Installation, Operation and Maintenance Manual
Butterfly Valves Type 56, 75, 56D, 75D 17
<< Assembling The Valve >>
Procedure
1) Before starting assembly, silicone grease (equivalent to Toray Silicone
HVG) should be spread on the disc O-rings (A) [4], (B) [5] and stem O-ring
(C) [6].
2) The procedure of the assembly is the almost reverse of its disassembly.
However, to insert seat [3] with the disc [2] into the body [1], set the disc [2]
with half - opened position.
Press outer rim of seat [3] into inside of the body [1], keeping stem holes
straight.
(Make sure that stem holes of the seat [3] are in alignment with the stem holes of the body [1].)
3) After assembly, make sure that the disc [2] fits seat [3] well.
<< Assembling The Handle of Gearbox[450-600mm (18”-24”)] >>
1) Attach the Handle and the shaft aligning the holes correctly.
2) Use a hammer to intrude/push in the spring pin into the hole.
(11) Adjustment procedure for stopper
Protective gloves Allen wrench Spanner wrench
The adjustments for full-opened and full-shut position are step-less, and it can be done with the stopper adjuster.
1) Butterfly Valve Type 56, 56D (Gear Type: Type 3)
Remove the rubber cap of Full-shut (Full-opening) adjuster.
Butterfly Valve Type 75, 75D (Gear Type: AB1250N)
Remove the nut by spanner wrench.
Butterfly Valve Type 56, 56D, 75, 75D
(Top Gear Type: RVA-03-UG, RVA-04-UG)
Loosen the lock nut by spanner wrench.
2) Loosen the adjuster hex-bolt completely by Allen wrench or
spanner wrench.
3) Adjust the disc of valve to required position.
4) Tighten the adjuster hex-bolt.
5) Butterfly Valve Type 56, 56D (Gear Type: Type 3)
Put the rubber cap of Full-shut (Full-opening) adjuster back on
gear box.
Butterfly Valve Type 75, 75D (Gear Type: AB1250N)
Attach the nut to the stopper.
Butterfly Valve Type 56, 56D, 75, 75D
(Top Gear Type: RVA-03-UG, RVA-04-UG)
Tighten the lock nut by spanner wrench.
Necessary items
Rubber Cap
Adjuster for Full Shut Position
Adjuster for Full Open Position
Butterfly Valve Type 56, 56D
Butterfly Valve Type 75, 75D
Open Side Close Side Nut Adjuster
Butterfly Valve Type 56, 56D, 75, 75D
Open Side
Close Side
Adjuster
Lock Nut
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