ProMinent
®
Page 30
Repairs
Cleaning the discharge valve (PP, PC, NP) for types 0708, 1008, 0220, 0420, 0413, 0713, 0232
GUIDELINE
• Discharge and suction valves are different! Dismantle one after the other to avoid
confusion!
• Only use new parts, which fit your valve (in shape and chemical resistance)!
• The pump must be reset after replacing a valve.
1
2
3
4
5
6
7
8
9
10
11
12
S Loosen the hose.
S Unscrew the discharge valve from the liquid end and rinse thoroughly.
S Remove the O-ring (12) and the shaped seal (11) from the liquid end with a small
screwdriver.
S Insert an Allen key or similar into the smaller hole of the pressure connector (1) and push out
the valve inserts (2, 6).
S Separate the two valve inserts (2, 6) and let the valve ball (3) drop out.
S Remove the valve seat (10) from the “valve insert” (6) and let the valve ball (7) drop out.
S Remove the washers (4, 8) and the O-rings (5, 9) from the “valve insert” (8) and the valve
cap (10) with a small screwdriver.
S Clean all parts.
S Put one of the washers (4, 8) and one of the O-rings (5, 9) into the “valve insert” (6) and the
valve cap (10) respectively.
S Place the valve balls (3, 7) onto the washers (4, 8) in the “valve insert” and the valve cap (10)
respectively.
S Push the valve cap (10) onto the “valve insert” (6) until it engages.
S Push the valve insert (2) onto the “valve insert” (6) until it engages.
S Insert both valve inserts into the pressure connector (1), (check that the directions of the
arrows on the fluting of the pressure connector (1) and on the valve inserts (2, 6) are the
same!)
S Insert the O-ring (12) and the shaped seal (11) into the liquid end.
Fig. 27 S Screw the valve in as far as it will go.
S Secure the hose.
Cleaning the suction valve (PP, PC, NP) for types 0708, 1008, 0220, 0420, 0413, 0713, 0232
Dismantling, cleaning and reassembling of a suction valve is practically the same as for a
discharge valve. Please ensure, however, that:
• the shaped seal is placed in the suction connector
• only the O-ring is inserted into the liquid end and not the shaped seal
• the flow direction for the suction connector is reversed as for the pressure connector
Fig. 28
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