Remove the possibility of oily plasticiser residue from rubber hoses contaminating your regulator.
In October 2006, Calor released "Information Bulletin No 1" which gives advice on the problem of blockages sometimes occurring in Truma 30mbar Caravan Type
It suggests that the major cause is re-condensed gas extracting plasticisers from the high pressure rubber hose and depositing a resulting oily substance into the
regulator preventing it from passing gas.
It, therefore, recommends the regulator inlet be mounted 75mm higher than the cylinder valve. But this can be very difficult and, in some cases, impossible
without changing to smaller cylinders which means the gas costs more and obviously will not last as long.
It has also been suggested that switching off the gas at the cylinder when not in use would help - but this is not really practical.
Gaslow solves the problem completely by removing the cause - rubber hose - and replacing it with Flexible Stainless Steel. Now re-condensed gas can no longer
extract any plasticiser.
This just leaves the slim chance of re-condensed gas physically draining back into the regulator as the bulletin suggests that swelling of the valve seats could
occur if re-condensed gas falls under gravity from hose back into the regulator (see Diagram A).
In most cases you will be able to configure your system similar to the installation pictures C,D and E, which prevents this situation occurring.
However, if your regulator is the same height or lower than the cylinder valves and it is difficult to raise the regulator inlet, you can easily prevent re-condensed gas draining back into the regulator by making sure the Stainless Steel hose is long enough to fall lower than the inlet before it connects to the regulator i.e. the hose is rising towards the regulator inlet (see dia. B).