPA 47
must be freely movable.
Flanged design
. 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. Clean seating surfaces of both flange faces.
6. Install intermittent valve for removing boiler sludge.
Socketweld design
. 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. Clean socketweld ends.
6. Arc weld trap only manually (welding processes  and 4 in accordance with ISO 4063).
Risk of death, severe injuries, physical damage or destruction caused by explosive
mixtures!
If the equipment is electrically insulated and installed between pipe flanges, electrostatic
charges may build up.
When using the equipment in explosionrisk areas make sure that static electricity will
be discharged (earthing).
Danger
Attention
■
To avoid waterhammer lay the pipe downstream of the intermittent valve in such a way
that it has a slight fall, or evacuate the pipe before carrying out the boiler blowdown.
■
The length of the pipe between the steam boiler and the intermittent valve for removing
boiler sludge must not exceed two metres!