On Thu, 10 Dec 2009 02:17:27 -0800 (PST), Tom
wrote:

Hi All

I've been defeated by shut off valves seeming to go sticky and then
the plastic screw on valve handle snapping in the centre where the
screw fixes it. But I've just found the reason... well in my case at
least. The plastic hose (cold inlet pipe) with its plastic hand screw
tight threaded (female) connector fouls the full path of the valve's
plastic handle... but only when fully turned on. So it doesn't notice
when installing the inlet hose.

This is what makes the valve seem like its failing. The clearance is
so tight that the hose's screw on connector screws down too far
causing this problem. I wonder if the use of an additional washer
inside the inlet valve would help?

Anyone else noticed this happening?
Rgds., Tom

Nope.Dunno where you got your hoses from but I have used several over
the years and never ever experienced this .
Buy another pair of hoses and try them .