image

Bushes, Unions and Bulkhead

An extensive variety of bushes, unions and locknuts available in many BSP and metric thread sizes. These hose fittings are available in stainless, brass and galvanised steel.

Our range of bushes, bulkheads, unions and locknuts includes options in all main British Standard Pipe (BSP) and metric thread sizes across a range of materials including brass, stainless steel, galvanised steel and nickel plated brass.

Shop locknuts, bushes, bulkhead connectors and unions at The Hosemaster today.

  • REF #1368

    Male BSPP x Female BSPP Bush - Nickel Plated

    Male BSPP x Female BSPP Bush - Nickel Plated

    From
    £1.80 INC VAT
    £1.50 EXC VAT

    View Product

  • REF #7164

    TEFEN Nylon Bushes

    TEFEN Nylon Bushes

    From
    £3.17 INC VAT
    £2.64 EXC VAT

    View Product

  • REF #1414

    BSPP Female Flanged Back Nut

    BSPP Female Flanged Back Nut

    From
    £2.52 INC VAT
    £2.10 EXC VAT

    View Product

  • REF #1412

    Female Locknut

    Female Locknut

    From
    £1.92 INC VAT
    £1.60 EXC VAT

    View Product

  • REF #1411

    BSPP Female Locknut - Nickel Plated

    BSPP Female Locknut - Nickel Plated

    From
    £1.75 INC VAT
    £1.46 EXC VAT

    View Product

  • REF #1410

    Female BSPP Brass Locknut

    Female BSPP Brass Locknut

    From
    £1.27 INC VAT
    £1.06 EXC VAT

    View Product

  • REF #1379

    Female Breakable Joint

    Female Breakable Joint

    From
    £45.02 INC VAT
    £37.52 EXC VAT

    View Product

  • REF #1350

    Male BSPP Bulkhead Connector

    Male BSPP Bulkhead Connector

    From
    £5.75 INC VAT
    £4.79 EXC VAT

    View Product

  • REF #1373

    Male Metric / BSPP Female Bulkhead Connector - Nickel Plated

    Male Metric / BSPP Female Bulkhead Connector - Nickel Plated

    From
    £3.20 INC VAT
    £2.67 EXC VAT

    View Product

  • REF #1370

    Male Metric x Female Metric / BSPP Bush

    Male Metric x Female Metric / BSPP Bush

    From
    £5.10 INC VAT
    £4.25 EXC VAT

    View Product

  • REF #1373

    Male Metric / BSPP Female Bulkhead Connector

    Male Metric / BSPP Female Bulkhead Connector

    From
    £4.97 INC VAT
    £4.14 EXC VAT

    View Product

  • REF #1371

    Male BSPP x Female BSPP Bush - Shoulderless

    Male BSPP x Female BSPP Bush - Shoulderless

    From
    £2.33 INC VAT
    £1.94 EXC VAT

    View Product

  • REF #1367

    Male BSPP x Female BSPP Bush

    Male BSPP x Female BSPP Bush

    From
    £2.66 INC VAT
    £2.22 EXC VAT

    View Product

  • REF #1366

    Male BSPT x Female BSPP Bush - Nickel Plated

    Male BSPT x Female BSPP Bush - Nickel Plated

    From
    £0.70 INC VAT
    £0.58 EXC VAT

    View Product

  • REF #1365

    Male BSPT x Female BSPP Bush

    Male BSPT x Female BSPP Bush

    From
    £1.40 INC VAT
    £1.17 EXC VAT

    View Product

  • REF #4586

    BSPP Lock Nut / Back Nut - Galvanised

    BSPP Lock Nut / Back Nut - Galvanised

    From
    £1.92 INC VAT
    £1.60 EXC VAT

    View Product

Showing 16 of 23 products

Load more

Pipe bushes, unions and bulkhead fittings

These three fitting types handle different connection problems, but they share a common purpose: adapting or transitioning between thread sizes, pipe ends, or panel penetrations without compromising the integrity of the system.

A bush reduces a larger thread to a smaller one — useful when a port or body is tapped to one size and your line runs in another. Unions allow you to disconnect a pipeline without disturbing either end, which is important on systems that need periodic maintenance or replacement. Bulkhead fittings create a leak-free penetration through a panel or enclosure wall, with a nut and seal holding the fitting in place on each side.

All fittings here are available in brass as standard, with steel options across selected sizes. Thread forms cover BSP and metric to suit both UK-standard and European equipment.

If you need to adapt between thread forms — BSP to metric, for example — the adaptors range covers that. For sealing compound and PTFE tape to complete the installation, those are in the tools and accessories section.

Frequently Asked Questions

What is a pipe bush used for?

A pipe bush reduces a larger threaded port to a smaller thread size. It threads into the larger port and provides a smaller female or male thread on the other side. They are commonly used where a fitting or valve body is tapped larger than the pipe or hose you are connecting.

What is the difference between a union and a coupler?

A union connects two pipe ends and can be disconnected and reconnected without disturbing either pipe. It uses a nut in the centre to compress both ends together. A coupler typically refers to a push-fit or quick-release connection. Unions are the right choice where you need periodic access for maintenance or replacement.

What is a bulkhead fitting?

A bulkhead fitting passes through a hole in a panel or tank wall and creates a sealed connection on both sides. A nut on the back of the panel locks the fitting in place. They are used wherever a pipe or hose needs to penetrate an enclosure, tank, or cabinet.

Do you stock bulkhead fittings for delivery near me?

Yes. We deliver across England and Wales with free delivery on orders over £200. Most orders dispatched the same day for next-day arrival.