Hello Steve,
I checked into the EBAA product. They are epoxy coated internal and
out. You can get them with linear movement of 4". 8" or 12" ranges. You can get
a model that is "Pressure compensated" (will not try to get longer as the
pressure goes up) and one that is not. Yes you can get just a "ball joint"
fitting and bolt to the ends of the other one to give 40° deflection per end.
I had a Metraflex on the end from the gangway before and am waiting
till we can get it fished off the bottom of the river to see what it looks like.
Friday, February 17, 2017, 12:23:22 PM, you wrote:
> I'm watching this thread with a keen interest because 2019 NFPA 14 just went
> into cycle and we've formed task group to lay the groundwork for marine
> standpipe system requirements. The Yelomine product is very intriguing -
> thank you John for sharing that.
> I'd like to comment on a couple of the other posts - to Scott M's share of
> the EBAA flexible expansion joint, it's described as being capable of
> accommodating ground motions, with up to 20° deflection "per ball". I don't
> think the range of ground motions is adequate to encompass the range of
> gangway angles, but I wonder if multiple balls can be closely linked. I'm
> also wondering how corrosion resistant the fittings are in an exposed
> maritime environment.
> There were multiple mentions of the Metraflex-type connectors, i.e. rubber
> lined/braided SS hose. I presumed those would be the logical solution until
> I spoke with two manufacturers of this class of product at the NFPA
> convention last June. If I'm understanding them correction, the
> manufacturers won't warrant these fittings in such an application because
> marine air will aggressively degrade the SS hose. Interesting, if the
> fitting is submerged it will supposedly last a lot longer but there's not
> been any testing of this application.
> Steve L.
> -----Original Message-----
> From: Sprinklerforum [mailto:[email protected]]
> On Behalf Of Travis Allen- Allen Engineering
> Sent: Friday, February 17, 2017 8:23 AM
> To: [email protected]
> Subject: RE: Sprinklerforum Digest, Vol 47, Issue 24
> I haven't designed any such systems but have seen braided hose (not sure if
> it was a metraflex product) utilized for the dock to land connection or
> gangway to dock connection.
> Travis E. Allen, PE
> Principal
> Allen Engineering, PLLC
> -----Original Message-----
> From: Sprinklerforum [mailto:[email protected]]
> On Behalf Of [email protected]
> Sent: Friday, February 17, 2017 6:28 AM
> To: [email protected]
> Subject: Sprinklerforum Digest, Vol 47, Issue 24
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Best regards,
Charles Thurston [email protected]
MYRTLE BEACH FIRE SAFETY GROUP
A Division of Pye-Barker Fire Safety
1445 Cannon Road
Myrtle Beach, SC 29577
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