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McAlpine Compression & BSP Straight Connector 40mm T31U

4.1 (19 reviews)
SKU: 260223155537194 EAN: 5036484078797

Compare 2 prices for McAlpine Compression & BSP Straight Connector 40mm T31U — from £2.59 to £2.64 across 2 UK sellers including Toolstation, Screwfix.

£2.59 2h ago
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Compare Prices from 2 Sellers

Prices updated 20 Apr 2026
2
Screwfix
£2.64 +£0.05
12h
#2 Screwfix
12h ago
£2.64 +£0.05
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Customer Reviews 19

4.1
19 reviews
5 star
14
4 star
1
3 star
0
2 star
0
1 star
4
Just what I needed
5.0
October 6, 2025
Samalam24 Verified Purchase

P trap was slightly short from my new bath waste trap, this was perfect to bridge the gap

TRAFFIC - around this TS TERRIBLE
1.0
March 31, 2025
F Danny Verified Purchase

Didn't collect item as traffic so bad getting to that Toolstation. Won't order from that TS again

What is it for?
1.0
December 21, 2024
azghaaa Verified Purchase

The BSP end doesn't fit on the BSP end of a McAlpine S trap. It can be made to fit by enlarging the female end slightly, which is easy enough because it's plastic but it seems rather odd to need to do this so I wonder exactly what the intended purpose of this fitting is?

Mcalpine, great quality as per normal,
5.0
December 18, 2024
Jennas da Verified Purchase

mcalpine quality fittings, a bit pricier than own brand

Fittings
5.0
November 25, 2024
Terence brown Verified Purchase

Retaining collar which went up against tank was very small

Not used yet
5.0
October 21, 2024
East Yorkshire Blacksmith Verified Purchase

Not used yet - in van for next job, but it looks fine

Fits on a wavin HEPVO waterless trap. Thank me later.
5.0
June 27, 2023
CopperGas Verified Purchase

Bought this to fit to a HEPVO waterless trap. Much cheaper than the wavin one and fits directly on and does the same job!

5.0
December 10, 2022
NMR Verified Purchase
5.0
August 22, 2022
Hubes Hogmanay Cumberdale Verified Purchase
5.0
July 24, 2022
Rolo1 Verified Purchase
5.0
April 13, 2022
Big Tim Verified Purchase
5.0
March 8, 2022
kxewjhb98udoqv0p81tp5uyg1 Verified Purchase
Always Buy The Best!
5.0
October 10, 2021
Carleton Verified Purchase

If you want the best fitting that’s going to the job first time and every time, pay just that little bit extra and buy McAlpine!

Functional
4.0
April 26, 2021
emaycee Verified Purchase

Does what it's supposed to

Does not fit 40mm pipe
1.0
October 22, 2020
ReadingJoe

The compression side does not fit a 40mm pipe as it is straight inside instead of tapered as other compression connectors are.

Does the job, good price
5.0
June 8, 2020
Sparxesparks Verified Purchase

To convert a 90 degree bend into compression fit. Not sure why mcalpine don't just make a 90 degree bend with compression fit but hey ho.

Be careful!
5.0
May 7, 2020
Slash22 Verified Purchase

I bought this to connect a small section of waste pipe for a washing machine to a flowplast bottle trap with a 2-1/2” BSPP top connection. This straight connect does NOT fit it directly! I had to file down the inside to get it to fit. I’m not a plumber so don’t know what this is meant for but once filed down the inside, the parts threaded together fine and no leaks. I think the issue came from the bottle trap specs rather than this.

1 found this helpful
Mislabelled...
1.0
October 31, 2019
Not connected Verified Purchase

You would expect a 40mm (1 1/2") BSP adaptor to fit a 1 1/2" trap - this doesn't, nor does it fit the 32mm trap, so not sure what it is for or what it fits, but it is NOT a 1 1/2" BSP straight connector.

1 found this helpful
5.0
May 10, 2019
ibsvb84tn78k9px2fx59yq3s5 Verified Purchase
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