Drip Irrigation Index
Rivulis T-Tape model list

Rivulis T-Tape 508-12-340

12-inch emitter spacing, 8-mil wall, and 0.34 GPM per 100 ft at 8 psi.

Check maximum run length

Reel specifications

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

Flow by pressure

PressureGPM per 100 ftZone estimate
8 psi0.34Use 8 psi in calculator

Maximum run length

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

Published limit

595 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

Compared with 508-12-220, the spacing and reel length are the same. This version adds 0.12 GPM per 100 ft at 8 psi and lists 120 mesh filtration, compared with 150 mesh for 508-12-220.

Example zone demand

10 rows of 100 ft each would need about 3.40 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