Filling a gas it system

[Canalsman]

I have twin Gaslow system and I was told to always close the cylinder valves before filling.

I googled Gasit, their website is down but the phone number is :- 01286 832443

GasIt no longer exists as a separate entity.

A company called Dragon Products distributes their products.

 

[Canalsman]

I've not seen a reason online for why you should have the valve closed, but I would assume having thunk a bit about it, it might be that there is a much higher pressure coming into the tank/cylinder whilst filling it than the tank itself would normally have, which could overload the gas regulator, this would then possible cause the appliance taps to fail, but then I would think the brains that make the regulators would have put a failsafe in them to prevent that.

But not found any useful info.

The suggestion is that the input pressure provided by the pump is significantly greater than the regulator deals with in service.

It is a precautionary measure to protect the regulator.

I have recent experience filling with LPG in Spain. At one garage the pressure was so high that the cylinders would not fill. I suspect that there is protection built in to protect my GasIt cylinders.

The disconnection of the filling hose was extremely violent, indeed quite frightening!

I went to another nearby garage and filled without any problem...

 

[Pudsey Bear]

The suggestion is that the input pressure provided by the pump is significantly greater than the regulator deals with in service.

Yes, I mentioned this in an earlier post.