FAQ

Why is the nozzle cannot be closed and trace of oil leak occurs after it is closed?

Possible fault sources

 

a.       Foreign substances exist between the main valve and valve seat

 

b.       Auxiliary valve spring fails to fulfill the sealing action

 

 

Recommended solutions

 

a.       Clean the main valve, elongate the auxiliary valve spring or replace the auxiliary valve spring

 

b.       Clean the main valve, elongate the auxiliary valve spring or replace the auxiliary valve spring