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Category: Plumbing & Heating โบ John Guestยฎ Air Supply Systemร
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![John Guestยฎ Stem Elbow Coupling 12mm - Pack of 5 [JGCET12]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020518/JGCET12__57345.1720559124.webp)
![John Guestยฎ Stem Elbow Coupling 10mm - Pack of 5 [JGCET10]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020459/JGCET10__17013.1720559125.webp)
![John Guestยฎ Reducer 28-15mm - Pack of 2 [CAS2815]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21225246/CAS2815__68478.1720557520-1200x1200.webp)
![John Guestยฎ Line End Plug 28mm - Pack of 5 [CAS28P]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21230003/CAS28P__46628.1720557531-1200x1200.webp)
![John Guestยฎ Equal Tee Coupling 8mm - Pack of 5 [JGCT8]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020844/JGCT8__76553.1720559140.webp)
![John Guestยฎ Equal Tee Coupling 10mm - Pack of 5 [JGCT10]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020731/JGCT10__35467.1720559137.png)
![John Guestยฎ 36m 5-Drop Air Supply System Kit 28mm [CASKIT528]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21231753/CASKIT528_DFC1797550__54035.1753186514-1200x1200.webp)
![John Guestยฎ 18m 3-Drop Air Supply System Kit 28mm [CASKIT328]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21231255/CASKIT328_DFC1797539__70320.1753186511-1200x1200.webp)
![John Guestยฎ 12m 2-Drop Air Supply System Kit 28mm [CASKIT228]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21230833/CASKIT228_DFC1796835__36643.1738328712-1200x1200.webp)
![John Guestยฎ Straight Adaptor 8mm x 3/8"BSP - Pack of 5 [JGC838]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020323/JGC838__88914.1720559124.png)
![John Guestยฎ Polyethylene Tubing 12mm x 100m - Black [PT12100]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23040717/PT12100__15601.1720560399.webp)
![John Guestยฎ Equal Tee Coupling 12mm - Pack of 5 [JGCT12]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020752/JGCT12__21635.1720559138.png)
![John Guestยฎ Equal Tee 28mm - Pack of 5 [CAS28ET]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21225835/CAS28ET__89109.1720557531-1200x1200.png)
![John Guestยฎ Elbow Coupling 8mm - Pack of 5 [JGCE8]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020441/JGCE8__70563.1720559127.webp)
![John Guestยฎ 12m 2-Drop Air Supply System Kit [CASKIT2]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21230525/CASKIT2_DFC1261116__77154.1720588238-1200x1200.png)
![John Guestยฎ 12m 2-Drop Air Supply System Kit 15mm [CASKIT215]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21230705/CASKIT215_DFC1797529__11375.1753186513-1200x1200.webp)
![John Guestยฎ Straight Adaptor 6mm x 1/4"BSP - Pack of 5 [JGC614]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020248/JGC614__19094.1720559124.webp)
![John Guestยฎ Stem Elbow Coupling 8mm - Pack of 5 [JGCET8]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020554/JGCET8__09220.1720559125.png)
![John Guestยฎ Stem Elbow 22mm - Pack of 2 [CAS22SE]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21224926/CAS22SE__41435.1720557521-1200x1200.webp)
![John Guestยฎ Elbow Coupling 10mm - Pack of 5 [JGCE10]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020348/JGCE10__59552.1720559125.png)
![John Guestยฎ Coupling Assortment 12mm 15pc [AB071JG]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21122326/AB071JG__09695.1720554886-1200x1200.webp)
![John Guestยฎ Coupling Assortment 10mm 20pc [AB070JG]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21122239/AB070JG__27315.1720554883-1200x1200.webp)
![John Guestยฎ Brass SuperThread Straight Adaptor 12mm x 3/8"BSP - Pack of 2 [JGBC1238]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23015924/JGBC1238_DFC1832951__20575.1743591608.webp)
![Metric/Imperial John Guestยฎ Thread Adaptor Assortment 30pc [AB072JG]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21122416/AB072JG__32760.1720554884-1200x1200.webp)
Metric/Imperial John Guestยฎ Thread Adaptor Assortment 30pc [AB072JG]
£89.05
In stock
Brand: John Guest![John Guestยฎ Straight Coupling 10mm - Pack of 5 [JGCS10]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020613/JGCS10__15052.1749473707.png)
![John Guestยฎ Reducer 28-22mm - Pack of 2 [CAS2822]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21225403/CAS2822__21984.1720557521-1200x1200.webp)
![John Guestยฎ Brass Straight Adaptor 28mm x 1"BSPT [CAS28BSA]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21225535/CAS28BSA__71297.1720557522-1200x1200.webp)
![John Guestยฎ 18m 3-Drop Air Supply System Kit 15mm [CASKIT315]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/21231127/CASKIT315_DFC1797534__87681.1753186511-1200x1200.webp)
![John Guestยฎ Straight Coupling 12mm - Pack of 5 [JGCS12]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020632/JGCS12__77539.1720559137.webp)
![John Guestยฎ Straight Adaptor 10mm x 1/4"BSP - Pack of 5 [JGC1014]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020229/JGC1014__14886.1720559124.png)
![John Guestยฎ Stem Elbow Coupling 6mm - Pack of 5 [JGCET6]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020536/JGCET6__23508.1720559125.png)
![John Guestยฎ Elbow Coupling 12mm - Pack of 5 [JGCE12]](https://powerhub-s3-london.s3.eu-west-2.amazonaws.com/media/2026/10/23020408/JGCE12__78432.1720559124.webp)
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