Brass 90° Elbow BSP Threaded Pipe Fitting — Equal & Reducer, 1/8" to 1/2"

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Description

 

Brass 90° Elbow BSP Fittings — Reliable Direction Changes for Threaded Pipe Systems

When a pipe run needs to turn a corner and a leaky joint isn't an option, plumbers, HVAC technicians, and workshop builders reach for a dependable brass 90° elbow BSP fitting. Whether you're routing compressed air lines in a garage, connecting water supply pipes in a tight cabinet, or building a custom hydraulic circuit, the wrong fitting wastes time and causes headaches. These fittings are designed for tradespeople and serious DIYers who need a precise, durable connection the first time.

Each fitting is machined from brass and features BSP (British Standard Pipe) threads. Available in Equal style (same size on both ports) and Reducer style (two different port sizes for stepping up or down in diameter). Thread configurations include MM (male × male), FF (female × female), and FM (female × male). Sizes range from 1/8" (≈3.2mm nominal) up to 1/2" (≈12.7mm nominal), covering the most common BSP pipe sizes used in plumbing, pneumatics, and fluid systems. Sold in packs of 1, 2, 5, or 10 pieces to match your project scale.

Typical applications include 90° direction changes in compressed air distribution lines, hot and cold water supply connections behind walls or under sinks, and hydraulic or pneumatic control circuits where space-saving right-angle routing is needed. The compact elbow profile makes these fittings well suited for tight-clearance installations where a straight connector simply won't fit.

🔵 Compatibility Note: These fittings use BSP (British Standard Pipe) threads — BSPP (parallel) style. They are not directly interchangeable with NPT (National Pipe Taper) threads. Verify your existing fittings are BSP before ordering. If unsure, contact us to confirm.

✅ Key Features of These Brass 90° BSP Elbow Fittings

  • 🔩BSP Threaded Connections — Machined to BSP (British Standard Pipe) thread form for reliable engagement with standard BSP pipe fittings, valves, and manifolds used in plumbing and pneumatic systems.
  • ↩️True 90° Right-Angle Turn — The elbow geometry delivers a precise right-angle direction change, making it straightforward to route pipe runs around corners, through panels, or into tight enclosures.
  • ⚙️Equal & Reducer Configurations — Choose Equal (same port size on both ends) for straight-through direction changes, or Reducer (two different port sizes) to step down or up in pipe diameter within a single fitting.
  • 🔀MM, FF, and FM Thread Options — Available in male × male, female × female, and female × male combinations so you can match the fitting to your existing threaded components without needing extra adapters.
  • 🛡️Brass Construction — Brass offers inherent corrosion resistance and machinability, making it a widely used material for water, air, and light hydraulic fittings in both indoor and outdoor installations.
  • 📦Flexible Pack Quantities — Order 1, 2, 5, or 10 pieces per variant to suit single repairs, small installations, or workshop stock — reducing waste and letting you buy exactly what you need for the job.

📐 Technical Specifications — Brass 90° BSP Elbow Pipe Fittings

Fitting Type 90° Elbow (Right Angle)
Thread Standard BSP (British Standard Pipe)
Thread Style BSPP (Parallel)
Material Brass
Available Types Equal, Reducer
Thread Configurations MM (Male × Male), FF (Female × Female), FM (Female × Male)
Available Sizes 1/8", 1/4", 3/8", 1/2" BSP (Equal); Reducer combinations from 1/8" up to 1/2"
Pack Quantities 1 pc, 2 pcs, 5 pcs, 10 pcs
Finish See variant options
Max Working Pressure Contact us to confirm for your specific application
Suitable Media Water, compressed air, light hydraulic fluids (contact us to confirm for specific media)
Country of Origin See variant options
⚠️ Spec Confirmation: Exact pressure ratings and temperature limits vary by size and application. If you are installing these fittings in a pressurized or safety-critical system, please contact us before ordering to confirm suitability.

❓ Frequently Asked Questions

How do I choose the right size BSP elbow fitting?

Measure the outer diameter of your pipe threads and match to the BSP nominal size. As a general guide: 1/8" BSP is typically used on small instrument and gauge lines, 1/4" on compressed air and hydraulic branch lines, 3/8" on medium-flow water and air systems, and 1/2" on higher-flow plumbing and heating circuits. For reducer elbows, the larger port connects to the main line and the smaller port to the branch. If you're unsure, measure your existing fitting threads and compare to a BSP thread chart.

What is the difference between Equal and Reducer elbow types?

An Equal elbow has the same thread size on both ports (e.g., 1/4" × 1/4"), allowing a 90° direction change without altering pipe diameter. A Reducer elbow has two different thread sizes (e.g., 1/4" × 1/8"), letting you change both direction and pipe size in a single fitting — useful when stepping down to a smaller branch line or instrument port.

What do MM, FF, and FM mean for these fittings?

MM means both ports have Male (external) BSP threads. FF means both ports have Female (internal) BSP threads. FM means one port is Female and the other is Male — useful when connecting to a mix of male and female threaded components without needing a separate adapter. Check the thread type on your existing pipe or valve before selecting.

Are these fittings suitable for outdoor or pressurized use?

Brass generally offers good corrosion resistance and is widely used in outdoor plumbing, compressed air, and light hydraulic applications. For a leak-free seal, apply PTFE thread tape or pipe sealant to male threads before assembly. Exact pressure and temperature ratings depend on the specific size and application — contact us to confirm suitability for your system before installation in safety-critical or high-pressure circuits.

Are BSP threads compatible with NPT fittings?

BSP (British Standard Pipe) and NPT (National Pipe Taper) threads are not directly interchangeable. While some nominal sizes are close in diameter, the thread angle differs — 55° for BSP versus 60° for NPT — which can cause leaks or cross-threading if mixed. Use a dedicated BSP-to-NPT adapter if you need to connect the two thread standards in the same system.

How many fittings should I order for my project?

Each variant is available in packs of 1, 2, 5, or 10 pieces. For a single repair or prototype build, 1–2 pcs is typically sufficient. For a full installation or to keep workshop stock on hand, the 5- or 10-pack generally offers better value per fitting. We recommend ordering one or two extra for any project where access is difficult after installation.

What tools do I need to install these elbow fittings?

An adjustable wrench or appropriately sized open-end wrench is generally sufficient. Apply PTFE tape to male threads before assembly — wrap 2–3 times in the direction of the thread. Avoid over-tightening, which can crack brass fittings: hand-tight plus approximately 1–2 turns with a wrench is typically adequate for a leak-free seal on most BSP connections.

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