Brain,
Depending on the pressure service you may find bronze valves on PSUBS. Some
builders use all stainless steel for possible greater dependability. What
is your designed service depth and your design safety factor...the one times
the other gives you the MINIMUM rating for the valve (and associated piping
and fittings). Depending on how the bronze and SS is used there may be
corrosion issues, good paint and zincs may solve some of those issues if
they develop. Using all SS while costlier simplifies design and maintenance
issues.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
As scarce as the truth is, the supply has always been in excess of the
demand.
-Josh Billings
_____________________________________________
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Saturday, January 03, 2009 11:43 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Soft ballast venting valve
Jay,
Would bronze valves be a good choice? Why don't we see any
bronze valves on pubs ? How do bronze and stainless get along together?
I know, I ask alot of questions.
Brian
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Jay K. Jeffries
Sent: Saturday, January 03, 2009 6:58 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Soft ballast venting valve
Brian,
Stick with the bronze valves as your suggested modified farm valves
will only be trouble.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
As scarce as the truth is, the supply has always been in excess of
the demand.
-Josh Billings
_____________________________________________
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Saturday, January 03, 2009 9:49 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Soft ballast venting valve
Thanks Jay,
Lined SS valves ? These butterfly valves that
we use here on the farm are usally a cast iron body with a metal disk ( the
"butterfly") in the middle for the shut off device. There is rubber around
the disk as well as rubber around the perimeter of the mating opening of the
cast iron valve body. It would be easy enough to replace the metal disk
with stainless and maybe I could epoxy the cast body. or possibly find a
bronze one.
Brian
-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Jay K. Jeffries
Sent: Saturday, January 03, 2009 5:49 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] Soft ballast venting
valve
Brian,
Ball valves typical get tight from not operating the valve
on at least a scheduled basis. Care has to be given that sand and/or
calcite deposits occur in the valve which can damage the sealing surfaces or
scratch the ball. Butterfly valves may be an option as they have a limited
capability to throttle flow where ball valves tend to be all or nothing
(100% flow or 0%). Butterfly valves can also be affected by sand and
calcite deposits. Butterfly valves are available in SS but are very pricey
when found. Another option to contain costs is to use SS lined valves vs. a
complete body of SS.
R/Jay
Respectfully,
Jay K. Jeffries
Andros Is., Bahamas
As scarce as the truth is, the supply has always been in
excess of the demand.
-Josh Billings
_____________________________________________
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Brian Cox
Sent: Saturday, January 03, 2009 8:39 PM
To: Personal_Submersibles@Psubs. Org
Subject: [PSUBS-MAILIST] Soft ballast venting valve
Happy New Year All,
Does anybody have a suggestion for a ballast venting valve
for a soft tank ( my ferro structure ) that is around 1 1/2" diameter or
maybe 2" , I will most likely use a stainless ball valve but I'm worried
that eventually it is going to sieze up on me. It seems like those ball
valves get awfully hard to turn after a while. The butterfly valves that
I've seen ( for farm irrigation ) seem to turn easier , but I haven't seen
them in stainless.
Thanks
Brian, Ventura, CA
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