M27 Thread Pipe Cap?

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rg12   100 kW

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M27 Thread Pipe Cap?

Post by rg12 » May 26 2020 3:49pm

Am desperate to find this!
I have this water pump with a missing cap for the bottom pipe that comes out of it.
It's a plastic pipe with an external thread that needs a cap with an inner thread, an M27 thread.
I don't care if it's a plastic cap, brass or whatever, I just need the cap at any depth.

goatman   1 MW

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Re: M27 Thread Pipe Cap?

Post by goatman » May 26 2020 4:28pm

rg12 wrote:
May 26 2020 3:49pm
Am desperate to find this!
I have this water pump with a missing cap for the bottom pipe that comes out of it.
It's a plastic pipe with an external thread that needs a cap with an inner thread, an M27 thread.
I don't care if it's a plastic cap, brass or whatever, I just need the cap at any depth.
if youre in a pinch you can always jump up with a bushing or a coupler, you just need something with a female m27 thread. its kind of mickey mouse but??

rg12   100 kW

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Re: M27 Thread Pipe Cap?

Post by rg12 » May 26 2020 4:31pm

goatman wrote:
May 26 2020 4:28pm
rg12 wrote:
May 26 2020 3:49pm
Am desperate to find this!
I have this water pump with a missing cap for the bottom pipe that comes out of it.
It's a plastic pipe with an external thread that needs a cap with an inner thread, an M27 thread.
I don't care if it's a plastic cap, brass or whatever, I just need the cap at any depth.
if youre in a pinch you can always jump up with a bushing or a coupler, you just need something with a female m27 thread. its kind of mickey mouse but??
Worst case I just order an M27 nut and create a seal out of it but that's too hacked up for something I already need to order online and wait a month for it to arrive

markz   100 GW

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Re: M27 Thread Pipe Cap?

Post by markz » May 26 2020 6:38pm

rg12 wrote:
May 26 2020 4:31pm
Worst case I just order an M27 nut and create a seal out of it but that's too hacked up for something I already need to order online and wait a month for it to arrive
Machine shop wont be busy, but it'd expensive.
Find something else thats M27, anything, and figure out to cap it.

The pumps plastic could be coupled to something more convenient to Home Depots or a plumbers supply store. Would mean your physically changing the pumps plastic pipe whether you cut a piece off, slip something over and glue it.

Pictures would be good, pictures are always good.

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marty   10 MW

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Re: M27 Thread Pipe Cap?

Post by marty » May 26 2020 7:39pm

Old dusty auto parts store might have a brass cap in their trays of old dusty brass caps.

Look here:
https://www.mscdirect.com/product/details/04254405
1/2 x M27 Pipe, 1,000 psi, Brass ISO Port Adapter
NPTF x Metric Adapter, Viton, 1/2-14" Thread
I am getting male and female confused. Could be why I have no children?

Might this pipe size also be used with hydraulics? There is a whole nother world of brass hydraulic fittings.

If you tell us year, make, model, and engine size of whatever has this water pump? With some searching of the internet ya might find someone else who is missing the same part and what solution they came up with.

Here is a list of every junk yard on planet earth and easy to search parts data base.
https://www.car-part.com/

Buy a M27 nut and have a welder weld a hex or round piece of metal to it.

Is this "bottom pipe that comes out of it" clean? If yes? Spray male threads with some thin oil. Fabricate a cap from epoxy putty. Let it dry. Remove and reinstall with thread sealer.

Some type of cork pounded into inside of pipe.

Rubber hose on outside of pipe fastened with hose clamp. Plug rubber hose with hose clamp and something round and plastic from plumbing supply place.

If ya like to do things the hard way? Draw the part with https://www.solidworks.com/ then print it. Expensive 3d printers can print with metal.

I go to sleep now. Sure that I will have more ideas in the morning.
Last edited by marty on May 26 2020 7:46pm, edited 1 time in total.
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markz   100 GW

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Re: M27 Thread Pipe Cap?

Post by markz » May 26 2020 7:43pm

Whats that specialty store that sells everything, nuts, balsa wood, tools, EV'er use it.
Begins with a C, heavy online presence, ships everywhere, big store, sells millions of stuff.

Something like Lee Valley in Canada.

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marty   10 MW

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Re: M27 Thread Pipe Cap?

Post by marty » May 26 2020 8:50pm

Is this water pump new in a box and ya somehow lost the pipe cap? If yes? The manufacturer / rebuilder of the pump might be able to sell a piece of the part.

