PVC Metric Plumbing Fittings Pipe Straight Threaded Male & Female Connector

The thread type you need depends on the pipe or fitting you are joining to. If the pipe end or valve port has an external (raised) thread, you need a female connector to receive it. If the pipe end has an internal (recessed) thread, you need a male connector to insert into it. When joining two plain pipe ends, a female-to-female coupling is the most common choice, while a male-to-male nipple is used to bridge two female-threaded ports.

Metric BSP pipe sizes are identified by their nominal bore (DN) rather than their actual outside diameter. Measure the outside diameter of your pipe and match it to the table: 20 mm OD = DN15, 25 mm = DN20, 32 mm = DN25, 40 mm = DN32, 50 mm = DN40, 63 mm = DN50, 75 mm = DN65, 90 mm = DN80, 110 mm = DN100. If you are unsure, contact us to confirm before ordering.

No. Rigid PVC has a maximum continuous service temperature of approximately 60 °C (140 °F) and is not rated for hot-water supply, central heating, or steam applications. For hot-water systems, use fittings rated for CPVC, PP-R, or copper. These connectors are intended for cold-water supply, irrigation, pool plumbing, and low-pressure compressed-air lines at ambient temperatures.

Yes, thread sealant is required to achieve a leak-free joint. PTFE (polytetrafluoroethylene) thread tape is the most widely used option — wrap 2–3 layers clockwise around the male thread before assembly. Alternatively, a paste-type pipe thread sealant compatible with PVC can be used. Avoid solvent-based sealants or adhesives not rated for PVC, as these can cause stress cracking in the fitting body.

PVC threaded fittings have lower tensile and impact strength than brass or steel equivalents, but they are entirely adequate for the pressure ratings of residential cold-water and irrigation systems (typically up to 10–12 bar at 20 °C for schedule-rated PVC). The key advantage is corrosion immunity — PVC will not rust, pit, or dezincify over time the way metal fittings can in aggressive water conditions. Avoid over-tightening, which can crack the fitting; hand-tight plus one to two turns with a strap wrench is sufficient.

Yes. PVC metric threaded connectors are widely used in drip irrigation, sprinkler manifolds, and garden water distribution systems. They are compatible with standard irrigation valves, solenoids, and poly pipe adapters that use BSP threads. The corrosion-resistant PVC body handles fertiliser-dosed irrigation water without degradation, and the straight-through bore keeps flow restriction to a minimum across the available size range.

For a single pipe repair or a straightforward connection point, the 1-piece option is sufficient. If you are plumbing a manifold, running multiple branch lines, or want spares on hand for future maintenance, the 3-piece or 5-piece packs offer a lower per-unit cost. The 10-piece pack is suited to larger irrigation installations or trade use where multiple connection points of the same size are needed across a project.