Poly-Pipe Irrigation

Poly-Pipe Irrigation

Polyflex pipe fittings and tubing, a leading manufacturer of agricultural and horticultural plastics, uses only the finest polyethylene material which is more flexible than PVC.

We use the latest technology to ensures Poly-Pipe’s performance against the elements, especially the sun’s harsh ultraviolet rays.

Along with this strong commitment to quality, Poly- pipe gives the most cost effective irrigation system available next to, of course, Mother Nature.

Poly-pipe irrigation lay flat tubing
Poly-pipe flexible plastic irrigation tubing for large acreage irrigation

How Polyflex Poly-Pipe brings your irrigation costs down.

  • Eliminates costly main ditch cutting for irrigation and the need for dams on small grade changes.
  • Eliminates labor intensive hand priming of siphon pipe systems.
  • Eliminates 24 hour vigils searching for breaks in water soaked banks.
  • Reduces water costs by ending loss through evaporation or percolation.
  • Increases productivity by allowing you to irrigate where you want, when you want.
  • Less friction allows water to travel farther without boost.
  • With careful installation, retrieval and storage, you can use Poly Pipe for several seasons.
  • Durable polyethylene material is chemically more stable than PVC and stands the test of time

Dry headlands permit easy access to all gates for precise adjustments and fittings and optimum control over water flow and irrigation.

Poly-Pipe flexible field pipe is primarily designed for use with typically level grade farming. Poly-Pipe will not transfer water over hills or upgrades / up hills. Most standard headlands are level or have a slight or small downgrade and are perfect for Poly-Pipe. Minimum Order is 8 Rolls/1 pallet.

5 6 mil  8 inches 500 feet
7 7 mil 11 inches 1320 feet
7 10 mil 11 inches 1320 feet
9 7 mil 14 inches 1320 feet
9 10 mil 14 inches 1320 feet
10 7 mil 16 inches 1320 feet
10 9 mil 16 inches 1320 feet
10 10 mil 16 inches 1320 feet
10 15 mil 16 inches 660 feet
12 7 mil 19 inches 1320 feet
12 9 mil 19 inches 1320 feet
12 10 mil 19 inches 1320 feet
12 15 mil 19 inches 660 feet
15 7 mil 23.5 inches 1320 feet
15 9 mil 23.5 inches 1320 feet
15 10 mil 23.5 inches 1320 feet
15 15 mil 23.5 inches 660 feet
18 9 mil 28.25 inches 1320 feet
18 10 mil 28.25 inches 1320 feet
18 15 mil 28.25 inches 660 feet
20 9 mil 31.5 inches 1320 feet
20 10 mil 31.5 inches 1320 feet
20 15 mil 31.5 inches 660 feet
21 10 mil 33 inches 1320 feet
22 10 mil 34.5 inches 1320 feet
24 10 mil 37.5 inches 1320 feet

Other sizes available. Please call +1 (888) 334-1440 or email usgr@usgr.com

For Pricing information, please give Diameter, Thickness (mil), Length of each roll if not standard and number of rolls. The minimum order is 8 rolls in certain cases/1 pallet.

Gates supplied on request.  Please state total number required.

Installation Instructions

POLY-PIPE is primarily designed for use with level grade farming. It will not transfer water over hills or up grades. Most standard headlands are level or have a slight downgrade and are perfect for POLY-PIPE.

Restrictions for sloped headland (more than 2 to 3 ft per 1000 drop or rise).

Headlands with downgrades of more than 2-3 feet per 1000 feet may need intermittent restriction in the POLY-PIPE line to assure even water flow to the crop rows.

Be sure you have sufficient waterhead (Level or Slight Grades)

Head is the WATER SURFACE HEIGHT ABOVE GROUND LEVEL. At least 6 inches of head is required for water to enter smoothly into the tubing and transfer across level or slight downgrade headlands.

Pressure relief vents

The use of an open-topped air vent is advised at the connection point of the tubing. The vent allows excess trapped air to escape, thus, avoiding burst damage in the tubing. On long tube runs. pressure relief vents are required to avoid damage to your tube.

Pump water source

Most irrigation tube installations should include placement of an air vent 10 feet from the discharge pipe as well as on high spots


Begin with a small water flow and gradually increase to a full rate. As the POLY-PIPE tubing is filling (starting from the intake end of the tubing) punch gate holes or install adjustable gates as required. Consult your local dealer or county agent for recommended flow rates for your soil type and conditions.

The gate holes or adjustable gates should be installed between the 2 and 3 O’clock position.

NOTE : These instructions are general and act only as a guide for installation. Due to environmental and field condition variance, some steps may not apply to your particular operation.

Connection Instructions

The diameter of the discharge pipe must correspond or be smaller than the
POLY-PIPE that is to be attached. Rough or sharp edges should be smoothed
or taped before the connection.
Cuff approximately 1 foot of POLY-PIPE no to itself to form a double thickness
over the pipeline. Secure with a hose clamp.
Make sure the connection is at ground level or supported with dirt so the
POLY-PIPE does not hang off the connection. Slack should be left at the
water source to keep the tubing from pulling off the connection.


Tube Laying Instructions

To ease the initial strain on the discharge connection, have someone hold
the tubing until the pulling tension is no longer there.
POLY-PIPE must be laid evenly in a continuous trench, 50% of the tubing
diameter in depth and 100% of the diameter in width. The trench prevents
the POLY-PIPE from rolling when filled with water.
F. 90o TURNS
POLY-PIPE is flexible enough to complete a 90 degree turn with a 6 to 8
foot radius. Be sure trench radius is even on all corners.
A shovel of dirt every 15 to 20 feet will keep the tubing in place during
installation as well as maintaining proper tension for smooth unrolling
of the tubing
For irrigation, the open discharge end of the POLY-PIPE tubing should be
placed over a berm approximately 3 feet in height. This will prevent a
buildup of excess pressure in the tubing and avoid damage to the system.
The eventual pressure buildup will burst the tubing.

Improper venting is the most frequent cause of problems. If air builds up in the pipe it will restrict water flow and drive up pressure. An open top vent located about 10 feet away from the water source is best. Additional vents will be required at high spots. These are usually just gates punched into the top of the tubing.

Venting example
Gate Valve installation step 1
Gate Valve Installation – Step 1
Gate Valve Installation Step 2
Gate Valve Installation Step 2
Blue Gate Installation Step 3
Blue Gate Installation Step 3