Thermometer Exchange; Non-Return Valve - meibes BigFixLock Documentation Technique Mise En Service

7. Pump groups DN25 / DN32 / DN32+

7.7 Thermometer exchange

7.8 Non-return valve

The non-return valves (SB) and / or return flow inhibitors (RV) data used in our system are specially marked. They are integrated into the
ball cocks and on the rotary handle with marked with a band: The non-return valve can be opened manually by moving the rotary handle
approximately 45 ° to the „stop position".
Note: It is not possible to manually open the backfl ow preventer with the DN32+ variant.
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The thermometers are only just plugged in and can be easily
exchanged by pulling them out. It should be noted that a removed
thermometer should replaced by an identical model. Please pay
attention to the colour marking. (Red text = VL; blue text = RL)