GB.TBXZ342.130915
Registered design. The company reserves the right to make changes without prior notice.
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Presetting
The valve can be preset by means of the appropriate flow
diagram for the relevant valve size. The presetting of the
valve can be read in the "main" and "secondary" scale on
the handle. Double zeros indicate that the valve is closed.
- The primary valve setting (main) is shown in the lower
window, where the values move in a vertical direction.
Each number indicates one whole turn.
- The secondary valve setting (secondary) is shown in the
upper window, where the values move in a horizontal
direction. Each number indicates one tenth of a turn.
To set a valve to a certain pressure drop setting that e.g. is
equivalent to 2.3 turns in the diagram, proceed as follows:
1. Close the valve completely.
2. Open the valve 2.3 turns.
3. The memory stop can be set as follows:
- Remove the plastic cover on the handle using a small
tool:
- Insert the 3 mm Allen key supplied into the hole in the
center. Make sure that the topset® is in its required posi-
tion and tighten the inner screw clockwise until it stops.
Do not tighten it too hard.
- Replace the plastic cover. You can prevent unauthorized
persons from changing the setting by security sealing the
cover of the handle's upper section. This can be done by
using a special wire with a security seal that you insert
through the existing grooves.
The valve can now be closed, and thus influence the flow
at anytime. When the valve is opened again the memory
stop will return to the previous setting.
4. The valve is now set.
To check the presetting, close the valve. The setting indi-
cated should then be 0.0. After that, open it to stop. The
presetting will then be indicated, in this case: 2.3.
Diagrams that indicate the pressure drop at various set-
tings and flows for each size of valve are provided for
guidance in determining the correct valve size and preset-
ting (pressure drop).
A fully open valve corresponds to 4 turns (9505) or 8
turns (9555P). Opening the valve additional turns will not
increase its capacity.
