On Sunday, November 12, 2017 at 2:44:06 PM UTC-5, Iggy wrote:
replying to Oumati Asami, Iggy wrote:
The Engineer's right in his description , but wrong with your device.

No, he's not right in his description. What the poster said was that
the "engineer" said that it works by maintaining a constant, fixed,
reduction amount in output pressure versus input pressure. No matter
if you call it a regulator or a pressure reducing valve, I've never
seen one work that way. They all work by maintaining a constant,
set output pressure that's adjustable.

A reducer that just takes a fixed X PSI off the incoming pressure and
then varies the output up and down as the unregulated side varies
would be pretty worthless. He can verify what he has, just get the
make and go to the manufacturer's website.