VACUUM LEAK DETECTOR
VLXE ..
31/10/2019
- 20 -
5.3.4 Several pipelines/interstitial spaces connected in series
The liquid stop valves (27*) connected against the direction of flow
prevent the other interstitial spaces being filled with leaked fluid if
there is a leak in the pipeline.
The interstitial space volumes for the connected pipelines must com-
ply with the following conditions:
3
∙
V
IS 1
> V
IS 1
+ V
IS 2
+ V
IS 3
+ V
IS 4
and
3
∙
V
IS 2
> V
IS 2
+ V
IS 3
+ V
IS 4
etc.
V
IS (number)
is the volume of the particular interstitial space. No. 1 is the
interstitial space to which the suction line is connected (see 5.7.6)
5.4 Making pneumatic connections
5.4.1 Fitting the connection to the vessel interstitial space
(1) Generally according to the guidelines of the container manufac-
turer.
(2) SGB offers assembly kits with various connection kits.
5.4.2 Fitting the connection to the pipe interstitial space or test valves
(1) Generally according to the requirements of the manufacturer of
the pipeline / interstitial space.
(2) If Schrader valves are used, the following points must be noted:
- Unscrew
protective
cap
- Tighten lock nut
- Unscrew valve insert and stick up next to the connection with
a piece of adhesive tape. (as proof of the disassembly)
- Screw on connection to the interstitial space or test valve and
tighten by hand.
- Tighten if necessary, with suitable pliers.
5.4.3 Between the leak detector and the interstitial space
(1) Select and lay suitable pipe.
(2) When laying the pipe, check again that the hoses are protected
against damage when entering the manhole shaft.
(3) Make the appropriate connection (as shown in the following pic-
tures).
5.4.3.1 Flange screw connections (for flanged pipes)
(1) Oil O-rings
(2) Insert intermediate ring loosely in the coupling connecting piece
(3) Push union nut and compression ring over the pipe
(4) Tighten the union nut by hand
(5) Tighten union nut until increased force is clearly noticeable
(6) Final assembly: turn further by ¼ turn
Installation