1 8" BSP Brass Reducing Fittings Female To Male Thread Connector Adaptor Coupler

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1 8" BSP Brass Reducing Fittings Female To Male Thread Connector Adaptor Coupler

Name: 1 8" BSP Brass Reducing Fittings Female To Male Thread Connector Adaptor Coupler
Brand: HomeDIYer
Price: 6.46 USD
Availability: InStock

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Reducing Bush: M3&4”To F1&2”58g

Quantity（PCS): 1PCS

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$6.46 USD

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In stock (500 units), ready to be shipped

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BSP Brass Reducing Fittings — Connect Different Thread Sizes Without Leaks

When a plumbing run, hydraulic circuit, or compressed-air system calls for two pipes of different diameters, finding a reliable adapter that holds pressure without weeping is the real challenge. DIYers and trade professionals alike need BSP brass reducing fittings that thread on cleanly, seat without tape-stacking, and stay tight through thermal cycling and vibration.

These brass reducing bush fittings are machined from solid brass bar stock and cover 23 size combinations spanning 1/8" BSP through 3/4" BSP (approximately 9.7 mm–26.4 mm nominal bore). Each piece is available in female-to-male, male-to-female, and same-size configurations, with individual weights ranging from 7 g (1/8" × 1/8") to 80 g (1" × 1") depending on the selected variant. Order in quantities of 1, 2, 3, 5, 8, 10, or 20 pieces to match your project scope.

Typical applications include connecting BSP reducing bush fittings in domestic hot-and-cold plumbing manifolds, adapting hydraulic hose ports on machinery, stepping down compressed-air branch lines, and joining gas-line fittings where a reducing coupler is required by the installation layout.

🔧 Thread Standard: British Standard Pipe (BSP) — compatible with BSPP (parallel) fittings. Verify your existing fittings are BSP before ordering. Not compatible with NPT or metric threads without an additional adapter.

✅ Key Features of These BSP Brass Reducing Fittings

23 Size Combinations — From 1/8" × 1/8" up to 3/4" × 3/4" BSP, covering the most common reducing steps in residential and light-industrial plumbing.
Solid Brass Construction — Machined from brass bar stock for corrosion resistance in water, air, and low-pressure gas service; suitable for both hot and cold media.
Precise Thread Form — BSP parallel threads are cut to standard tolerances, allowing a reliable seal with PTFE tape or thread sealant compound without cross-threading risk.
Compact Hex-Body Profile — The hexagonal body accepts a standard open-end or adjustable wrench for controlled torque without slipping or rounding.
Flexible Quantity Options — Available in packs of 1, 2, 3, 5, 8, 10, or 20 pieces so you can stock exactly what a single repair or a full installation run requires.
Wide Application Range — Suited for potable water, compressed air, hydraulic oil, and low-pressure gas lines where BSP thread reducing connectors are specified.

📐 Technical Specifications — BSP Brass Reducing Bush Fittings

Thread Standard	BSP (British Standard Pipe) Parallel
Material	Brass
Size Range	1/8" BSP to 3/4" BSP (see variant options)
Configuration	Female-to-Male, Male-to-Female (see variant options)
Weight per Piece	7 g – 80 g (varies by size; shown in variant name)
Available Quantities	1, 2, 3, 5, 8, 10, 20 PCS
Finish	Natural brass
Sealing Method	PTFE tape or thread sealant compound (not included)
Recommended Torque	See variant options / Contact us to confirm
Max Working Pressure	See variant options / Contact us to confirm
Media Compatibility	Water, compressed air, hydraulic oil, low-pressure gas

❓ Frequently Asked Questions

How do I choose the correct reducing bush size?

Identify the thread size on both the male and female ports you need to connect. BSP sizes are measured by nominal bore, not the outer diameter of the thread — a 1/2" BSP fitting has an outer thread diameter of approximately 20.9 mm. Use a thread gauge or compare against a known fitting. The variant name lists the female (F) size first and the male (M) size second, e.g. "F1/2" To M1/4"" means a 1/2" female inlet reducing to a 1/4" male outlet.

Are these fittings compatible with NPT threads?

No. BSP and NPT threads have different thread angles (55° vs 60°) and pitch specifications. They are not interchangeable. If your existing pipework uses NPT threads, you will need a dedicated BSP-to-NPT adapter rather than a BSP reducing bush.

What sealant should I use with these brass reducing fittings?

BSPP (parallel) threads rely on a face seal or thread sealant rather than a taper for pressure-tightness. Apply two to three wraps of PTFE tape in the direction of the thread, or use a thread sealant compound rated for your media (water, gas, or oil). Do not over-tighten — brass threads can strip if excessive torque is applied.

Can these fittings be used on gas lines?

Brass BSP fittings are commonly used in low-pressure gas installations. However, gas line work is subject to local codes and regulations. Always verify that the fitting's pressure rating meets your system requirements and that installation is carried out by a qualified professional where required by law.

How corrosion-resistant is brass in plumbing applications?

Brass offers good resistance to corrosion from water and air in typical plumbing conditions. It is not recommended for highly acidic or alkaline media, or for direct burial in aggressive soils without additional protection. For potable water applications, confirm that the alloy meets your local drinking-water standards.

Why does the variant name include a weight (e.g., "58g")?

The weight shown in the variant name (e.g., "M3/4" To F1/2" 58g") is the approximate weight of a single piece in that size. This helps you estimate shipping weight when ordering in bulk and confirms you have selected the correct physical size before adding to cart.

Can I return or exchange if I order the wrong size?

Please double-check your thread sizes before ordering, as fittings are precision-machined components. For return or exchange enquiries, contact our support team through the store's contact page and we will assist you according to our returns policy.

🛒 Select your Reducing Bush size and Quantity above, then add to cart.

1 8" BSP Brass Reducing Fittings Female To Male Thread Connector Adaptor Coupler

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Description

BSP Brass Reducing Fittings — Connect Different Thread Sizes Without Leaks

✅ Key Features of These BSP Brass Reducing Fittings

📐 Technical Specifications — BSP Brass Reducing Bush Fittings

❓ Frequently Asked Questions

1 8" BSP Brass Reducing Fittings Female To Male Thread Connector Adaptor Coupler

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