Installation Operation and Maintenance Manual
W
Lever & Gear Type
7) Hold flat surface of Stem [7] with vise and pull off valve body [1].
8) (A) Set the valve body [1] on square lumbers at edges of valve body on the press and put a lumber on the disc [2].
Operate the press slowly and push disc [2] and seat [3] out if the valve body [1].
(B) Set the valve body [1] on square lumbers at edges of valve body and put a circular stick on the disc [2].
Strike the circular stick with a hammer and remove disc [2] and seat [3] out of the valve body [1].
9) Set the disc [2] parallel to the working desk to half opened position. Push the seat [3], and remove the disc [2].
10) < Nominal size 1.5” - 12” (40 mm - 300 mm)
Remove the stabilization ring [156] and the O-ring [6] from the stem [7].
<< Assembly >>
Procedure
1) Put the O-ring [6]
onto the stem [7].
2) Before starting assembly, grease (Silicone) should be spread on the top and bottom disc [2], the stem hole of the
seat [3] and the stem O-ring [6].
3) < Nominal size 1.5” - 12” (40 mm - 300 mm)
Insert the stabilization ring [156] into the upper side slot of the seat [3]. The upper side slot of seat [3] has larger
stem hole than lower side.
Make certain tabs are properly aligned. Both upper and lower stabilization ring [156] are identical.
4)
11)
Insert the stem [7] about 1/3 into the body [1]. Install the seat [3] into the body [1] by aligning upper seat stem hole
with the stem [7].
Collapse the left or right side of seat [3] in towards opposing side exposing lower stem hole by screw driver (–).
< Nominal size 1.5” - 12” (40 mm - 300 mm)
Install the stabilization ring [156]
into the body [1] aligning tabs of ring with center groove of the body [1]. Seat
[3] tabs should line up when bottom of seat is reset into body of valve.
5) Remove the stem [7].
6) Reset the seat [3] into the body [1].
<Nominal size: 1.5” - 12” (40 mm - 300 mm)
Make certain stabilization rings [156] sit flush inside of seat [3] with tabs properly aligned. If stabilization rings [156]
are not installed correctly, the seat [3] will not sit in the body [1] properly. This is indicated by a visible gap between
seat [1] and body [1], and disc [2] will not fit properly.
7) To install disc [2], make certain valve size on disc [2] is in upright direction. Install top of disc [2] into seat [3]
aligning with upper stem hole.
8) Rotate disc [2] to 75% (Approx.) closed position and install stem [7] about 50% into the body [1].
9) Press in bottom of disc [2] to lower stem hole.
Caution
Caution
FYBROC
®
NM WSB SERIES VALVES
INSTALLATION OPERATION AND MAINTENANCE MANUAL
14
Fybroc
®
Wafer Style Butterfly Valves 1.5
”
– 12
”
(40 – 300 mm)