tank remodeling,sump question? (last page)

[Delphinus]

Originally Posted by Elias@caco3reef.com

A question to those used Spa-flex.should the 1.5" spa flex it tight like a PVC on any fitting or should it be loose and use some kind of transition fittings.Because seems like mine fit loosely in the fitting and I bought this product G941HT… SPA FLEX from www.greenlinehose.com/
and the specs says 1.5" spa-flex with ID 1.65 AND od 1.90

I searched on G941HT on that site and came up with this: http://www.greenlinehose.com/_pdf/hose/2.Water.pdf#search="G941HT"

... which I have to say looks like some kind of rubber? That's not spa flex. Spa flex is, literally, flexible PVC pipe. You use PVC cement same as like for rigid PVC (you can use regular PVC cement but the flex PVC cement is clear because it has a little bit of give to it) and yeah the fittings are ordinarily a pretty tight fit (same as rigid PVC would be - it's the same fittings).

[eli@fijireefrock.com]

this is the information on the product I bought as it is on the bottom of the spec sheet

Spa Flex Hose is designed to replace PVC pipe on Hot Tubs
and Spas. G941HT has the IAPMO plumbing safety approval
and uses the same external glue-on schedule 40 fittings
as rigid pipe but is much easier to install. Hose will bend
without heating and will follow the curves and corners on
a spa without having to use elbows. Spa Flex is ordered
by nominal pipe size.

G941HT… SPA FLEX
Construction: Cream coloured, flexible PVC, embedded with a
rigid PVC helix.
Interior: Flexible PVC, smooth for unrestricted flow.
Exterior: Smooth, cream coloured, weather resistant PVC.
Temperature Range: -20°C (- 4°F) to 65°C (150°F).
Note: Please use a PVC-to-Flex cement for attaching PVC fittings
to hose. Suitable cements include:
– Permalite Plastic #VIC 504
– Uniflex Pipe Cement
– United Elchen 6700 Series PVC to Flex
– Weld-On #795 PVC/Flex.

And these are the specs I asked for

size 11/2" model # G941HT-150 I.D. 1.65" O.D. 1.90"

And by measuring the ID and OD of what I bought I think they gave me the wrong size as it measures to the same specs as the 11/4" spaflex
Back to the store tomorrow to replace the size

[gregzz4]

Elias, that G941HT is the correct stuff. It is normal for it to seem sloppy after it cures. This is why it works so well.
Make sure you hold it in place for a few minutes while it starts to cure as it can slip apart much easier than rigid pvc.
Not sure what cement you plan on using, but anyone I talked to recommended Weld-On 795 and it worked well for me.

[Seriak]

I bought mine from Western Pump. I just asked for 3/4" and 1" spa flex. It was very tight when I tried to put it in the the fittings dry. Once the glue is on, it goes in a little easier. I was told not to use primer so I didn't and no leaks so far.

[sphelps]

The stuff in the catalog looks like standard spa flex to me but I don't recall it being sloppy within fittings, it's actually very hard to dry fit, needs glue to slide in as others have said.

Sounds like you're correct in your assumption, if it measures the same as 1-1/4" spa flex then that's probably what it is.

[Delphinus]

Originally Posted by Seriak

I bought mine from Western Pump. I just asked for 3/4" and 1" spa flex. It was very tight when I tried to put it in the the fittings dry. Once the glue is on, it goes in a little easier. I was told not to use primer so I didn't and no leaks so far.

+1 .. there is a primer you can use if you want, also can be had from Western Pump.

When I google G941HT I see it looks like the same spaflex I'd get from Western Pump so I don't know what the heck that rubber hose page from greenline was all about. I'm going to blame DST. DST screws up everything. Stupid DST. Ask me a question tomorrow and hopefully I'll answer it better. That's my story and I'm sticking with it. DST.

[The Codfather]

Originally Posted by Seriak

I was told not to use primer so I didn't and no leaks so far.

Did someone just tell you this? Or is it in literature? The use of the primer with the solvent weld is some cases a must. But depends on application and which brand name. The only one I have seen even recommends a primer, but not a must, but only in a drainage application, not a pressure application. Just my 2 cents.

[Seriak]

Originally Posted by The Codfather

Did someone just tell you this? Or is it in literature? The use of the primer with the solvent weld is some cases a must. But depends on application and which brand name. The only one I have seen even recommends a primer, but not a must, but only in a drainage application, not a pressure application. Just my 2 cents.

I read the tip in Brad's tank Journal and so I googled it and the general consensus was to not use primer for spaflex. So that is what I did.

[jjntm]

I am a plumber... and I can tell you that primer is only meant to clean the pipe before applying the cement... It is not needed under such low pressure systems like our aquariums. I have used the spa flex well for my 220 gal tank upgrade and never used primer and have no issue's... The one thing about the spa flex to make you aware of... for the first month or so the flex line is almost slimy, but does not affect the water quality... if you have any questions feel free to pm me