Reximex Bottle Valve vs FX bottle Valve

I was looking for a Bottle valve for my Reximex Throne 2 and was on BestFittings in the UK. I found these two Bottle valves. I don't see any difference.

Reximex Valve

FX Valve
You can use the valve on the throne with a buddy bottle.

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You can use the valve on the throne with a buddy bottle.

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Yes, i did my usual big bottle upgrade immediately after unboxing. Had ordered one when I bought the gun from Huma Air and then there was a 2 week delay in shipping the gun. So it was here when the gun finally arrived.

I was looking for a 2nd one and noticed the FX appears to be the same valve. But it looks like the FX is 300bar and the Reximex is 250bar. So probably not interchangeable.
 
Yes, i did my usual big bottle upgrade immediately after unboxing. Had ordered one when I bought the gun from Huma Air and then there was a 2 week delay in shipping the gun. So it was here when the gun finally arrived.

I was looking for a 2nd one and noticed the FX appears to be the same valve. But it looks like the FX is 300bar and the Reximex is 250bar. So probably not interchangeable.
Gotcha, when I was in the process of swapping bottles at palmy Jerry guns, we tried running a buddy valve and that, and for some reason, it didn't work. I can't remember if the inside valve park was too shallow or too deep. I would ask thammer if he has any spare valves, or check with https://spares.bagnallandkirkwood.co.uk/product-categories/