Eric,
Well .. we will just have to dis-agree on that one. All "disc" brake
systems must have a check valve of some type and usually this is a
function of the master cylinder. Inline valves can be purchased to
permit use of open master cylinders for conversions or hybrid systems
on cars, (they are available with several different pressure ratings
.. usually from 1 to 10 lbs and are sometimes referred to as "residual
pressure valves").

>From Wildwood Engineering who actually sells these things for
conversions ...
"Residual pressure valves maintain a nominal amount of pressure in the
brake system to alleviate fluid from draining back towards the master
cylinder and causing excessive pedal travel."
campbell

----- Original Message -----
From: "Eric Harnish" <[EMAIL PROTECTED]>
Subject: Re: check valve


> No check valve in a brake system . Pistons move away by elasticity
of
> the piston seals and this is a set design limit . If
> snip <

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