That's why I'm recommending a forged 1/2" ball valve - full diameter inside
makes a big difference.  And the 1/2" copper stubs are just about 5/8" on
the outside to match your heater hose.  Avasilable at Rona for about $11.00
my cost.

On a side note, replacing the gate valves in your house with this type of
valve will give about 40% more volume at the taps.  Replacing the lines with
3/4" copper plus these valves will just about double it.  ;)  As an added
bonus, there is no noise from these valves because there is no turbulence
induced.

On Fri, Jun 24, 2011 at 12:58 PM, Richard A Jones <Jones@colorado.edu>wrote:

> A comment on the valves Terry Kay sells on his site++.  They
> are good, brass, Italian valves with fittings that go right
> into the hose, making installation very easy.  However,
> the diameter of the hole in the ball of the valve is
> smaller than the heater hose diameter by quite a bit.  So
> it reduces the flow.  That affects the front heater in
> very cold weather.
>
> ++ http://community-2.webtv.net/VanStuff/VanagonWestfalia
>
> Richard
>

--
Jake

1984 Vanagon GL 1.9 WBX - 'The Grey Van'
1986 Westy Weekender/2.5 SOHC Subie - 'Dixie'

Crescent Beach, BC

www.thebassspa.com
www.crescentbeachguitar.com
http://subyjake.googlepages.com/mydixiedarlin%27