PVC Double Female BSP Thread Pipe Fitting — 1/2" to 2" | Straight Threaded Coupling

Match the fitting size to your pipe's nominal BSP diameter. BSP sizing is based on the bore (inner diameter) of the pipe, not the outer wall. For example, a 1/2" BSP fitting (20mm) is typically used with pipes that have an inner bore of approximately 1/2 inch. Always measure your existing pipe thread or check the pipe manufacturer's spec sheet before ordering. If you're unsure, bring a short section of your pipe to a hardware store to compare thread pitch and diameter.

PVC double female BSP fittings are generally rated for cold water service at pressures up to approximately 150 PSI (≈10 bar), though the actual rating depends on pipe schedule, temperature, and installation quality. Pressure capacity decreases as water temperature rises. For hot water or high-pressure applications, contact us to confirm the pressure rating before purchase.

Yes. PVC is inherently resistant to moisture, rust, and most common chemicals, making it a practical choice for outdoor irrigation systems, garden water lines, and exposed plumbing runs. For prolonged UV exposure, consider painting the fitting with a UV-resistant paint or shielding it from direct sunlight, as UV radiation can gradually degrade PVC over time.

Yes. These fittings use the British Standard Pipe (BSP) thread standard, which is widely used in plumbing systems across the US, UK, Australia, and Asia. They are compatible with BSP-threaded PVC pipes, ball valves, solenoid valves, and other BSP fittings. Important: BSP is not directly compatible with NPT (National Pipe Thread) — do not mix thread standards without a proper adapter, as the thread pitch and angle differ.

Yes. For a leak-free connection, wrap the male threads with PTFE (Teflon) thread tape before assembly. Apply 2–3 wraps in the direction of the thread. Avoid over-tightening PVC fittings — excessive torque can crack the fitting body. Hand-tighten first, then snug with a strap wrench or adjustable wrench, typically no more than 1–2 turns past hand-tight.

A double female (female-to-female) BSP fitting has internal threads on both ends, allowing you to connect two male-threaded pipes or components together. A standard slip coupling uses smooth sockets for solvent-welded (glued) connections. Use a double female fitting when both pipes or components you are joining already have male BSP threads — for example, connecting a male-threaded valve to a male-threaded pipe end.

PVC fittings are generally considered safe for cold potable water applications. However, suitability depends on the specific PVC compound and local building codes. If your application requires NSF/ANSI 61 certification for drinking water contact, please contact us to confirm compliance before ordering.

For a single repair or replacement, 1–2 pieces is typically sufficient. For a drip irrigation layout or multi-zone water distribution system, ordering 5–10 pieces of the most common sizes (generally 3/4" and 1") gives you enough to complete the run and keep spares on hand. The 20-piece option is well suited for contractors or larger installations where multiple connection points need the same fitting size.