1/4″ Poly Micro Tubing

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1/4″ Poly Micro Tubing

1/4″ Poly Micro Tubing

DIG’s 1/4 in. (.170 ID x .250 OD) polyethylene micro tubing is used in the installation of a drip irrigation system. It can be used either to extend drip emitters and micro-sprinklers from the ½” or ¾” polyethylene drip tubing to the plant areas, as extensions from the 4, 6 and 12-outlet drip manifolds or as the basis of a small patio system using ¼” barbed fittings. DIG’s versatile 1/4″ polyethylene micro tubing is available in black only and in coil lengths of 50′, 100′, 500′ and 1000′. This commercial-grade poly micro tubing is made of high quality, linear low-density polyethylene resin. The micro tubing is manufactured with an antioxidant and contains a minimum of 2% concentrated carbon black to protect the finished product from thermal degradation.

Features

  • Use to extend the drip emitters to plants
  • Available in 50′, 100’, 500′ and 1000′ coils
  • Contains a minimum of 2% concentrated Carbon Black resin antioxidant to protect the drip tubing from thermal degradation
  • The polyethylene micro tubing exhibits outstanding environmental stress-cracking resistance and burst strength
  • Use with DIG’s and others’ 1/4″ barbed fittings
  • Meets the demand of micro irrigation systems for above or below the ground layouts in agricultural, landscape and residential gardening installations
  • Interchangeable with other manufacturers’ brands of the same OD size tubing
  • Available in black color only.

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How to Order
MODEL DESCRIPTION
B38P 50 ft. of Low-Density Polyethylene Tubing (Poly Tubing)
B38100P 100 ft. of Low-Density Polyethylene Tubing (Poly Tubing)
B38500P 500 ft. of Low-Density Polyethylene Tubing (Poly Tubing)
B381000P 1,000 ft. of Low-Density Polyethylene Tubing (Poly Tubing)

Specification

  • Operating pressure: up to 60 PSI
  • Available lengths: 50', 100', 500’ and 1000' coils
  • Bending radius: 10"
  • Color: black
  • Size: 1/4" 170 ID x .250 OD (.50 wall thickness)
  • Material: low-density polyethylene with a minimum of 2% Carbon Black

Micro tubing friction loss chart in PSI per 50' length

c3 Flow cx c2 1/8" vinyl with .118 ID cx c2 1/4" vinyl with .156 ID cx c2 1/4" poly with .170 ID cx cx
GPM GPH L/H velocity f/s head loss in PSI velocity f/s head loss in PSI velocity f/s head loss in PSI
0.05 3.0 11.4 1.47 3.1 0.84 0.8 0.71 0.5
0.10 6.0 22.7 2.94 11.2 1.68 2.9 1.41 1.9
0.15 9.0 34.1 4.40 23.6 2.52 6.1 2.12 4.0
0.20 12.0 45.4 N/R N/R 3.36 10.3 2.83 6.8
0.25 15.0 56.8 N/R N/R 4.2 15.6 3.54 10.3
0.30 18.0 68.1 N/R N/R 5.4 21.9 4.24 14.4
0.40 24.0 90.8 N/R N/R N/R N/R N/R N/R
N/R: Not Recommended C=140
Videos & Articles
  • Demonstration Connecting a Button Dripper to 1/4" Micro

About

The 1/4″ poly micro tubing is used as the feeder line from the 1/2″ drip tubing to the plant area or plant locations. At the end of the micro tubing, a drip emitter, micro sprayer, 1/4” dripline or micro sprinkler can be added. Like the 1/2″ drip tubing, the micro tubing is suitable for any commercial or residential application. The micro tubing may be installed above the ground and covered with mulch to blend with the landscape, or extended from the 1/2″ drip tubing and installed below the ground. The micro tubing may also be used as the sole supply line for a small complete system for containers and potted patio gardens.

Installation:

Using the micro tubing as a feeder line:

  1. To connect the micro tubing to the 1/2″ drip tubing, first force a 1/4″ barb or 1/4″ tee (model H80A or H80B for barb and model H82A or H82B for 1/4″ tee) into the end of the micro tubing, then use the punch (model D44) to make a hole in the drip tubing.
  2. Insert the barb into the hole in the drip tubing. Use the micro tubing as a feeder line to reach a plant or cluster of plants away from the drip tubing and install a drip emitter, micro sprinkler or micro sprayer at the end of the micro tubing.

Using the micro tubing as a basis for a complete system:

  1. Connect the 1/4” poly micro tubing to the 1/4” hose thread adapter [model C37B] by forcing the end of the micro tubing into the compression side of the adapter while moving the tubing from side to side.
  2. Uncoil the micro tubing and lay it out adjacent to the plants to be irrigated.
  3. Near each plant or container, cut the tubing and install a 1/4” tee (#H82A) or in-line dripper (#WL110B).
  4. Connect another length of 1/4” micro tubing to the side outlet of the 1/4″ tee and extend it out to the plant or container.
  5. Open the supply valve momentarily and flush out the line[s] and then install a dripper (or other emission device) at the end of the micro-tubing.
  6. Secure the dripper in place by installing a stabilizer stake (#P39B) to the micro tubing next to the dripper.