Desleration sensative valve

[baz-r]

here is how it works

its fitted angled with the input to the top/front angled to the front of the car

when you step on the brakes hard there is a little spool valve that travels uphill by enertia preventing the rear brake lines form increaseing fluid pressure
stoping the rear wheels from locking as the back goes light

so the harder you push the pedel the rear gets no pressure rise
the steeper you set the angle the harder it is for the valve to work

when your stoped and level the back should get full pressure

hope that helps