Adler SpA
Valvole a sfera –- V.le Borletti , 14 - 20010 S. Stefano Ticino (MI) - ITALY
Tel.
+39 - 0297484211 –
Fax
. +39 - 0297271698
- Web Site
: www.adlerspa.com -
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Full bore three ways ball valves
Full bore three ways ball valves
90° type ADLER “FV4”
120° type ADLER “FU4”, “FU6”
a)
Remove the stop pin (Ref. 13) and turn the lever (Ref. 15) up to rotate the ball (Ref. 6) on position 2/3;
b)
For ball valves FV4 remove at first the ends (Ref. 17) unscrewing stud-bolts & screws (Ref. 19 - 20) and then the inserts (Ref.2) for ball valves FU4
unscrew inserts 1/ 2/ 3 (Ref. 2) ;
c)
Remove ball (Ref. 6) from way 1 replacing it if the external surface results damaged.
d)
Unscrew and remove the first nut on the stem (Ref. 14), the wrench (Ref. 15), the second nut (Ref. 14), spring washers (Ref. 12) and the pressing
bush (Ref. 11);
e)
Remove the stem (Ref. 8), with the ‘V’ seal (Ref. 10) and the stem seal (Ref. 9).
f)
Replace seats (Ref. 5) of inserts (Ref. 2);
g)
Replace seals (Ref. 4) and O-Rings (Ref. 3) of the body (Ref. 1) before reassemble inserts (Ref. 2) of ways 1/ 2/ 3.
h)
Reassemble at first screwing inserts (Ref. 2) of ways 2-3 without reaching the mechanical ledge (Ref. 1);
i)
Reassemble the ball valve replacing the stem (Ref. 8) if damaged with the bush (Ref. 9);
j)
Reassemble the ball (Ref. 6) into the body (Ref. 1) keeping down side male connection of the stem in axis with way 1 then screw the insert (Ref. 2) of
the way 1 up to mechanical ledge;
k)
Turn the ball (Ref.6) up on position 1-3 and screw the insert (Ref. 2) of way 2 up to the mechanical ledge. Then turn the ball (Ref. 6) up on position
1-2 and screw the insert (Ref. 2) of way 3. Rotate the ball for 2-3 times in order to be sure of ball center;
l)
Reassemble the ‘V’ seal (Ref. 10) on the stem (Ref. 8), replacing it if damaged;
m)
Reassemble the pressing bush (Ref. 11), spring washers (Ref. 12), the nut (Ref. 14), the lever (Ref. 15) , the top-nut (Ref.14) and the pin stop (Ref.13);
n)
For ball valves FV4 reassemble the ends (Ref. 17) using screws or bolts with nuts (Ref. 19 – 20) and gaskets (Part. 18)- Replace these if damaged;
o)
Operate the valve 3-4 times in order to check that the rotation is free from defects (appropriate torque and uniformity of the ball rotation).
