304 Stainless Steel BSP Tee Pipe Fitting — Male & Female Thread, 1/2" to 2"

Match the fitting size to your existing pipe's nominal bore. BSP sizes refer to the bore diameter, not the outer thread diameter. For example, a 1/2" BSP fitting (DN15) typically suits pipes with a ~15mm (≈5/8") bore. Measure your pipe's outer diameter and subtract the wall thickness, or check the stamped size on your existing fittings. When in doubt, size up — a reducer can always be added downstream.

BSP Male (BSPM) threads are on the outside of the fitting and screw into a socket or female port. BSP Female (BSPF) threads are on the inside and receive a male-threaded pipe or fitting. The tee connectors in this listing are available in straight female, straight male, and combination Male-Female-Male or Female-Male-Female configurations to suit most plumbing layouts without extra adapters.

Yes. These fittings are made from 304 stainless steel, which generally provides good corrosion resistance in outdoor, humid, and freshwater environments. For marine or high-chloride coastal environments, 316 stainless steel is typically recommended. Always apply PTFE thread tape or pipe dope to the threads before installation to ensure a watertight, corrosion-resistant seal at the joint.

304 stainless steel BSP fittings in this size range typically support working pressures from 150 PSI to 300 PSI depending on size and wall thickness. Larger sizes (DN40–DN50) generally have lower pressure ratings than smaller sizes (DN15–DN25). Contact us to confirm the rated pressure for your specific variant before use in high-pressure systems or any safety-critical application.

BSP and NPT threads are not directly interchangeable. While they share similar nominal size designations, the thread angle differs — BSP uses a 55° Whitworth thread form while NPT uses a 60° thread form. In some cases a 1/2" BSP male may partially engage a 1/2" NPT female, but this will not produce a reliable seal. Use dedicated BSP-to-NPT adapter fittings if you need to connect the two systems.

304 stainless steel BSP tee fittings are generally suitable for low-pressure gas applications such as natural gas or propane distribution lines in residential settings. However, gas line installations are subject to local building codes and must be inspected by a licensed professional. Always verify compliance with your local regulations before use in any gas system, and use an appropriate gas-rated thread sealant.

Yes. BSP parallel threads (BSPP) require a sealant — typically PTFE thread tape (plumber's tape) or anaerobic thread sealant — to achieve a leak-free joint. BSP tapered threads (BSPT) rely partly on thread interference but still benefit from PTFE tape. Wrap the male thread 2–3 times clockwise (when viewed from the thread end) before assembly for best results.