Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2
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Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2

Stainless Steel Reducing Bush BSPT 1/8" to 2" — Male/Female Thread Pipe Fitting A2

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By HomeDIYer®

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$11.76 USD
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In stock (500 units), ready to be shipped

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Description

 

BSPT Stainless Steel Reducing Bush — Connect Different Pipe Sizes Without Adapters

Plumbers, pipefitters, and DIY homeowners often run into the same frustrating problem: two pipes of different diameters that need to connect cleanly and securely. Mismatched thread sizes can cause leaks, wasted time, and costly rework. These stainless steel BSPT reducing bushes solve that problem directly — providing a reliable, single-piece transition between two different BSP pipe sizes without the need for additional adapters or couplings.

Each fitting is a single-piece reducing bush machined from 304 stainless steel (A2 grade), featuring a larger female BSPT thread on the outside and a smaller male BSPT thread on the inner boss. Available in a wide range of size combinations from 1/8" (DN6) up to 2" (DN50) on the female end, with male ends ranging from 1/8" to 1-1/2". The hex body allows for easy wrench installation. Sold individually (1 pc per order) — select your required size combination from the variant options above.

These BSPT reducing bushes are well-suited for residential and commercial plumbing systems where pipe diameters change between sections, for compressed air and gas line installations requiring a step-down connection, and for industrial fluid handling equipment where stainless steel corrosion resistance is required. Common applications include water supply lines, irrigation manifolds, pneumatic systems, and light chemical transfer lines.

🔗 Thread Compatibility: BSPT (British Standard Pipe Taper) threads only. Not compatible with NPT, BSP parallel (BSPP/G), or metric threads. Confirm your existing fittings are BSPT before ordering.
⚠️ Size Selection: The first size listed is the female (larger) end; the second is the male (smaller) end. Example: "1/2" Female – 1/4" Male" means the bush screws into a 1/2" BSP socket and accepts a 1/4" BSP male fitting.

✅ Key Features of These BSPT Stainless Steel Reducing Bushes

  • 🔩Tapered BSPT Thread Design — Both ends feature precision-cut BSPT taper threads for a self-sealing fit when used with PTFE tape, reducing the risk of leaks in pressurized pipe systems.
  • 🦾304 Stainless Steel (A2 Grade) — Machined from A2-grade 304 stainless steel, these reducing bushes resist rust and oxidation in water, air, and mild chemical environments — a step up from brass or carbon steel alternatives.
  • 📐Hex Body for Wrench Grip — The external hex profile allows a standard pipe wrench or open-end wrench to apply proper torque during installation, reducing the chance of cross-threading or under-tightening.
  • 📏Wide Size Range — Available in 23 size combinations covering female ends from 1/8" (DN6) to 2" (DN50), making these fittings suitable for a broad range of BSP pipe reducing applications in one product line.
  • 🏗️Single-Piece Construction — Unlike two-piece adapters, the one-piece bush design eliminates an extra joint, reducing potential leak points and simplifying installation in tight spaces.
  • 🌊Suitable for Wet & Outdoor Use — 304 stainless steel provides corrosion resistance in outdoor plumbing, irrigation systems, and damp industrial environments where carbon steel fittings would corrode over time.

📐 Technical Specifications — BSPT Reducing Bush Pipe Fittings

Product Type Reducing Bush (Hex Pattern)
Thread Standard BSPT (British Standard Pipe Taper)
Material 304 Stainless Steel (A2 Grade)
Finish Natural / Brushed Stainless
Female End Size Range 1/8" (DN6) to 2" (DN50)
Male End Size Range 1/8" (DN6) to 1-1/2" (DN40)
Available Size Combinations See variant options above
Body Style Hex (wrench-flat exterior)
Quantity per Order 1 piece
Pressure Rating Contact us to confirm for your application
Temperature Range Contact us to confirm for your application
Suitable Media Water, air, gas, mild chemicals (confirm for specific media)
Country of Origin Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right reducing bush size?

Match the larger (female) end to your existing pipe thread and the smaller (male) end to the fitting or pipe you want to connect. For example, if your pipe is 1/2" BSP and you need to connect a 1/4" fitting, select the 1/2" Female – 1/4" Male variant. Always verify thread type (BSPT) before ordering. BSP sizes refer to the nominal bore, not the actual thread diameter — e.g., a 1/2" BSP thread has an actual OD of approximately 20.9mm (≈0.82").

What material is this reducing bush made from?

These reducing bushes are made from 304 stainless steel (A2 grade), which generally offers good corrosion resistance for most plumbing, gas, and light industrial applications. A2 stainless is the most widely used grade for pipe fittings in non-marine environments.

Can this fitting be used outdoors or in wet environments?

Yes. 304 stainless steel (A2) is typically suitable for outdoor and wet environments, including garden irrigation, outdoor water supply lines, and exposed pipework. For highly corrosive or marine/coastal environments where chloride exposure is high, 316 stainless steel (A4 grade) is generally recommended instead.

Is BSPT the same as NPT?

No — BSPT and NPT are not interchangeable. BSPT (British Standard Pipe Taper) uses a 55° thread angle, while NPT (National Pipe Taper) uses a 60° thread angle. They also have different thread pitches. Attempting to mix them can result in cross-threading or leaks. Always confirm your existing fittings use BSPT threads before purchasing. If your system uses NPT, you will need NPT-specific fittings.

What is the pressure rating of these reducing bushes?

Pressure ratings vary by size and application. Generally, stainless steel BSPT reducing bushes in these sizes are suitable for moderate-pressure plumbing and gas lines. Larger sizes typically have lower pressure ratings than smaller sizes. Contact us to confirm suitability for your specific pressure requirements before use in high-pressure systems.

Do I need thread sealant with this fitting?

Yes. BSPT tapered threads typically require PTFE tape (plumber's tape) or a suitable thread sealant compound to achieve a leak-free seal. Apply sealant to the male threads before assembly. Do not over-tighten — hand-tight plus 1–2 turns with a wrench is generally sufficient for most sizes.

What size wrench do I need to install this fitting?

The required wrench size depends on the variant selected. Smaller sizes (1/8" to 1/2") typically fit standard open-end wrenches. Larger sizes (3/4" to 2") generally require a pipe wrench or large adjustable wrench. See variant options for the specific hex dimensions, or contact us to confirm the hex flat size for your chosen variant.

🛒 Select your size combination above, then add to cart — ships from our US warehouse.

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