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Drip-irrigation tubing, emitters and fittings

Drip fittings that fit your tubing's outside diameter

Pick your tubing by the outside diameter its maker states to see which fittings list that size, which connections meet it directly and which need an adapter, with the source on every figure.

Find your tubing sizeWhere the facts come from

Find your tubing size

Takes you from the tubing size you measured to the fittings whose makers list that size.

Choose your tubing size to see the key facts and what fits. Each fact links to its source on the full page.

All tubing sizes

Start here

Our top pick for the most common fits. Each one says who it suits and links to the research behind it.

All best picks

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Find your drip kit or system

Pick your kit or brand system to see the tubing it ships with, the fitting type and threads it uses, and the parts from other makers that state they fit it.

All drip kits and systems

Choose your drip kit or system to see the key facts and what fits. Each fact links to its source on the full page.

All drip kits and systems

Start with what you need to do

Tools, shortlists and comparisons

More by topic
ToolDrip connection type finder: what meets directly, what needs adaptersTells you whether two drip parts can join directly or need an adapter, and which dimension to check.Open →ToolFind your drip kit or system: tubing, fittings and threads by lineShows what your kit's maker documents about its tubing, fittings and threads, so add-on parts match it.Open →
ShortlistDrip emitters with a stated flow and pressure rangeHelps you pick an emitter whose flow holds across a stated pressure range that covers your system.Open →
ShortlistDrip line with published flow, spacing and run tablesHelps you choose a drip line whose maker tells you its flow, spacing and how long a run can be at your pressure.Open →
ShortlistFaucet head parts with stated threads, mesh and outlet pressureHelps you pick head parts whose threads match your faucet and each other, with the mesh and outlet psi to confirm.Open →
Shortlist1/2 in drip fittings with a stated OD rangeHelps you pick a 1/2 in coupling or tee whose maker-stated range includes your tubing's OD.Open →

Common buying mistakes

  1. Buying fittings by the "1/2 in" on the bag

    "1/2 in" is a family name, not a measurement. Rain Bird alone sells 1/2 in tubing at 0.63, 0.70 and 0.71 in OD, and a fitting listed for .700 in tubing is not listed for .710 in. Find your tubing's ID x OD before you buy a single fitting.

  2. Mixing hose thread and pipe thread

    A 3/4 in hose end does not mate with a 3/4 in pipe end without an adapter. Rain Bird's PRF07530S filter-regulator is 3/4 in MPT on both ends, so it needs a hose-to-pipe adapter at a faucet. Match hose to hose, pipe to pipe, and female to male.

  3. Skipping the filter or using the wrong mesh

    Clemson says drip systems need at least a 150 mesh filter, with some emitters needing 200 mesh, and DIG asks for at least 150 mesh for its PC stake dripper and inline emitters. Use the mesh your emitters' maker asks for, and clean the screen during the season.

  4. Trusting "universal" without the range

    "Universal" means a stated OD range, and each maker's differs. DIG lists its Universal NUTLOC fittings for .630-.710 in OD tubing, while Raindrip names the exact ID x OD pairs for Smart Loc. Check that your tubing sits inside the range the maker prints.

Guides

All guides
Guide1/2 in drip tubing sizes: .620, .700 and .710 in ODHelps you identify which 1/2 in tubing you have, by outside diameter, before you buy fittings for it.Read →
GuideHow to measure drip tubing before you buy fittingsHelps you get the one number (usually the outside diameter) that decides which drip fittings will fit your tubing.Read →
GuideFHT vs FPT, MHT vs MPT: hose thread vs pipe thread on drip partsHelps you match threads on faucet and drip parts, or pick the adapter between them.Read →
Guide"Universal" drip fittings: the OD range behind the nameHelps you read the size range behind a "universal" drip fitting and check it against your tubing's OD.Read →
GuideDrip irrigation filter mesh: 150 vs 200 and what emitters needHelps you choose a filter mesh that matches what your emitters' makers ask for.Read →
GuideDrip tubing popping off or leaking at fittings: causesHelps you find the likely cause of a pop-off or leak and the check to make before replacing parts.Read →

Recently updated

Glossary of 87 termsQuestions and answers

Young tomato and basil plants in a wooden raised bed, with dark drip tubing snaking along the soil between the rows
Photo: Marc Pell / Unsplash

How we choose

We start from the two things that have to meet: your tubing's outside diameter and the fitting, emitter or faucet part on the other end. Tubing sizes, fitting ranges, threads, flow and pressure ratings come from the makers' own pages, catalogs and manuals, and filter and watering guidance from university extension services; every figure names its source. Where a maker's figures conflict, we say so and point you to the ID x OD pair instead. We list a part only when it fits a size or connection we cover, and where we found no maker spec page we say so and tell you what to confirm on the listing. A store's name alone does not show that the brand authorized it. Nothing here has been tested by us, and we make no water-saving or plant-health promises; for backflow requirements, follow your water utility and local plumbing rules.

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