Drip Irrigation Fittings
Irrigation fittings connect tubing, emitters, and distribution components into a complete drip system. The fitting catalog at Hydrobuilder spans the full range of connection types used in professional drip systems: barbed fittings (push-in without tools for standard poly tubing), compression fittings (tighten mechanically for a pressure-rated seal), TechLock push-fit fittings (Netafim's compression cap system for 17mm mainline), and bulkhead fittings for reservoir and tray penetrations. DIG, Netafim, and FloraFlex are the primary fitting brands covering the breadth of connection sizes and styles used in modern hydroponic and agricultural drip systems.
Fitting Types and Applications
DIG produces barbed and compression fittings for 1/4-inch and 1/2-inch poly tubing -- the sizes used throughout small-to-medium drip systems. Tees, elbows, couplings, and end caps in both sizes cover standard distribution line routing needs. Netafim 17mm TechLock and standard insert fittings are the standard for commercial mainline systems using 17mm Bright White PE tubing, with tees, elbows, couplers, and male adapters covering all connection configurations at 50-100 PSI ratings. FloraFlex push-fit fittings use a proprietary connection system for FloraFlex distribution tubing. Botanicare bulkhead fittings create watertight reservoir and tray penetrations for drain fittings, manifold connections, and return lines.
Selecting the Right Fitting
Match fitting type to tubing size and operating pressure. Never mix incompatible fitting systems on the same tubing run -- Netafim TechLock is not compatible with standard barbed fittings on the same 17mm line. Browse Netafim drip components, FloraFlex, and all irrigation supplies. Fast shipping.
Irrigation Fittings FAQ
What is the difference between barbed and compression irrigation fittings?
Barbed fittings have a ridged insert that pushes into poly tubing and holds by friction -- the barb ridges grip the tubing interior and resist pull-out under low-to-moderate pressure. They are quick to install without tools and practical for low-pressure drip systems (under 30 PSI). Compression fittings use a mechanical tightening mechanism (a nut and ferrule or compression cap) that creates a positive seal around the tubing exterior, providing a more secure, leak-resistant connection rated for higher pressures (50-100 PSI). Netafim TechLock fittings are a compression cap system specifically designed for 17mm poly mainline at up to 100 PSI. For commercial high-pressure drip systems, compression-type fittings are preferred over barbed; for low-pressure hobby drip systems, barbed fittings are practical and easy to work with.
What size fittings do I need for 1/4-inch vs. 1/2-inch drip tubing?
1/4-inch (6mm) tubing is used for final distribution lines running from a 1/2-inch mainline to individual plant sites -- connecting to emitters, drip stakes, and micro-tubing. Fittings for 1/4-inch tubing include barbed tees, elbows, couplings, and end caps in the 1/4-inch barb size. 1/2-inch (17mm) tubing is the mainline that runs from the pump/manifold to each growing zone, with 1/2-inch fittings (tees, elbows, ball valves) used to branch, route, and control the mainline. Many systems use both: 1/2-inch mainline with 1/4-inch take-off lines and micro-tubing running to individual plant sites through barbed tees or manifold blocks on the 1/2-inch main.
What is a bulkhead fitting and where is it used?
A bulkhead fitting creates a watertight penetration through the wall of a reservoir, tray, or container. The fitting consists of a threaded body that passes through a drilled hole, a rubber gasket, and a locking nut that tightens the gasket against both sides of the panel to create a leak-free seal. In hydroponic systems, bulkhead fittings are used in flood trays (for drain fittings), reservoirs (for pump outlet and return connections), and manifolds (for multi-line distribution). Always drill the hole to the correct diameter for the bulkhead body size, use both gaskets in the correct orientation, and hand-tighten the lock nut rather than over-torquing, which can crack plastic reservoirs and trays.
