image

Brass

Brass hose fittings for pneumatic, hydraulic and general fluid transfer systems. The range covers hex nipples, reducers, elbows, tees, unions and adaptors in BSPP and BSPT thread forms across a range of sizes. Brass is the default material for most general-purpose hose fittings in the UK market: it machines cleanly, threads reliably, and holds up well to water, air and most light chemicals. It is not suitable for acetylene or some corrosive environments.

All fittings in this range use British Standard Pipe (BSP) thread forms. Male fittings thread into female ports; BSPP (parallel) threads need an O-ring or bonded seal to seal the joint, while BSPT (tapered) threads seal on the taper itself, typically with PTFE tape. Confirm the thread form used by your equipment before ordering.

  • REF #1255

    Type C - Hose Tail Lever - Brass Cam & Groove

    Type C - Hose Tail Lever - Brass Cam & Groove

    From
    £32.29 INC VAT
    £26.91 EXC VAT

    View Product

  • REF #1253

    Type B - Male Lever Coupling - Brass Cam & Groove

    Type B - Male Lever Coupling - Brass Cam & Groove

    From
    £31.10 INC VAT
    £25.92 EXC VAT

    View Product

  • REF #1257

    Type A - Female Plug - Brass Cam & Groove

    Type A - Female Plug - Brass Cam & Groove

    From
    £15.48 INC VAT
    £12.90 EXC VAT

    View Product

  • REF #1260

    Type DP - Dust Plug - Brass Cam & Groove

    Type DP - Dust Plug - Brass Cam & Groove

    From
    £8.94 INC VAT
    £7.45 EXC VAT

    View Product

  • REF #1256

    Type F - Male Plug - Brass Cam & Groove

    Type F - Male Plug - Brass Cam & Groove

    From
    £18.02 INC VAT
    £15.02 EXC VAT

    View Product

  • REF #1258

    Type E - Hose Tail - Brass Cam & Groove

    Type E - Hose Tail - Brass Cam & Groove

    From
    £18.31 INC VAT
    £15.26 EXC VAT

    View Product

  • REF #1259

    Type DC - Lever Stop - Brass Cam & Groove

    Type DC - Lever Stop - Brass Cam & Groove

    From
    £27.56 INC VAT
    £22.97 EXC VAT

    View Product

  • REF #1254

    Type D - Female Lever Coupling - Brass Cam & Groove

    Type D - Female Lever Coupling - Brass Cam & Groove

    From
    £32.72 INC VAT
    £27.27 EXC VAT

    View Product

What to know about brass hose fittings

Brass is the standard material for hose fittings in UK pneumatic, hydraulic and general plumbing applications. It machines to tight tolerances, forms a reliable thread, and has good resistance to water, air and most industrial fluids. That covers most applications in a typical workshop or plant environment, but there are limits worth knowing.

Thread form is where most ordering errors happen. BSP (British Standard Pipe) is the standard in the UK, but it comes in two variants. BSPP (parallel, also called G thread) uses a straight thread that does not seal on the thread itself; it requires an O-ring face seal or bonded seal to close the joint. BSPT (tapered) uses a thread that tightens progressively as it is wound in, sealing on the taper with PTFE tape. The two are not interchangeable. Check which your equipment uses before ordering.

Size designation in BSP follows the pipe bore, not the fitting OD. A 1/4 BSP fitting is not 6.35mm across the thread: it is the thread size associated with a 1/4-inch nominal bore pipe. This catches out buyers used to metric measurement. If in doubt, measure the thread OD and check it against a BSP thread chart.

Brass is not suitable for acetylene gas lines or for contact with certain aggressive chemicals, particularly ammonia-based fluids. In those applications, use stainless steel or specialist material fittings rated for the specific fluid.

Frequently Asked Questions

What are brass hose fittings used for?

Brass hose fittings are used in pneumatic, hydraulic, water supply and general fluid transfer systems. Common applications include air line connections, water plumbing, low-pressure hydraulics and general industrial pipework. Brass is the default choice for most general-purpose fittings in UK industry due to its machinability, thread reliability and resistance to water and air.

What thread type do brass hose fittings use?

The fittings in this range use BSP (British Standard Pipe) threads, which is the standard in UK pneumatic and plumbing systems. BSP comes in two variants: BSPP (parallel, also called G thread) and BSPT (tapered). Confirm which thread type your equipment uses before ordering, as the two are not interchangeable.

Can brass fittings be used for gas or fuel?

Brass is widely used in low-pressure natural gas and LPG pipework, but confirm that any fitting is rated and certified for gas use in your specific application. For fuel lines in automotive or industrial settings, check the fitting material compatibility with the fuel type and operating pressure. Brass is not suitable for acetylene lines.

What is the difference between BSPP and BSPT fittings?

BSPP (parallel) has a straight thread that does not seal on the thread itself; it requires a bonded seal, O-ring face seal or flat washer to close the joint. BSPT (tapered) has a thread that tightens progressively as it is wound in and seals on the taper, typically with PTFE tape. The two are not physically interchangeable in the same port.

Do brass fittings need sealing?

BSPT (tapered) fittings seal on the thread taper using PTFE tape wound around the male thread. BSPP (parallel) fittings require a separate face seal: either a bonded seal washer, an O-ring, or a flat fibre washer depending on the port type. Using a BSPP fitting without an appropriate seal will result in a leak.