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Tool Talk Discussion Forum

BSP and BSPP fittings.

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J Schwiebert

06-30-2007 14:49:54

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O. K. I know what BSP fittings are. What are BSPP fittings? Thanks in advance. J.

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Andy Traxel

07-01-2007 21:04:41

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

I've run into some Japanese engines with tapered pipe thread fittings with one additional thread/in than NPT ones. 1/8-28 for example. After some investigation, I found that JIS (Japanese Industrial Standard) pipe thread specs are essentially the same as BSP specs. And I've never run across "metric" tapered pipe threads. So I wonder if BSP specs are the defacto metric pipe threads. That might explain why they're used on a Swedish machine.

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Dave in Tx

07-01-2007 18:03:53

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

Parker makes them, not sure about Gates and Weatherhead.

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Ga Jack

06-30-2007 18:51:29

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

Google bsp pipe fittings. several companies offer a variety of items. BSPP = British Standard Pipe Paralle (straight thread, no taper,
designed to be used/sealed with a gasket.
Some items I have my "great" local machine shop make for me to plumb some extream pump to piping combinations.
Man, i just reread this my speling is teriable today. good luxk on your searce, jackie

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Fawteen

06-30-2007 17:29:05

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

Whadda coinkydink.

We're flailing around with that issue at work. All the hydraulics on our Swedish-built packing line use BSPT fittings. It's close to NPT, close enough that a 1/2 NPT male fitting will screw into a BSPT female, but not close enough to seal up. And there's no way a male BSPT will thread into a female NPT. Been there, tried that.

We need a replacement flow control with 1/2 BSPT female ends on it, and our hydraulic supplier doesn't think we know what we are talking about and insists that it's 1/2" NPT. We finally got our general pipe and valve vendor down here to put the ol' Mark I eyeball on it, and surprise, surprise "That's not NPT..."

Um, Duh?

Now he's searching for a source.

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JV3CII

06-30-2007 16:18:45

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

We usually use BSP & BSPT here in the UK. BSP for the parralel stuff, BSPT for tapered.
Think the terms have got somewhat garbled crossing the pond.
No difference in pitch between the two, but the BSPT has a 1 in 16 taper on the diameter.
There is some info on the threads to be found on the link below.
Cheers, JV.

Thread info.

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Midwest redneck

06-30-2007 15:12:36

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 14:49:54

BSPP stands for British Standard Pipe Parallel. I just learned that 2 months ago. From a guy from europe.

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J Schwiebert

06-30-2007 15:58:18

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Re: BSP and BSPP fittings. in reply to Midwest redneck, 06-30-2007 15:12:36

Thanks. These are on equipment not made in the U-K. Now how much difference is there between them and BSP and who carries them? Thanks. J.

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Midwest redneck

06-30-2007 16:29:31

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Re: BSP and BSPP fittings. in reply to J Schwiebert, 06-30-2007 15:58:18

You will likely have to go to a hydraulic fitting place (not a hardware store) that sells hydraulic pumps, motors, and valves and hoses. you will have to pay cash if you dont have an account with them.

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