General Pump MK Repair Manual - Manual (Page 28)

GENERAL PUMP
A member of the Interpump Group
MK SERIES
Page 28
Proceed with the insertion of the valve units (suction and delivery) into the head, paying
attention to the correct insertion sequence of the O-rings and anti-extrusion rings.
The correct assembly sequence of the valve units in the head is the following:
Insert the anti-extrusion ring, exploded view item 4 from Owner’s Manual (1, fig. 92).
Insert the O-ring, exploded view item 5 from Owner’s Manual (1, fig. 93).