A2 Stainless Steel BSP Reducer Elbow Pipe Fittings | 1/8" to 4" Male Female

Measure the outer diameter of your existing pipe threads and match them to the BSP size. For reference, a 1/2" BSP thread has an outer diameter of approximately 20.9mm (≈0.82"), and a 3/4" BSP thread is approximately 26.4mm (≈1.04"). The first size listed in each variant is the larger (inlet) port; the second is the smaller (outlet) port. When in doubt, use a thread gauge or caliper to confirm before ordering.

A2 stainless steel BSP fittings of this type are generally rated for working pressures up to 150 PSI (approximately 10 bar) in standard plumbing and fluid transfer applications. Actual ratings can vary by size — contact us to confirm for your specific size and application.

Yes. A2 (304) stainless steel offers good corrosion resistance in most outdoor and wet environments, including garden irrigation and outdoor water supply lines. For coastal or marine environments with prolonged saltwater exposure, A4 (316) stainless steel is generally recommended. These fittings are suitable for most standard outdoor plumbing applications.

These fittings use BSP (British Standard Pipe) threads. BSP threads are not directly compatible with NPT (National Pipe Taper) threads commonly used in North American plumbing without a dedicated adapter. Please verify your existing pipes and fittings use BSP threads before ordering. If you're unsure, a thread pitch gauge will confirm the standard.

Female (F) ports have internal threads that accept a male-threaded pipe or fitting. Male (M) ports have external threads that insert into a female-threaded socket or valve. Female-Male (F-M) fittings have one female port and one male port — useful for connecting two differently-threaded components or changing flow direction while simultaneously reducing pipe size.

Yes, PTFE thread seal tape (plumber's tape) is generally recommended for BSP parallel threads to ensure a leak-free seal. Apply 2–3 wraps clockwise around the male threads before assembly. For tapered BSP threads, PTFE tape or a pipe thread compound is typically used. Do not overtighten — hand-tight plus 1–2 turns with a wrench is usually sufficient for stainless steel fittings.

In most cases, yes. A2 stainless steel BSP fittings are commonly used in compressed air distribution lines. Ensure the working pressure of your system does not exceed the fitting's rated capacity (typically up to 150 PSI for standard sizes). Always use PTFE tape or thread sealant and inspect connections after pressurizing the system.