INSTALLATION
Series 642
18/73
Edition 2013-08-22
603685EA
4.3
Tightening torque
4.3.1
Mounting of CF-F flanges
Tightening torques for CF-F flange connections depends on the type of seal which is used. Follow
recommendations of seal manufacturer.
4.4
Admissible forces
NOTICE
Force at flange and valve body
Forces from evacuating the system, from the weight of other components, and from
baking can lead to deformation and malfunctioning of the valve.
Do not higher force the valve body as specified.
The following forces are admissible.
Axial tensile or
compressive force «F
A
»
Bending moment «M»
F
A
N
lb.
Nm
lbf.
2940
660
147
108
For a combination of both forces (F
A
and M) the values are invalid.
Verify that the depth of the mounting screws is min. 1 × thread diameter.
Please contact VAT for more information.
