Water Heater Isolator Switch

Hi,
Anyone know where I can get a replacement red isolator switch for my 2017 Broadway,  I only need the red cover not the valve as the plastic has split.
Can you isolate the lpg before these valves to replace the three with new as obviously if you disc the main feed lpg will leak through?

This is one of the gas isolation taps on the gas manifold - correct? I would be very tempted to use epoxy glue to try to repair the existing tap, or possibly even try to fabricate something from a piece of wood, because I suspect that nobody will stock just the tap moulding alone. So it will be quite an expensive repair for a relatively trivial broken plastic part.

But, having said that, if anyone can find you one, PaulMold probably can!

The isolation valve at the LPG tank should do a good job of cutting off the supply to that manifold - not a lot of point in it being there if it doesn't!

Many thnx for your help I've found the location in the Autosleeper handbook page 7-8 am gonna replace the three taps as the van is a 2016 and I'd sooner be safe £40 for new ones with olives and nuts.

I've no idea if the knobs can be obtained separately or how they are fastened. Replacing the whole manifold shouldn't be a difficult job , but if doing it yourself you should get it checked by engineer.

Have replaced the isolation taps all good now. Fudge manage to temp fix the  plastic cover but wasn't really safe so have replaced for safety