Model # 37321

Internet #100126627

Store SKU #449371

null 1/2 in. x 18 in. Flex Riser

1/2 in. x 18 in. Flex Riser

$368 /each
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Frequently Bought Together

Product Overview

Featuring flexible tubing that can be bent but resists breaking, the Orbit Cobra 1/2 in. x 18 in. Riser is great for installing sprinkler heads in out-of-the-way areas. This riser is made of high quality materials and is intended for outdoor use and cold water only.

  • Ideal for placing sprinkler heads in hard-to-reach areas
  • Flexible tubing allows for bending but resists breaking
  • High-quality construction
  • Union design swivel ends
  • For outdoor use and cold water only
  • To be used for outdoor applications only

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Color Family
Irrigation System Component

Warranty / Certifications

Manufacturer Warranty

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Customer Questions & Answers

Does this have male connectors on both ends?

Asked by: angie
Yes and they will fit the 1/2" standard pipe fittings and heads supplied by most major sprinkler manufacturers.
Answered by: lilrabbit
Date published: 2017-06-19

Will this withstand 120 lbs pressure?

my water comes in unrestricted
Asked by: Virgil
Virgil, these are not for use on constant pressure lines upstream of the valve - they are for use with intermittent pressure downstream of the irrigation valve. They will handle intermittent pressure of 120 psi. If your pressure is 120 static psi, though, it is very likely that the dynamic pressure downstream of the valve is much lower than that. Most sprinkler heads do not water very well at 120 psi dynamic pressure. Please feel free to contact our Support team at 1-800-488-6156 if you have any other questions at all, and we'd be happy to help. Thanks!
Answered by: OrbitIrrigation
Date published: 2016-05-24
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Customer Reviews

1/2 in. x 18 in. Flex Riser is rated 2.0 out of 5 by 8.
Rated 5 out of 5 by from I don't understand the negative reviews of these at all. These flex risers allow you to offset or... I don't understand the negative reviews of these at all. These flex risers allow you to offset or relocate heads in order to accommodate changes in your landscaping without having to dig up or replace a sprinkler line. They consist of two male ends connected to a flexible polyethylene tube, surrounded by a flexible outer tube. I suspect that the reviewers who are complaining about these are over tightening the fittings and distorting the seals. This is a common error with many types of flexible plumbing fittings because they just don't "feel" tight, and you can continue torquing down on them with a wrench long after they are tight enough. Make them finger tight and then no more than an extra 1/2 turn to seat the seals.
Date published: 2017-06-18
Rated 1 out of 5 by from These risers are Okay for places where you need connect a sprinkler in an unusual configuration, ... These risers are Okay for places where you need connect a sprinkler in an unusual configuration, but they are no substitute for the brown corrugated semi-rigid risers that were previously available. The idea behind a flexible riser is that if you kick the riser, you don't break the T-fitting in the sprinkler lines below. There is enough flexibility to sustain impact, yet keep the sprinkler from moving too much and going out of adjustment. The swivel ends have the disadvantage of making it impossible to replace the riser without digging a big hole in the lawn to unscrew it. It's Okay for some applications, but a bad substitute for semi-rigid requirements.
Date published: 2016-12-08
Rated 1 out of 5 by from Leaks like a sieve Would have been a great solution to my problem if it actually worked. But it doesn't, it leaks badly where the flexible tubing enters the connector. I commented to the sales rep at Home Depot before buying how flimsy it seemed. He said Orbit makes it and they know what they're doing. Well...
Date published: 2015-05-18
Rated 1 out of 5 by from Garbage Do not use these. Once they are buried for a while, the plastic inner tubing will detach from the bottom fitting, causing a major flood and requiring you to dig up the area to replace it. I cannot stress enough how bad these are. Every single one I purchased have failed. Just don't do it.
Date published: 2015-06-04
Rated 1 out of 5 by from 25% failure rate Easy to install but 3 of 12 broke free from the tubing causing the spray head to come free and land a foot or two away. The threaded part still remained in the spray head. Same failure on all 3. Probably will replace the next one with a more solid swing joint as these flexible risers don't seem to be put together very well. Lesson learned.
Date published: 2013-07-12
Rated 1 out of 5 by from Leaks no matter what you do I paid ~$100.00 for these for my garden boxes. EVERY one of them leaked. It made me so upset because i spent hours doing the teflon tape around each end and screwing them in place. They leaked from where the black and blue parts meet. EVERY ONE OF THEM. Do not waste your money or your time on these. I am taking them back to Home Depot. I wish I would have read the reviews before I bought them.
Date published: 2015-07-18
Rated 1 out of 5 by from HORRIBLE It leaks right away. Don't even try. Better build one with PVC flexible pipe.
Date published: 2015-06-28
Rated 5 out of 5 by from Great way to connect PVC to Sprinkler Head This is the best way to connect your PVC pipe to the sprinkler head. Allows you to position the sprinkler head exactly where you want it. If the sprinkler head gets run over by a car or tractor, these will flex and no broken pipe.
Date published: 2015-11-14
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