The spring 20 on the relevant position
(11), the new v belt 17
into the new seat 2, the spring 20 on the relevant position.
(12) the first
ball valve 3 into 1, is essential to stem the slot 4 with 3 goals.
90o will rotate the valve stem 4 to open. 2 sets of the seat on the ball, then sets of tapered roller
bearing 26 to the stud of 7 on the body 26 into the
valve body 1 and 2, just insert a valve seat 26 in the body.
(13) with (12)
method into the other side of the seat 2 and valve body 26.
(14) Tighten the
nut 8.
(15) operation
of the hoist drive check valve flexibility.
(16) air-
tightness test.
(17) mounted on
the pipeline, according to the requirements of air tightness test pipeline.
Full decomposition of the hex nut, O-ring 21 and thrust washer 31 of the replacement.
(1) Remove the
ball by 2.3 to decompose.
(2) decomposed
by 2.2.
(3) Remove the
valve stem 4, remove the thrust washer 31 and O-ring 21.
(4) Check all
parts, if any damage to be repaired, the butterfly valve parts will be clean.
(5) lubrication
of the sealing surface, coated with a thin layer of grease on the stem.
(6) Install the
new O-ring 21 and thrust washer 31, mounted on the valve stem.
(7) according to
Section 2.2 for assembly.
(8) according to
Section 2.3 for assembly.
(9) operation of
the hoist drive check valve flexibility.
(10) air-
tightness test.
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