PVC Straight Pipe Coupling — Red Socket Fitting 20mm, 25mm & 32mm

Match the coupling size to your pipe's outer diameter (OD). This listing covers 20mm (≈3/4"), 25mm (≈1"), and 32mm (≈1-1/4"). Always measure your existing pipe OD before ordering — nominal pipe size and actual OD can differ depending on the standard (Schedule 40, Class 200, etc.). When in doubt, bring a pipe sample to compare.

Standard schedule-class PVC straight couplings generally handle working pressures of 100–150 PSI at room temperature (73°F / 23°C). Pressure capacity decreases as temperature rises. For high-pressure applications such as main supply lines, confirm the schedule rating with us before ordering.

PVC is generally resistant to moisture and soil corrosion, making it well-suited for underground irrigation and drainage lines. For prolonged above-ground UV exposure, painting or wrapping the fitting is recommended — unprotected PVC can become brittle over time in direct sunlight. Underground use is typically fine without additional protection.

Yes. These are slip-fit (socket) couplings designed for solvent-cement bonding with standard PVC pipe. They are typically compatible with ASTM D1785 / ISO 1452 pipe of the matching nominal size. Use a two-step process: apply PVC primer first, then solvent cement to both the pipe end and socket. Always dry-fit before cementing to confirm alignment and insertion depth.

For a single pipe repair, 1–2 PCS is typically sufficient. For irrigation system builds or multi-zone plumbing runs, ordering 10–50 PCS provides better per-unit value and ensures you have spares on hand. Bulk packs are popular with landscapers, contractors, and anyone building out a full drip or sprinkler system.

Standard PVC fittings are generally rated for cold water and low-temperature applications (typically up to 140°F / 60°C). For hot water supply lines, CPVC or other heat-rated materials are recommended. These couplings are best suited for cold-water irrigation, drainage, pool plumbing, and general cold-water supply runs.

Installation typically requires a pipe cutter or hacksaw, a deburring tool or sandpaper, PVC primer, and solvent cement. No special power tools are needed. Cut the pipe square, deburr and clean the end, apply primer to both surfaces, coat with cement, push together with a slight quarter-turn, and hold for 30 seconds. Allow full cure time before pressurizing.

The red pigment is mixed into the PVC material and does not affect structural integrity or chemical resistance. Color is primarily for visual identification in multi-line systems. As noted above, prolonged UV exposure may cause surface fading over time, but this is cosmetic and does not in most cases affect the fitting's pressure performance.