General Pump VF Repair Manual - Manual (Page 11)

GENERAL PUMP
A member of the Interpump Group
VF SERIES
Page 11
If the valve seats are blocked on the head due to the formation of limestone or oxide,
they must be freed by inserting the appropriate tool (p/n 27508000 “VF12-“VF14) in the suction
hole and operating as in fig. 20.)
E) Extract the valve seat, #1, as shown in fig. 21; check components for wear and replace them
if necessary.
At every valve inspection, always replace all the sealing rings and the O-rings between
the liner and the head, between the head and the liner manifold in the area of the recirculation
hole. Before reassembly, clean and dry off the components and all their seats inside the head.