Shower arm diverter valve

[Rmike]

Hi all
I'm trying to add an all metal/brass shower arm diverter valve to have a shower head and handheld. There are many different valves on the market but I couldn't find any that would not restrict the water flow. Here are some pictures (with reviews) I got off of Amazon to show you what I mean.
I would really appreciate your hep in finding the right valve that is not going to restrict the water flow and loose the water pressure on either side
Thank you in advance

 

[Timmy D]

I think you’re gonna struggle to find what you want. I’ve not fitted them before but just looking at the design of them, they are too small to be full bore.

The holes are there to allow the diverter to seal one outlet while allowing the other to flow. If the holes were bigger, the sealing face of the diverter would need to be bigger. You’d then end up with a lot larger unit.

It would be as pretty, but you could make your own out of copper pipe/fittings and valves.