Preliminary Remarks - Gce Lab 3100 Gebrauchsanweisung

7. INSTALLATION / OPERATING OF MVR-A3100 REGULATING
VALVE

7.1. PRELIMINARY REMARKS

The MVR-A3100 is a regulating valve with shut-off function. You can use this valve to set small
gas flows exactly. The MVR-A3100 has a G1/4" outlet.
DANGER!
• The system pressure has to be released before installation. Depending on the gas type,
residual gases in the pipes must be let off safely. Danger of fire, explosion or poisoning!
7.2. FITTING THE MVR 3100 REGULATING VALVE
WARNING!
• Check material compatibiliy of regulating unit (EMD + MVA/MVR) and gas. Certain gases
require special materials for the body (brass or stainless steel) and sealing material (eg, FKM,
EPDM...) Do not fit the valve if the result is negative or ambigous.
Tool: open-end wrench SW 22.
See Section 5.3.1 Table 3
Fitting the MVR3100:
Remove the dummy threaded joint on the intended mounting point of the pressure regulator.
Normally, the control valve is fitted on the right (or below). To connect the control valve, insert a
seal into the intended connection on the pressure reducer. Tighten the control valve by hand.
The control valve should now be 90° - 120° in front of the intended limit position. If this is not the
case, you must replace the seal. To increase the angle, use a thicker seal. To reduce the angle,
use a thinner seal.
If the position of the control valve is okay, tighten it up to the limit position using the open-end
wrench. Close up free connections on the pressure reducer using a seal and a G 1/4" screw
plug so that they are gas-tight.
7.3. OPERATING THE MVR 3100 REGULATING VALVE
To open the control valve and to increase flow rate, turn the knob to the left. Up to 10 turns are
possible.
To reduce the flow rate and close the control valve, turn the knob to the right until slight
resistance is felt - this indicates that the minimum flow rate or the closed condition has been
reached.
WARNING!
• Turning too far against resistance could destroy the valve!
MVR-A G MVR-A W
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EN