RE: [APD] AAS Check Valve

["Douglas Guynn" <d_guynn at sbcglobal.net>]

If you plan on keeping less than 15 psig on your system, go to
www.mcmaster.com and enter "diaphragm check" (no quotes) in the search box.
I would suggest the Nylon body with Viton Diaphragm #47245K18 for $5.85.

If you want to run more than 15 pisg, go to page 387 and choose either the
PVC Spring-Loaded Ball Check Valves (#7933K31) or the Spring-Loaded Ball
Check Valves with Barbed Connections (#6079T53 @ $3.56 or 7757K13 @ $3.23)

Enter usual disclaimers.


-----Original Message-----
From: aquatic-plants-bounces at actwin_com
[mailto:aquatic-plants-bounces at actwin_com]On Behalf Of Vaughn Hopkins
Sent: Sunday, April 17, 2005 11:21 AM
To: aquatic digest
Subject: [APD] AAS Check Valve


I am in the throes of researching whether or not to use a check valve
in my CO2 system when I finally get my tank set up in a couple of
months.  Looking thru past comments in this mailing list it seems not
to be a settled issue as to whether or not such a valve is needed or
even advantageous.  Are there any new thoughts on that question?  And,
has anyone tried the AAS Check Valve,
http://www.automatedaquariums.com/fk98553.htm  , which looks ideal for
that use?  At this time I am leaning towards using a simple ball shut
off valve instead of the check valve, but that decision I will make
later.  (I already have everything else that I think I need to set up
the system, other than the CO2 cylinder.)  Thanks for any input I can
get on this.

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