Connection type
Compression drip fittings: OD decides fit, by maker range
Compression fittings grip the outside of the tubing, so OD decides fit. DIG's green, black and blue inserts and Rain Bird Easy-Fit's 0.63-0.70 in range.
Also listed as compression tee, compression coupling, Easy-Fit
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Short answer
A compression fitting grips the outside of the tubing, so the outside diameter decides fit. DIG sizes its inserts by OD: green for .620-.630 in, black for .700 in and blue for .710 in, rated up to 60 PSI. Rain Bird lists Easy-Fit for 0.63-0.70 in OD at 0-60 psi, and says Easy-Fit adapters are not barbs. See DIG insert colors.
Key facts
- How it grips
- On the outside of the tubing: DIG matches each compression insert to a tubing OD[1]
- Ranges makers state
- DIG: green insert .620-.630 in OD, black insert .700 in OD, blue insert .710 in OD. Rain Bird Easy-Fit: 0.63-0.70 in OD (16-18 mm)[1][2]DIG gives the black insert's lower bound as .680 in one place and .690 in another; only .700 in is certain.
- Maker pressure ratings
- DIG: up to 60 PSI, recommended 15-35 PSI with a 25 PSI regulator. Rain Bird Easy-Fit: 0-60 psi[1][2]
- Reuse and removal
- Not confirmedNeither DIG's nor Rain Bird's compression page we read states whether the fittings can be removed and reused.
- Meets directly
- Tubing whose OD matches the insert: DIG C33 coupling, C35 tee and C36 elbow (.700 in OD); C43, C45 and C46 (.710 in OD). Rain Bird names Easy-Fit for XFD dripline (0.634 in OD)[1][3]
- Needs an adapter to meet
- Another OD: DIG D50G (.700 x .620 in OD) and D50B (.700 x .710 in OD). Threads: DIG 15-005 (.700 in OD x 3/4 in FHT) and 24-029 (.700 in OD x 3/4 in FNPT). Rain Bird's threaded Easy-Fit adapters go only into Easy-Fit compression fittings[1][4][2]
- Common mistakes makers name
- Rain Bird: Easy-Fit adapters are not barbed fittings. DIG lists a separate blue insert for .710 in OD, so the .700 in black insert is not the .710 part[2][1]
- Not confirmed
- Not confirmedReuse after removal is not stated. DIG's black insert below .700 in OD is not settled. Insert colors are DIG's; no source maps other makers' colors.
Watch out for
- DIG lists .680 in one place and .690 in another as the black insert's lower bound; only .700 in is certain.
- Rain Bird says Easy-Fit adapters are not barbed fittings and go only into Easy-Fit compression bodies.
- Rain Bird's Easy-Fit range stops at 0.70 in OD, so it does not list .710 tubing.
- DIG recommends 15-35 PSI with a 25 PSI regulator even though it rates the fittings up to 60 PSI.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Easy-Fit coupling
Rain Bird Easy-Fit EFC25‑1PS 1/2 in universal compression coupling (0.63‑0.70 in OD)Choose the EFC25-1PS coupling for 0.63-0.70 in OD tubing.
Rain Bird lists 0-60 psi.
Easy-Fit tee
Rain Bird Easy-Fit EFT25‑1PS 1/2 in universal compression tee (0.63‑0.70 in OD)Choose the EFT25-1PS tee for 0.63-0.70 in OD tubing.
Rain Bird lists 0-60 psi.
Questions
What decides whether a compression fitting fits?
The tubing's outside diameter. DIG matches each insert color to an OD, and Rain Bird lists Easy-Fit by OD range (0.63-0.70 in).[1][2]
What do DIG's insert colors mean?
Green is for .620-.630 in OD, black for .700 in OD and blue for .710 in OD. These colors are DIG's only.[1]
How much pressure can compression fittings take?
DIG rates its compression fittings up to 60 PSI and recommends 15-35 PSI; Rain Bird lists Easy-Fit at 0-60 psi. See fitting types compared.[1][2]