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sikazwej
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Join Date: Apr 2009
Posts: 5

Rubberised Butterfly Valves

07/30/2010 3:42 AM

I am struglling to find the best rubber to be used on a butterfly valve with a medium of sea salty water, the current EPDM becomes hard after sometime and cracks,

Whats the best rubber that i can use.
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Anonymous Poster
#1

Re: Rubberised Butterfly Valves

07/30/2010 4:35 AM

FFKMs
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RDGRNR
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Engineering Fields - Instrumentation Engineering - New Member

Join Date: Dec 2009
Location: San Antonio, TX USA
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#2
In reply to #1

Re: Rubberised Butterfly Valves

07/30/2010 8:33 AM

?

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Doorman
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Hobbies - DIY Welding - Don't Know What Made The Old Title Attractive... Popular Science - Weaponology - New Member United States - US - Statue of Liberty - 60 Year Member

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#4
In reply to #2

Re: Rubberised Butterfly Valves

07/30/2010 2:56 PM

FFKM refers to Perfluoro Elastomers.

I might have said Type 1 or Type 2 FKM.

If the guest who posted #1 had bothered to define for us the TLA (in this case a FLA) he may have gotten a GA vote.

TLA = Three Letter Abbreviation FLA = Four Letter Abbreviation GA = Good Answer

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ky
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#6
In reply to #4

Re: Rubberised Butterfly Valves

07/30/2010 10:40 PM

Done. GA. ROLMAOASA, NLA, Nine Letter Abbreviation.

I hope I can still remember what they stand for, if someone asks.

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Anonymous Poster
#8
In reply to #4

Re: Rubberised Butterfly Valves

08/01/2010 8:42 PM

Apologies. I assumed the OP might know what was being referred to without considering that others might also be following the post and not know what it meant.

I shall make things clearer next time.
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kramarat
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#3

Re: Rubberised Butterfly Valves

07/30/2010 1:30 PM

This may work,http://en.wikipedia.org/wiki/Silicone_rubber

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energygod
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Location: Cincinnati, Ohio, USA
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#5

Re: Rubberised Butterfly Valves

07/30/2010 10:34 PM

Have you tried Teflon coated blades and seals?

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Anonymous Poster
#7

Re: Rubberised Butterfly Valves

08/01/2010 8:00 AM

The best thing is to contact your valve supplier for this problem. If not known, contact M/s Intervalve, Pune or M/s Audco , Chennai.
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piriet
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Join Date: Jul 2010
Posts: 27
Good Answers: 1
#9

Re: Rubberised Butterfly Valves

08/02/2010 2:43 AM

I have worked some years ago for a butterfly valves manufacturer, and I can confirm EPDM is he best choice for sea water application. I you encounter problems, it is more likely because of the poor quality of the EPDM than because it is EPDM.
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martinev@inter-sil.com
Associate

Join Date: Sep 2007
Posts: 25
#10

Re: Rubberised Butterfly Valves

08/02/2010 12:50 PM

The best rubber for this application is silicone wich can last much longer and perform better under sea conditions than the best EPDM in the market. Try to use Phenyl Silicone.
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Anonymous Poster (3); Doorman (1); energygod (1); kramarat (1); ky (1); martinev@inter-sil.com (1); piriet (1); RDGRNR (1)

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