Hydroponic Fittings, Tubing & Irrigation Supplies
Hydroponic irrigation systems require a complete set of fittings, tubing, and connectors to move nutrient solution reliably from reservoir to plant site -- mainline tubing, insert or compression fittings (tees, elbows, couplers, end caps), micro-tubing for individual site distribution, drip stakes or emitters at each plant, and flow control components like shut-off valves, pressure regulators, and disc filters. Using the correct fittings and compatible tubing for your system prevents the leaks, flow inconsistencies, and pressure losses that create irrigation problems mid-cycle.
Poly Tubing: 17mm, 13mm & Micro Tubing
The most widely used mainline tubing in commercial hydroponic drip systems is 17mm Bright White polyethylene (PE) tubing -- flexible, light-blocking, and compatible with the full range of standard hydroponic insert fittings and Netafim TechLock fittings. The 17mm designation refers to the outside diameter; inside diameter runs approximately 0.56-0.60 inches. Smaller 13mm tubing is used for lower-flow runs and sub-mainlines in systems with smaller plant counts. Micro-tubing (1/4-inch or 3/16-inch diameter) connects from the mainline barb down to individual drip stakes at each plant -- available in black (UV-stable for outdoor use) and natural/clear (for indoor use). For the precise compatibility specs on Netafim's mm sizing system and which fittings connect to which tubing, see our detailed hydroponic drip irrigation guide.
Insert Fittings vs. TechLock Compression Fittings
Standard insert fittings (barb-style tees, elbows, couplers, end caps) push into the tubing ID and hold by friction -- maximum rated pressure 50 PSI, straightforward tool-free installation. TechLock compression fittings from Netafim use a cap-and-ring mechanism that engages the tubing OD for 100 PSI rated pressure, 67 lb pull-out resistance, and reversible connections -- the correct choice for high-pressure systems or permanent installations. For most above-ground drip irrigation systems in grow rooms operating under 30 PSI, standard insert fittings are adequate. FloraFlex fittings offer a push-fit design for their manifold and top-feed system components -- compatible with FloraFlex caps and tubing but not interchangeable with Netafim's sizing system. Fast shipping.
Hydroponic Fittings FAQ
What size tubing is standard for hydroponic drip systems?
17mm Bright White PE poly tubing is the standard mainline for most indoor hydroponic drip systems -- compatible with standard 17mm barb insert fittings, Netafim TechLock fittings, and Woodpecker drip stakes. The 17mm designation is the outside diameter; inside diameter is approximately 0.56-0.60 inches. From the 17mm mainline, 1/4-inch micro-tubing runs from barb inserts to individual drip stakes at each plant. For larger commercial systems with higher flow requirements, 3/4-inch or 1-inch PE mainline may be appropriate. See our drip irrigation guide for complete system sizing guidance.
Are Netafim fittings compatible with FloraFlex tubing?
Generally no -- Netafim and FloraFlex use different sizing conventions and fitting systems that are not interchangeable. Netafim fittings are sized to their PE tubing dimensions (13mm, 17mm, etc. referring to OD or ID depending on fitting type). FloraFlex uses their own manifold, cap, and tubing system designed for compatibility within the FloraFlex ecosystem. Mixing components from these two systems often results in sizing mismatches, leaks, or incompatible connection interfaces. Choose one system for each drip installation and source all fittings, tubing, and emitters from that system's product line to ensure compatibility.
Do I need a pressure regulator in my drip irrigation system?
Pressure regulators are beneficial when your supply pressure exceeds the rating of your drip emitters or fittings, or when you want to ensure consistent pressure across long irrigation runs. Netafim Woodpecker pressure-compensating drip stakes maintain consistent flow from 10-50 PSI without a dedicated pressure regulator -- the PC mechanism handles pressure variation internally. For standard non-PC emitters and long runs where pressure varies significantly from head to tail, an inline pressure regulator set to 25-30 PSI at the head of the run improves delivery consistency. For most hobby grow room systems with short runs (under 50 feet) and a standard submersible pump at moderate pressure, a pressure regulator is optional rather than required.
