ASAHI AV VALVES Installation Operation and Maintenance Manual
Butterfly Valves Type57L-IS (Lug style) 9
Procedure
1) Install the valve between flanges and open the valve slightly.
- Tubing with the piping of upstream -
2) Lug-Insert [1e] is inserted in the body [1].
3) Ensure that the direction of fluid and the flow direction marked on the valve body are the same [1].
4) Insert bolts, set nuts and washer and tighten the bolts and nuts temporarily by hand.
5) Tighten the bolts and nuts gradually with torque wrench to the specified torque in a diagonal manner.
- Be certain when installing the valve that the directional arrow
on the valve body and the direction of fluid flow are the same.
Failure to do so will result in a very dangerous condition.
- Tubing with the piping of downstream -
6) The flange on the downstream side is set.
7) Insert bolts, set nuts and washer and tighten the bolts and nuts temporarily by hand.
8) Tighten the bolts and nuts gradually with torque wrench to the specified torque in a diagonal manner.
Arrow
Lug part
󲗹󲘢󲘔󲗚󲘖󲘛󲘠󲘒󲘟󲘡 [󲗞󲘒]
󲗯󲘜󲘑󲘦 [󲗞]
Flange Bolt, Washer
Before After
Flange
Bolt, Washer
Before After
Caution
Sea
t
Dis
k
Bod
y
Terms of Use | Privacy Policy | DMCA Policy
2006-2021 Rsmanuals.com