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Fittings & Couplers

The Hosemaster stocks pipe fittings, hose adaptors, and couplers for plumbing, compressed air, industrial, and agricultural applications. The range covers BSP threaded fittings, push-fit connectors, compression fittings, quick-release couplers, and barbed adaptors in aluminium, brass, stainless steel, and polypropylene.

Not sure which fitting you need? The guide below identifies the right connector for your application, or browse by sub-category.

  • M10 Back Plate - Galvanised

    M10 Back Plate - Galvanised

    £2.94 INC VAT
    £2.45 EXC VAT

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  • REF #1314

    Straight Hose Male Adaptor

    Straight Hose Male Adaptor

    From
    £2.12 INC VAT
    £1.77 EXC VAT

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  • REF #2614

    Imperial Annealed Copper Tubing

    Imperial Annealed Copper Tubing

    From
    £4.85 INC VAT
    £4.04 EXC VAT

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  • REF #2614

    Metric Annealed Copper Tubing

    Metric Annealed Copper Tubing

    From
    £3.95 INC VAT
    £3.29 EXC VAT

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Types of hose fittings and connectors

BSP threaded fittings screw onto a parallel (BSPP) or tapered (BSPT) threaded port. BSP is the UK standard thread form for plumbing, pneumatic, and hydraulic connections. Use our BSP pipe thread reference page to identify thread sizes from physical measurements.

Push-fit connectors grip the tube or hose internally when pushed in, and release with a collar press. No tools required. Used widely in pneumatic tubing, compressed air circuits, and instrumentation.

Compression fittings seal by compressing a ferrule onto the tube as a nut is tightened. Used in copper and plastic plumbing, hydraulic control lines, and instrumentation work.

Barbed hosetail fittings have a ridged barb that inserts into the hose bore and is secured with a jubilee clip or ear clamp. Simple, widely used, and available in a very wide range of bore sizes. Suited to garden hose, industrial hose, water transfer, and low-pressure air.

Quick-release couplers allow a hose to be connected and disconnected without tools via a push-button or lever mechanism. Different coupling series (BSP, Euro, Milton) are not interchangeable — both halves must be from the same series.

Camlock fittings use a cam-and-groove mechanism locked by two cam arms. Fast to connect for large-bore transfer in agriculture, chemical transfer, fuel delivery, and industrial bulk fluid applications.

For a full reference table of fitting types, applications, and compatibility, see our hose fittings guide.

Which material do I need?

Brass is suitable for most water, air, and general hydraulic applications. It is not suitable for acetylene, ammonia, or prolonged seawater contact, use stainless steel for those applications.

Stainless steel (304 or 316) is the right choice for marine, coastal, food-grade, outdoor, and chemically aggressive applications. 316 grade adds chloride resistance for saltwater and harsh cleaning chemical environments.

Aluminium is lightweight and well suited to compressed air and automotive applications but is not appropriate for acidic or alkaline media or saltwater exposure.

Polypropylene suits low-pressure water, irrigation, and chemical transfer where metal fittings are unsuitable. Not for high pressure, high temperature, or fuel and solvent contact.

For a full material comparison table, see our hose fittings guide.

Need to identify or measure a BSP thread size? Our BSP pipe thread reference page has full dimension tables, a size calculator, and a guide to identifying BSPP vs BSPT threads.

Frequently Asked Questions

What is a hose connector?

A hose connector is a fitting that joins two lengths of hose, connects a hose to a pipe or tap, or adapts between different thread types or bore sizes. The term covers barbed hosetails, BSP threaded fittings, push-fit connectors, quick-release couplers, and compression fittings. The right type depends on hose bore, operating pressure, media being transferred, and the thread or connection standard on the equipment.

What is the difference between a hose adaptor and a hose coupler?

A hose adaptor changes between two different connection types, for example, converting a male BSP thread to a barbed hosetail, or bridging between metric and imperial thread forms. A coupler connects two hose ends of the same type. In practice the terms are used loosely and the distinction matters less than choosing the correct bore, thread type, and material for the application.

How do I know which size hose fitting I need?

Match the fitting bore to the internal diameter of the hose. For threaded connections, identify the thread form (BSP is standard in the UK) and thread size. A thread measuring 13.2 mm across the outside is 1/4 inch BSP; 20.9 mm is 1/2 inch BSP. See our BSP pipe thread reference page for full dimension tables.

Can I use brass fittings with all types of hose?

Brass fittings suit most water, air, and hydraulic applications. They are not suitable for acetylene (explosion risk), ammonia (stress corrosion cracking), or seawater in prolonged contact (dezincification). For these applications, use stainless steel. Check compliance certifications before using brass fittings in potable water or food contact applications.

What is a quick-release coupler and how does it work?

A quick-release coupler allows a hose to be connected and disconnected without tools. One half (the plug) fits the hose end; the other (the socket) fits the equipment or supply point. Pressing the collar on the socket releases the plug. Different coupling series such as BSP, Euro, and Milton are not generally interchangeable — both halves must be from the same series.

Do you supply hose fittings near me?

The Hosemaster delivers hose fittings, adaptors, and couplers to all UK mainland addresses. Orders over £200 qualify for free delivery to England and Wales, with 1-2 day dispatch on stocked items.