The Drip Store has poly tube made of all virgin material with carbon black for UV resistance.
.610 x .710 This has been used in the landscaping industry for quite a few years now so if a pro landscape company installed your drip system this 'could' be the size you have. A good way to identify it is most tube in this size has a blue strip along the entire length or uses compression fittings with blue ends.
Max flow rate of 250 GPH @ 25 PSI
Max length of 450 ft. @ 25 PSI
Note: All the numbers we quote are 'safe' numbers for designing a system. Variables may allow for longer or shorter runs.