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jejton

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What is the difference between a reducing coupler and a bushing? I'm trying to reduce 1.5" pipe to .5" hose barb. I spent much too much time browsing savko and other sites and can't figure out which is the appropriate piece. I found one site that even has definitions and it says that both of them join two pipes of different sizes. So whats the deal?
 

GeoB

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Montgomery, NY
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A reducer coupling has female (comes-into) connectors on each end.
A bushing is male (goes-into) on one end and female (comes-into) on the other.

That is a large reduction, from 1.5 to .5 One pipe is over 3 times larger than the other. There will be a drastic reduction in flow, but maybe that's what you need.
 

jejton

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yeah - if you go to my tank thread (its not linked to my avatar ) you'll see that i am gravity feeding a drain to my skimmer. the drain is 1.25" but it is increased to 1.5". the inlet on the skimmer is .5" so i need to reduce that section of the pipe. Flow backup shouldnt be a problem as the line is tee'd off to a fuge.
 

jejton

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ok great thanks. one more question - should i go straight from the 1.5 to .5" or should i do a small series of recuctions with pipe sections in between? Is there any specific reason why I should use threaded picees ? They had slip insert pieces as well.
 

Sean

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you could get a reducing coupling 1 1/2" x 1/2" slip x slip then use a slip x hosebarb connector
yes go strait to 1/2"
 

jejton

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Suffolk
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ok thanks, now to find the proper reducing coupler. none of the stores in my area have it and it doesnt seem like savko does either though they have everything else i need. i would hate to have to order one little piece for .50 and pay $10 shipping :(
 

Sean

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well if you can't get the ideal piece sometimes you need to improvise a little. What type od hosebarbs do the have then work backwards from there.
 

jejton

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Suffolk
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Finding the hose barb wasn't a problem ( online at least). Its the reducing coupler that I'm having trouble finding. I did find a bushing thats 1.5" x .5" I believe but I wasn't sure how bushings are used.
http://www.savko.com/partlist.asp?pgid=3
Part #437209
If that works with Part # 474005 ( same page ) then I can go and place the order. What is a spigot fitting btw?
 

jejton

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Suffolk
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Why do the parts I linked in my post not do the job? Now I have another problem.

The outlet on the OR 2500 pump is 3/4" and the manual says when using it as a return pump I should connect a short piece of flexible tubing, using the included hose barb attachment, before connecting to rigid PVC. The problem is the hose barb is smaller than 3/4". This plumbing business is making me feel really stupid.
 

jejton

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Suffolk
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Perfect. Thanks Sean. Now I can go and order what I need. Perhaps you have advice for the other problem I'm having. The return is 3/4" and so is the outlet on the pump and the manual ( OR 2500 ) recommends a short section of flexible tubing before the rigid to reduce noise so i bought some spaflex but the hose barb adapter that comes with the pump is actually too small for the 3/4" pipe. Whats the best solution?
 

Tim

Tim`s Aquatics
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Rockland County
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Spa-flex needs to be primed and glued just like pvc. It should not be used as clamp on like regular tubing.The vinyl tubing is what they are most likely talking about...
 
Last edited:

jejton

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Suffolk
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I'm aware of the need to prime and solve spaflex, but still how do I connect it to my pump? I originally thought I can glue it to the hose barb but the hose barb is too small and now you're saying I can't glue it to the hose barb anyways.
 

GeoB

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Location
Montgomery, NY
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You are trying to use pipe and fittings which are incompatable. Barbed fittings usually are used with clear vinyl or reinforced clear vinyl soft tubing and clamps, and are able to be taken back apart if needed. Spaflex and ridgid pvc pipe are usually primed and glued to socket fittings, permenantly. You should not glue barbed ended fittings. They are not made to be glued!
The pump usually has threaded inlet and outlet openings. You would adapt the materials you are using to the threaded pump connections with threaded adapters. If you were using spaflex pipe and the pump had female threads, you would use a male thread adpter x glue socket fitting, glued to the end of the spa flex. With spaflex I would suggest using a glue socket union fitting or a unioned valve just after the outlet of the pump. I'm sorry if I haven't explained this so you can understand it.
 

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