Stainless Steel 45° Elbow BSP Female Threaded Pipe Fitting — 304 SS, 1/8" to 2" (DN6–DN50)

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45° BSP Female Elbow Pipe Fitting in 304 Stainless Steel — Reliable Direction Changes for Plumbing & Industrial Systems

When a straight pipe run needs to change direction without sacrificing flow efficiency or joint integrity, a poorly matched elbow fitting becomes the weakest point in the entire system. Whether you're a plumber routing water lines around structural obstacles, a fabricator building a compressed-air manifold, or a DIYer upgrading a home gas or irrigation system, you need a 45° elbow that threads on cleanly, seals reliably, and holds up over years of service.

Each fitting is machined from 304 stainless steel and features equal female BSP (British Standard Pipe) threads on both ends, allowing a smooth 45° change of direction in a single compact body. Available in nine BSP sizes from 1/8" BSP (DN6) to 2" BSP (DN50), sold individually (1 pcs per order). The 45° angle — compared to a 90° elbow — reduces turbulence and pressure drop, making it the preferred choice for flow-sensitive applications.

Typical use cases include residential and commercial plumbing reroutes, stainless steel compressed-air distribution lines, food-grade fluid handling systems requiring corrosion-resistant fittings, and outdoor irrigation or garden water supply connections where a 45-degree BSP female pipe elbow provides a cleaner routing angle than a sharp 90° turn.

🔗 Compatibility: Designed for BSP (British Standard Pipe) threaded systems — BSPP or BSPT. Not compatible with NPT (National Pipe Thread) without an adapter. Confirm your existing pipe thread standard before ordering.

✅ Key Features of These 45° BSP Female Stainless Steel Pipe Elbows

  • 🔩 Equal Female BSP Threads on Both Ends — Identical thread size inlet and outlet simplifies installation; no reducers needed when connecting same-diameter pipe runs.
  • 📐 45° Offset Angle for Reduced Pressure Drop — The shallower bend angle minimizes turbulence compared to 90° elbows, making these fittings well-suited for flow-sensitive plumbing and compressed-air lines.
  • 🛡️ 304 Stainless Steel Construction — Resists rust, oxidation, and mild chemical exposure; suitable for water, gas, and light industrial fluid systems in both indoor and outdoor environments.
  • 📏 Wide Size Range: DN6 to DN50 — Nine BSP sizes from 1/8" to 2" cover the majority of residential and light commercial pipe fitting applications in a single product line.
  • ⚙️ Machined Thread Engagement — Precisely cut BSP threads provide consistent torque and a reliable seal when used with PTFE tape or thread sealant compound, reducing the risk of cross-threading or joint failure.
  • 🚿 Versatile Across Multiple Applications — Suitable for potable water, irrigation, compressed air, natural gas (verify local codes), and food-grade fluid handling where a corrosion-resistant 45-degree pipe elbow fitting is required.

📐 Technical Specifications — 45° Equal BSP Female Elbow Pipe Fitting

Product Type 45° Equal Elbow, Female Threaded Both Ends
Thread Standard BSP (British Standard Pipe) — Female
Thread Angle 55°
Elbow Angle 45°
Material 304 Stainless Steel (18/8)
Available Sizes 1/8" BSP (DN6), 1/4" BSP (DN8), 3/8" BSP (DN10), 1/2" BSP (DN15), 3/4" BSP (DN20), 1" BSP (DN25), 1-1/4" BSP (DN32), 1-1/2" BSP (DN40), 2" BSP (DN50)
Nominal Bore Range DN6 – DN50 (6mm – 50mm nominal)
Working Pressure Typically up to 150 PSI (≈10 bar) — see variant or contact us to confirm
Temperature Range Generally suitable for -20°C to 200°C (-4°F to 392°F) — contact us to confirm for steam applications
Surface Finish Polished / Satin Stainless
Sold As 1 piece per order (single fitting)
Sealant Required Yes — PTFE tape or thread sealant compound recommended
Country of Origin See variant options
⚠️ Heads up: BSP and NPT threads are not interchangeable. If your existing system uses NPT fittings, a BSP-to-NPT adapter is required. Not sure? Check your pipe's thread standard before ordering, or contact us.

❓ Frequently Asked Questions

How do I choose the right BSP size for my pipe fitting?

BSP sizes refer to the nominal bore of the pipe, not the actual thread outer diameter. Match the size to your existing pipe's nominal bore — for example, 1/2" BSP (DN15) fits pipes with a nominal bore of approximately 15mm (≈0.59"). Measure your existing fitting's thread OD and cross-reference a BSP thread chart to confirm. When in doubt, size up and use a reducer.

What pressure rating can these 45° elbows handle?

304 stainless steel BSP fittings generally support working pressures up to 150 PSI (approximately 10 bar) for standard water and gas applications. The exact rating depends on pipe wall thickness, temperature, and installation specifics. For high-pressure or steam systems, please contact us to confirm suitability before ordering.

Are these fittings suitable for outdoor or marine environments?

304 stainless steel offers good corrosion resistance for most outdoor environments, including freshwater, mild chemical exposure, and general outdoor plumbing. For coastal or marine environments with high chloride exposure, 316 stainless steel is typically recommended. Contact us if you need marine-grade fittings.

Are these BSP fittings compatible with NPT connections?

No — BSP and NPT threads are not directly interchangeable. BSP uses a 55° thread angle while NPT uses 60°, and thread pitches differ between standards. A BSP-to-NPT adapter is required to connect to NPT-threaded components. These fittings are designed for BSP-threaded systems only.

Do I need thread sealant with these fittings?

Yes. BSPP (parallel) threads require a sealant such as PTFE tape or thread sealant compound to achieve a leak-free joint, as the seal is made at the mating face rather than the thread taper. Apply 2–3 wraps of PTFE tape in the direction of the thread before assembly. Hand-tighten first, then use a wrench for 1–2 additional turns.

What is the difference between BSPP and BSPT, and which type is this?

BSPP (British Standard Pipe Parallel) threads are straight, while BSPT (British Standard Pipe Taper) threads taper to create a mechanical seal. These fittings feature female BSP threads — please refer to the variant listing or contact us to confirm whether your application requires parallel or tapered thread engagement for a proper seal.

Can these elbows be used for gas lines?

304 stainless steel fittings are generally suitable for natural gas and LPG applications in residential and light commercial settings when properly sealed with an approved thread sealant. Always verify compliance with your local plumbing and gas codes before installation, and have gas line work inspected by a licensed professional.

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

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