Pack of 5 barbed fittings 16 mm for flexible pipe

The straight connector, 58 mm long, joins two pipes end to end: it repairs a split pipe without replacing it, or extends a run that has become too short. It is moulded in acetal, a hard engineering plastic with excellent wear resistance. The 90° elbow, 44 mm per side, in polypropylene, turns the circuit at a right angle without crushing the pipe, for example when routing it over the rim of a reservoir.

To fit a stiff pipe, soak its end in hot water for 30 seconds: the plastic softens and slides over the barbs more easily. Push it in as far as the central stop of the fitting, turning it slightly as you go. On a gravity-fed connection or behind a small pump, the barbs are sufficient to hold the pipe. Behind a powerful pump or with a rigid pipe, add a hose clip over each spigot.

In aquaponics, you use them on low-pressure water connections: feeding a rainwater top-up reservoir, the overflow from a small grow bed, or the return to the pond. Both materials are common plastics suitable for water contact and resistant to standard nutrient solutions. For higher-flow connections to a raised grow bed, the flood table fitting kit offers purpose-made bulkhead fittings.