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Repairs
1
2
3
4
*
5
*
6
7
Fig. 22: Discharge valve (double ball
valve).
Cleaning a suction valve
12.3.2
Single ball valves
42
1.
Slide into the valve body (1) one after another:
one seal (2) and one valve seat (3) - correct!
n
one seal (2) and one valve bushing (4)
n
(If fitted: one spring (*) into the spring guide of the valve seat (3)
n
one ball (5) into the valve body (1)
n
one seal (2) and the second valve seat (3, correct!)
n
one seal (2) and the second valve bushing (4)
n
(If fitted: the second spring (*) into the spring guide of the valve
n
seat (3))
the second ball (5) into the valve body (1)
n
one seal (2), the third valve seat (3) - (correct!) and a further
n
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. 23.
2.
Carefully remove the parts from the valve body (2).
3.
Replace the worn parts.
4.
Clean the remaining parts.
5.
Check all parts.
6.
If available: Place the compression spring inside the valve body (2).
7.
Insert the valve ball (3 and the valve seat (4).
8.
Screw on the valve cap (5).
Pay attention to the flow direction of the discharge and suc‐
tion connectors when fitting the valve.
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