Caution!
Danger of injury due to spring force
You can injure your fingers.
► Pre-tension the actuator with an emergency manual actuator (H)
(material no. 221.310.74) before screwing in the valve disk.
Fig.33
Lock the spacer nut (10) against the actuator rod (A1).
10.8.2 Torques for the Clamps and Clamp Connections
Tighten the clamp connections and clamps on the valve to the torques specified
in the table.
Tightening torques required
Torques
[Nm]
[lbft]
Clamps on the control top
1
0.7
Clamp connection cast half
rings
M6
9
6.6
Clamp connection cast half
rings
M8
22
16.2
Cast clamps
M10
45
33
Lower valve disk (17) of valve
X
DN 25- 50.1" - 2"
24
17.7
DN 65-100, 2 ½"- 4"
58
42.8
DN125+150.6"
70
51.6
10.8.3 Check stroke
Set valve stroke- control top T.VIS
Carry out the following steps:
Maintenance
Installation
430BAL008430EN_4
08.03.2022
59
Summary of Contents for VARIVENT W
Page 87: ...Appendix 430BAL008430EN_4 08 03 2022 87 ...
Page 88: ......