WIKA LGG serie Betriebsanleitung Seite 15

5. Commissioning, operation
Size Material
M16 1.7709
A2-70
M20 8.8
A2-70
Note:
All screws must be lubricated (with anti-seize
paste) before assembly. The tightening torques
apply to lubricated screws.
At > 40 bar it is recommended to use 3
Belleville springs per screw. The Belleville
springs are placed in force addition "(((" under
the rotating nut or screw head.
5.3 Mounting of model LGG-G
If there is sufficient mounting space above the glass level gauge, the
glass tube mounting can be made from above. Otherwise, the glass tube
mounting must be made between the valve heads.
Glass tube mounting from above
Mount the valve heads to the vessel, aligned axially
■
Remove the upper plug screw
■
Guide the glass tube from above through the valve head and packing
■
elements and seat it on the block of the lower valve head
Insert the packings in the upper and lower receptacles and tighten
■
union nuts to approx. 5 Nm.
Fit the upper plug screw with a new seal and tighten to 80 ... 100 Nm.
■
Operating instructions glass level gauge, model LGG
Max. allowed operating pressure
up to 100 bar
90
80
-
-
> 100 bar
140
-
170
120
14 13
10 9
6 3
2 1
4 5
8 7
12 11
15
EN