You need a comeback with a better description of exactly what you need, like physical dimensions, mode of operating and conditions, material of construction, environment.
I notice that the Bandlock product linked above is ranges to 100" and up to 2500 psi but my gut tells me that you may not be able to get both at the same time and I'd be (pleasantly) surprised if you could get a 48" version in 2500 psi. It is a nice looking door but I can't picture it being good for 5000 psi in any meaningful size.