BSP Female 3-Way Tee Pipe Fitting – Stainless Steel 90° Corner Elbow

BSP (British Standard Pipe) sizes refer to the nominal bore of the pipe, not the actual outer diameter. For example, a 1/2" BSP fitting typically has an outer thread diameter of approximately 20.9mm (0.825"). Measure the outer diameter of your existing male thread and match it to the BSP nominal size chart. When in doubt, size up — a slightly larger fitting is easier to adapt than one that is too small.

Stainless steel BSP fittings generally handle working pressures in the range of 150–300 PSI depending on size and wall thickness. Smaller sizes (1/4"–1/2") typically support higher pressure ratings than larger sizes (1 1/2"–2"). For exact pressure ratings, please contact us to confirm for your specific application.

Yes. Stainless steel (typically 304 or 316 grade) offers strong resistance to rust, oxidation, and mild chemical exposure. For marine or highly corrosive environments, 316 stainless steel is generally recommended. These fittings are well-suited for outdoor plumbing, irrigation systems, and exposed installations where long-term durability matters.

These fittings use BSP (British Standard Pipe) threads, which are parallel (BSPP) female threads. BSP and NPT threads are not directly interchangeable due to differences in thread angle (55° vs 60°) and pitch. If your existing pipes use NPT threads, you will need a BSP-to-NPT adapter to connect them safely.

A 3-way tee fitting has three ports — typically two in-line and one at a 90° angle — allowing you to branch a single pipe run into two directions. A cross fitting has four ports. This listing is for a 3-way tee (T-shape) configuration, ideal for splitting or combining flow in plumbing, irrigation, and compressed air distribution lines.

Yes, PTFE (Teflon) tape or a compatible thread sealant compound is generally recommended for BSP parallel thread fittings to ensure a leak-free seal. Apply 2–3 wraps of PTFE tape clockwise around the male thread before assembly. For gas line applications, always use a sealant rated for gas service and follow local code requirements.

Most residential water supply lines in the US use 1/2" or 3/4" connections. The 1/2" BSP fitting is commonly used for branch lines and fixture connections, while 3/4" is typical for main supply runs. If you are connecting to an existing BSP system, match the nominal size of your current fittings. If unsure, measure the outer diameter of the male thread and compare to a BSP size chart.