Drip Irrigation Index
Rivulis T-Tape model list

Rivulis T-Tape 508-12-220

12-inch emitter spacing, 8-mil wall, and 0.22 GPM per 100 ft at 8 psi.

Check maximum run length

Reel specifications

Wall thickness
8 mil
Emitter spacing
12 in.
Filtration
150 mesh
Reel length
7,500 ft

Flow by pressure

PressureGPM per 100 ftZone estimate
8 psi0.22Use 8 psi in calculator

Maximum run length

Check the length of one line against the manufacturer’s chart.

Published limit

770 ft

Level ground · 90% uniformity

Rivulis T-Tape US data sheet. The table specifies level ground and 90% uniformity. It gives 8 psi as the flow rating and leaves the run-length test inlet pressure unspecified.

What to check for this reel

The Rivulis chart lists 770 ft on flat ground at 90% emission uniformity. The Rain-Flo listing shows 950 ft without the same conditions. Use the manufacturer’s chart and check your slope and inlet pressure before sizing a long row.

Example zone demand

10 rows of 100 ft each would need about 2.20 GPM at the listed 8 psi. Check the flow available under pressure and the manufacturer’s run-length chart for your longest row and slope.

Search the full tape index or see a replacement comparison with fitting and filtration checks.

Sources