Single Ball Valves - ProMinent Makro/ 5 Operating Instructions Manual

1
2
3
4
*
5
*
6
7
Fig. 20: Discharge valve (double ball
valve).
Cleaning a suction valve
12.2.2

Single ball valves

When assembling, take note of the orientation of the
valve seats (3). The valve seats (3) are used as a ball
seat on the fine machined side and as a ball cage and
spring guide on the other side. The fine machined side
must point in the flow direction with all valve seats.
When assembling the valves, take note of the
sequence:
Teflon – Metal – Teflon – Metal - ...
1. Slide into the valve body (1) one after another:
one seal (2) and one valve seat (3) - correct!
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one seal (2) and one valve bushing (4)
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(If fitted: one spring (*) into the spring guide of the valve
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seat (3)
one ball (5) into the valve body (1)
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one seal (2) and the second valve seat (3, correct!)
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one seal (2) and the second valve bushing (4)
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(If fitted: the second spring (*) into the spring guide of the
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valve seat (3))
the second ball (5) into the valve body (1)
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one seal (2), the third valve seat (3) - (correct!) and a fur‐
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ther seal (2)
2. Position the insert disc (6) with the flare on the packing.
The distance between the edge of the valve body
and the insert disk (6) is due to the construction.
3. Place the larger seal (7) between the insert disk (6) and the
dosing head.
4. Screw in the valve until the stop.
A suction valve is dismantled, cleaned and assembled in the same
way as a discharge valve.
Please note, however, that when assembling, the
valve seat (3) must be aligned in the other direction.
The fine machined side must point in the flow direction
with all valve seats (3).
1. Screw the valve cap (5) on to the suction side - see Fig. 21.
2. Carefully remove the parts from the valve body (2).
3. Replace the worn parts.
4. Clean the remaining parts.
5. Check all parts.
Repairs
41