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 con‐
struction.
3.
Place the larger seal (7) between the insert disc (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 direc‐
tion. The fine machined side must point in the
direction of flow with all valve seats (3).
10.3.2 Plate valves
Do not scratch the finely machined sealing sur‐
faces on the valve plates (5) and valve inserts (6).
1 Compression spring
2 Valve body
3 Valve plate
4 Valve insert
5 Valve body bushing
1.
Screw the valve cap (7) on to the suction side - see Fig. 23.
2.
Carefully remove the parts from the valve body (4).
3.
Replace the worn parts.
4.
Clean the remaining parts.
5.
Check all parts.
Cleaning a suction valve
1
2
3
4
5
P_MA_0040_SW
Fig. 23: Cross-section through the
plate valve
Repairs
65
