My preference would be Gaslow as I have had fantastic use out of ours. 13 years now I think. Plus Gaslow have responded to my emails today and been quite helpful and I think they offer a 5 year warranty whereas Gasit is 1 yr I believe. Im open to either though.
However now I am somewhat confused. My plan was to get 2 x Gaslow or Gasit 6kg and a 6kg Calor backup so I emailed Gaslow with that requirement. It seems they do some fittings which allow you to connect a Calor to the actual filler point outside the van and it equalises with the Gaslow system but as far as I can tell does not fill the cylinders and they warn not to attempt to do this. This is less than ideal as it means having the Calor outsie.
Link here.
https://www.gaslowdirect.com/gaslow-technical-section/ click the
How to use a Reserve Cylinder Connection Hose 01-4500
and the parts needed
The Gaslow Braided Local Cylinder Connection Hose simply screws into the Gaslow filler point and now you can connect any gas cylinder adapter that has a 21.8LH fitting to the Hose. Length 1.5 metres. When using this hose with an external bottle, you are drawing the vapourised contents through...
www.gaslowdirect.com
The Gaslow Easy-Fit Adapter 01-1674 is a UK POL LH male adapter with Easy-Fit hand wheel to convert 21.8LH regulators or regulator hoses to fit UK Propane cylinders.
www.gaslowdirect.com
If any of you are using Calor backups with your gaslow or gasit systems how are you doing it please?
One thing I just realised is the dealer who is selling this van advertises Gaslow systems so I might be able to wangle a deal.