Not a cap but here is a plug.
https://www.mcmaster.com/4822T285
Extreme-Pressure 316 Stainless Steel Threaded Pipe Fitting
Plug with Hex Drive, M27 x 2.00 mm Thread

Not finding M27 x 2.00 mm Thread - Pipe Coupling

Look here:
https://ph.parker.com/us/en/fittings
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Balmorhea   10 kW

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Re: M27 Thread Pipe Cap?

Post by Balmorhea » May 26 2020 8:53pm

"M27" sounds a whole lot like 3/4" NPT (or NPS). More precisely, M26.7 x 1.8

markz   100 GW

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Re: M27 Thread Pipe Cap?

Post by markz » May 26 2020 9:20pm

marty wrote:
May 26 2020 8:50pm
https://www.mcmaster.com/4822T285
Thats what I was thinking of, a C in the name somewhere.

goatman   1 MW

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Re: M27 Thread Pipe Cap?

Post by goatman » May 26 2020 9:31pm

is this one of those k archer pressure washers, are you sure its m27 and not just a brass hose bib cap you need?

https://www.bing.com/images/search?view ... ajaxhist=0

rg12   100 kW

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Re: M27 Thread Pipe Cap?

Post by rg12 » May 27 2020 12:20am

goatman wrote:
May 26 2020 9:31pm
is this one of those k archer pressure washers, are you sure its m27 and not just a brass hose bib cap you need?

https://www.bing.com/images/search?view ... ajaxhist=0
That's what I need exactly but in M27!

This is the pump:
https://www.wallashops.co.il/%D7%9E%D7% ... 6micipu_78

The pipe isn't shown in the photo, it's close to the bottom diagonally facing the ground (on the other side of the blue jug in the photo).

It's a plastic pipe with external threads (kind of fine threads) that sticks about 7cm out of the blue jug.

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Re: M27 Thread Pipe Cap?

Post by goatman » May 27 2020 12:37am


rg12   100 kW

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Most common M27 Thread Pitch?

Post by rg12 » May 27 2020 6:53am

I thought that there is only 2.0mm but turns out that there's 1.0, 1.5, 2.0, 3.0

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marty   10 MW

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Re: Most common M27 Thread Pitch?

Post by marty » May 27 2020 2:09pm

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marty   10 MW

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Re: M27 Thread Pipe Cap?

Post by marty » May 27 2020 8:28pm

Why did I think "water pump" was on a water pump on a internal combustion engine?

OK now I think we got a swimming pool? Drain on sand trap looks something like this?
71lFN25-0kL._AC_SL1292_.jpg
71lFN25-0kL._AC_SL1292_.jpg (97.02 KiB) Viewed 181 times
Go to a swimming pool supply place.

Find the parts list for your [pump with sand trap].

Don't know if different brands of pool filters use the same size drain cap?

Here is a similar looking Sand Filter with Water Pump for sale in the US
https://xtremepowerusa.com/products/xtr ... e-3450-rpm
XtremepowerUS 13" Sand Filter with 3/4HP Water Pump Above Ground Swimming Pool Pump 2400GPH
pump.jpg
pump.jpg (95.88 KiB) Viewed 181 times
Image from wallashops.co.il
560X500_0_jpg.jpg
560X500_0_jpg.jpg (13.15 KiB) Viewed 181 times
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marty   10 MW

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Re: M27 Thread Pipe Cap?

Post by marty » May 27 2020 10:28pm

Forget that XtremepowerUS. This one looks more like the one from wallashops.co.il

https://swimline.com/products/1-3-hp-in ... stem-71225
71204_1000w.png
71204_1000w.png (402.19 KiB) Viewed 173 times
My guess that Drain Plug & O-RIng - 71204 will fit your sand filter. $4.90
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marty   10 MW

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Re: M27 Thread Pipe Cap?

Post by marty » May 27 2020 10:32pm

https://www.amazon.com/Hydrotools-Swiml ... B01EB48S86
Hydrotools Swimline Model 71204 Replacement Drain Plug and Seal for Sand Filter Systems with 12 and 14 Inch Tanks
51O5AZEonqL._AC_SL1000_.jpg
51O5AZEonqL._AC_SL1000_.jpg (26.28 KiB) Viewed 173 times
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goatman   1 MW

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Re: M27 Thread Pipe Cap?

Post by goatman » May 28 2020 4:16pm

you can also try an expansion plug

https://www.marshallshardware.com/produ ... =2-520-551

get them at hardware stores in the plumbing section or the boating section

rg12   100 kW

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Re: M27 Thread Pipe Cap?

Post by rg12 » May 28 2020 5:55pm

You guys are geniuses!
Thank you so much :)

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