Diagram of the Bottom-sprung Périnet Valve (darker areas indicate ports at the back of the piston)
a = valve casing
b = piston
c = valve loop with slide
d = main tubing
e = port
f = touch piece, finger tip, lever
g = valve stem
h = top valve cap
k = lower valve cap
l = return spring
n = key
o = keyway for piston valve guide in casing
See also photograph of Périnet Valves
© the authors, 2005.
This page updated 5.1.05