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Re: My last word on needle valves
At 03:48 PM 1/18/01 -0500, Paul Sears wrote:
>That (200 kPa) seems a pretty high pressure to leave on a hose.
I agree.
> I use
>stainless steel tubing and Swagelok fittings between the regulator and
>the needle valve, and that is for a pressure of less than 50 kPa.
How nice.
>It's overkill, I know, but it means I _can_ use much higher pressure
>if I want to.
It does. And if that is the tradeoff you wish to make, it is a fine choice.
> > So all in all, I have to say the risks of a needle valve outweigh the
> > benefits FOR ME.
>
> I think that is a risk of a _hose_ not a needle valve.
It is the risk of a hose/needle valve combination.
M customers have 250+ systems in place with hose.
So I would recommend they skip the needle valve, and just watch their systems.
As I have from the beginning.
--
Dave Gomberg, San Francisco mailto:gomberg at wcf_com
NEW Planted Aquaria Magazine: http://www.wcf.com/pam
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