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Nupro Needle Valves

> Date: Tue, 9 Sep 1997 16:11:48 -0700
> From: "Frank I. Reiter" <FIR at istar_ca>

> I discovered, to my dismay, that the fully closed position on the
> Nupro valves yield to many bubble per second to count at 10 psi, and I
> have had to resort to playing (tediously) with the (rather course)
> shutoff valves to get it down to a couple bubbles per second.

Are these the model B-4MG2 valves?

Odd. I have our CO2 regulator set for around 20 psi and the B-4MG2
valve can stop the flow completely and still have some "turns" left to

> I see these valves recommended quite frequently.  Has nobody else
> encountered this problem?

Not me.