1/2 in drip tubing at .700 in OD: sizes and fittings by maker

Key facts

Names it is sold under

1/2 in (DIG, Mister Landscaper); 5/8 in (Raindrip, for the .600 x .700 in pair); T70 (Rain Bird, 0.70 in OD)^[1][2][3][4]

Outside diameter

.700 in (DIG, Mister Landscaper, Raindrip); 0.70 in (Rain Bird T70)^[1][2][3][4]

Inside diameter

.600 in (DIG, Mister Landscaper, Raindrip's Smart Loc pair). Rain Bird gives no ID for T70^[1][2][3][4]

Tubing makers list at this size

DIG B35, B36, B39, B37 and B43, and the 50 ft in DIG's ML50 kit; Mister Landscaper MLT-71 (50 ft) and MLT-72 (100 ft); Rain Bird T70-50S, T70-100S and T70-500S^{[1][5][6][2][4]}

Maker pressure rating

DIG: up to 60 PSI. Rain Bird: 70 psi for T70. Mister Landscaper states none for MLT-71/72^[1][4][2]

Compression fittings for this OD

DIG black insert: C33 coupling, C35 tee and C36 elbow, all .700 in OD. Rain Bird Easy-Fit: 0.63-0.70 in OD, 0-60 psi^[7][8]DIG's page gives the black insert's lower bound as .680 in one place and .690 in another; only .700 in is certain.

Locking-nut and universal fittings

Raindrip Smart Loc S5600UB (.600 x .700 in, up to 50 psi); Orbit 67466 (.620-.710 in OD); Orbit 67491 Drip-Lock push-on (.690, .700 and .710 in OD); DIG NUTLOC (.600 in ID, within .630-.710 in OD); Mister Landscaper MLF locking-collar fittings for its MLT tubing^{[3][9][10][11][2]}

Barbed fittings

Not confirmedNo source in our register ties a 1/2 in barbed insert fitting to .600 x .700 in tubing.

Reducers and adapters

DIG D50G (.700 x .620 in OD) and D50B (.700 x .710 in OD) reducing couplings. DIG swivel adapters 15-005 (.700 in OD x 3/4 in FHT) and 24-029 (.700 in OD x 3/4 in FNPT)^[7][12]

End closures, plugs and stakes

Orbit 67468 end cap (.620-.710 in OD). DIG R61B: 8 in wire stake for 1/2 in tubing^[13][14]

How to identify it

Read the print on the tubing first. Then cut a fresh, square end and measure the OD across the outside with calipers; a reading near .700 in puts it in this size. Drip Depot says to check a tube's ID and OD before buying fittings. Steps: [how to measure drip tubing](/guides/how-to-measure-drip-tubing); lookup: [tubing size finder](/tools/drip-tubing-size-finder)^[15]

Maker-page conflicts

DIG's .600 x .700 in spec line prints a wall figure that does not match its own ID and OD, so we quote ID and OD only. DIG lists the black insert's lower bound as .680 in one place and .690 in another^[1][7]

Not confirmed

Not confirmedRain Bird states no ID for T70. No source gives a measuring tolerance. Whether DIG's black insert holds tubing below .700 in OD is not settled by its page.

What fits

Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.

• 0.70 in OD tubing

  Rain Bird T70‑100S 1/2 in heavy-duty blank distribution tubing (0.70 in OD, 100 ft)

  Choose the T70-100S 100 ft coil.

  Rain Bird lists T70 at 0.70 in OD and 70 psi; it does not state the ID.

• Compression coupling

  Rain Bird Easy-Fit EFC25‑1PS 1/2 in universal compression coupling (0.63‑0.70 in OD)

  Choose the EFC25-1PS coupling.

  Rain Bird lists Easy-Fit for 0.63-0.70 in OD, 0-60 psi.

• Compression tee

  Rain Bird Easy-Fit EFT25‑1PS 1/2 in universal compression tee (0.63‑0.70 in OD)

  Choose the EFT25-1PS tee.

  Same 0.63-0.70 in OD range as the Easy-Fit coupling.

• Nut-lock coupling

  Raindrip Smart Loc S5600UB universal coupling (0.620, 0.700 and 0.710 in OD)

  Choose the S5600UB coupling for .600 x .700 in tubing.

  Raindrip lists the .600 x .700 in pair (it calls it 5/8 in), up to 50 psi.

  Check price on Amazon

• Nut-lock tee

  Raindrip Smart Loc S5500UB universal tee (0.620, 0.700 and 0.710 in OD)

  Choose the S5500UB tee for .600 x .700 in tubing.

  Same three Smart Loc pairs as the S5600UB coupling.

  Check price on Amazon

• Universal coupling

  Orbit 67466 1/2 in universal drip coupling (0.620‑0.710 in OD)

  Choose the 67466 coupling.

  Orbit lists .620-.710 in OD.

• Faucet adapter with Drip-Lock outlet

  Orbit 67738 3‑in‑1 faucet adapter (3/4 in FHT, 150 mesh filter, 20 psi regulator, 1/2 in Drip-Lock)

  Choose the 67738 3-in-1 adapter for 0.700 in OD tubing.

  Orbit lists a 3/4 in FHT inlet and a Drip-Lock push outlet for 17 mm or 0.700 in OD blank tubing.