Diaphragm Vessel Assembly: Cold Water Supply, Before/After Safety Valve Placement

Hello. I have a question because I searched the internet and I'm not entirely sure where to mount the diaphragm dish?
I know that on the supply of cold water to the boiler. Only now, before the safety valve or after the safety valve?

Boiler - vessel - valve. Although I'm not sure if this order really matters. Mainly you need to pay attention that there is no possibility to separate the safety group from the boiler with a ball valve.

in my opinion, if the pressure increases and on the pressure gauge it can be seen that it is elevated, i.e. if the tank is installed behind the check valve and at the same time the safety, the valve will work before and then the tank will be
in my opinion, the tank should be in front of the safety valve and then the pressure will act on the vessel and not on the valve

louolo wrote:

I know that on the supply of cold water to the boiler. Only now, before the safety valve or after the safety valve?

I am asking for a scheme that should dispel any doubts.

Diagram as a colleague earlier submitted - the most correct, that is, from the side of how the water flows: a stop valve, a dizzy valve, a safety valve and a vessel, and only a hot water tank.
I will add only that the expansion vessel and the safety valve should be mounted above the hot water tank, so that it will not be necessary to drain all the warm water from the tank with possible replacement. You can not give a valve (eg a ball) because the regulations prohibit. You can optionally use a special valve / quick-release coupling for easy disassembly / assembly / servicing of vessels, eg: Afriso ASK: