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JG Speedfit Metric to Imperial Stem-Stem Adaptor 15mm OD - 3/8" OD

John Guest Stem-to-Stem Adaptor, 15mm OD x 3/8-inch OD

by JG Speedfit
£5.24 - £5.24
£5.24
£5.24 - £5.24
£5.24

John Guest metric-to-inch stem-to-stem adaptor, 15mm stem outside diameter x 3/8-inch stem outside diameter. Both ends are plain stems for compatible receiving fittings; this is not a two-socket tube coupler.

Confirm the actual part, both stem sizes and the matching receiving fittings before ordering. The imperial size is 3/8 inch, not 3/8mm, and the 15mm end is a stem rather than a pipe-receiving socket.

See delivery and collection options. For matching help, WhatsApp 020 8702 8080 or 07737 263641 with safe external photos and markings.
🚚 Next-day delivery on orders placed before 3pm Mon–Fri
📍 Same-day click & collect — 24 Western Avenue, Acton W3 7TZ (Mon–Fri 7:30am–5:30pm · Sat 8am–1pm)
🚚 Free delivery on orders over £50

Check the stems and receiving fittings

The manufacturer identifies NC478 as a metric-to-inch stem-to-stem adaptor; its current US listing uses reference NC478-US and gives 15mm and 3/8-inch stem outside diameters. Confirm the reference and revision of the actual item supplied rather than assuming every regional suffix has identical ratings or approvals.

Match the adaptor to the receiving fittings and their seals, retention system and operating requirements. Generic descriptions of push-fit collets, O-rings or tube-to-hose stems do not establish the construction or contents of this stem adaptor.

Check the exact model's current fluid suitability, pressure and temperature limits and required local approval. Do not transfer general Speedfit heating, compressed-air, mixed-gas, vacuum, FDA or NSF claims to this item without the applicable model evidence. Confirm the supplied quantity; a manufacturer's bag quantity is not the quantity sold here.

See the manufacturer's stem-to-stem adaptor listing for the specific reference. No installation or release procedure is supplied.

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