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Imperial Compression Fittings

Imperial Compression pipe fittings for use with hot and cold systems in home and industrial applications, preferred by installers for use on copper and plastic pipes.

  • REF #1584

    Imperial Equal Ended Coupling

    Imperial Equal Ended Coupling

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    £11.16 INC VAT
    £9.30 EXC VAT

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  • REF #1586

    Imperial Reducing Coupling

    Imperial Reducing Coupling

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    £13.04 INC VAT
    £10.87 EXC VAT

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  • REF #1585

    Imperial To Metric Coupling

    Imperial To Metric Coupling

    £19.70 INC VAT
    £16.42 EXC VAT

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  • REF #1587

    Imperial Bulkhead Coupling

    Imperial Bulkhead Coupling

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    £15.00 INC VAT
    £12.50 EXC VAT

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  • REF #1591

    Imperial Equal Elbows

    Imperial Equal Elbows

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    £17.30 INC VAT
    £14.42 EXC VAT

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  • REF #1594

    Imperial Equal Tee

    Imperial Equal Tee

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    £21.56 INC VAT
    £17.97 EXC VAT

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  • REF #4039

    Imperial Equal Ended Cross

    Imperial Equal Ended Cross

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    £21.65 INC VAT
    £18.04 EXC VAT

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  • REF #1580

    Imperial Male Stud Coupling BSPT

    Imperial Male Stud Coupling BSPT

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    £8.81 INC VAT
    £7.34 EXC VAT

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  • REF #1581

    Imperial Male Stud Coupling BSPP

    Imperial Male Stud Coupling BSPP

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    £6.54 INC VAT
    £5.45 EXC VAT

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  • REF #1589

    Imperial Male Stud Elbow

    Imperial Male Stud Elbow

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    £16.31 INC VAT
    £13.59 EXC VAT

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  • REF #1592

    Imperial Male Branch Tee

    Imperial Male Branch Tee

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    £40.75 INC VAT
    £33.96 EXC VAT

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  • REF #1593

    Male Run Tee

    Male Run Tee

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    £15.14 INC VAT
    £12.62 EXC VAT

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  • REF #1582

    Imperial Female Stud Coupling

    Imperial Female Stud Coupling

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    £10.84 INC VAT
    £9.03 EXC VAT

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  • REF #1583

    Imperial Female Pressure Gauge

    Imperial Female Pressure Gauge

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    £22.79 INC VAT
    £18.99 EXC VAT

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  • REF #1573

    Imperial Brass Barrel Olives

    Imperial Brass Barrel Olives

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    £0.82 INC VAT
    £0.68 EXC VAT

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  • REF #1464

    Imperial Compression Olive

    Imperial Compression Olive

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    £0.89 INC VAT
    £0.74 EXC VAT

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Imperial compression fittings are sized to imperial pipe diameters, still common on older UK plumbing and pipework where imperial-sized copper tube was originally installed. Mixing imperial and metric fittings on the same run doesn't work; the olive and nut won't seat correctly even where the outside diameters look close, which is where our Imperial to Metric Coupling earns its place, letting you transition between the two standards without re-piping the whole run.

All our imperial compression fittings are brass, which handles hot and cold water systems without the corrosion risk of lower-grade materials. Olives, the small compression rings that create the seal, are sold separately from the fitting body and should be replaced rather than reused once a joint has been broken.

Check your existing pipe diameter before ordering; imperial and metric sizes are close enough to cause confusion but not close enough to interchange.

Orders over £200 to England and Wales qualify for free delivery.

Frequently Asked Questions

How do I know if my pipework is imperial or metric?

Measure the outside diameter of the pipe. Imperial sizes (such as 1/2 inch) and metric sizes (such as 15mm) are close but not identical, and using the wrong fitting will result in a joint that won't seal properly.

Can I connect imperial pipe to metric pipe?

Yes, using an imperial-to-metric coupling designed for the purpose. Don't try to force a standard imperial or metric fitting onto the wrong pipe size.

Do I need to replace the olive every time I break a joint?

Yes. Once an olive has been compressed to form a seal, it takes the shape of that joint. Reusing it on a reassembled joint is a common cause of leaks.

Do you deliver imperial compression fittings near me?

The Hosemaster delivers to all UK mainland addresses. Orders over £200 to England and Wales qualify for free delivery, with 1–2 day delivery and same-day dispatch on most in-stock lines.