2.0 gallon per hour pressure-compensating emitter delivers same uniform flow rate from beginning to end of tubing runs
Slow watering rate allows soil to absorb water more completely in the root zones of plants
Self-piercing design; use with 1/4" Drip tubing or insert into 1/2" or larger Drip tubing
Large water passages and self-flushing action help prevent clogging
Constructed of highly durable UV and chemical-resistant materials to assure long life
Plastic bag contains (30) 2.0 gallon per hour dripper/emitters
Description: Rain Bird SW20-30PS Drip Irrigation Spot Watering Dripper/Emitter, 2.0 Gallon Per Hour, 30-Pack. This robust pressure-compensating emitter provides a medium-high 2.0 gallon-per-hour flow rate. Ideal for watering root zones of garden and landscape plants, shrubs, bushes, small trees and medium size containers. Rain Bird's pressure-compensating design ensures all plants receive the desired watering rate regardless of their position along the distribution tubing run. Uniform flow is delivered throughout a wide pressure range from 15 to 50 PSI. Barbed ends securely retain 1/4" Drip tubing for a leak-proof connection. Self-piercing barb allows for direct insertion into the side of 1/2" or larger Drip irrigation tubing, or use with 1/4" tubing for positioning near individual plants. Simple to insert by hand, or for faster installation use one of Rain Birdâ€™s insertion tools (sold separately): ET/1PK25S, HPUN1-1S, and HPTCX. Designed with large water passages and self-flushing action to help prevent clogging. Constructed of highly durable UV and chemical-resistant materials to withstand adverse conditions. Rain Bird emitters are color coded to easily identify flow rate. Convenient plastic bag contains (30) red-colored emitters. Also available in: 0.5, and 1.0, and 5.0 GPH flow rates to customize watering of varying plant types and sizes. Rain Bird "The Intelligent Use of Water"
★★★★★370 real customer reviews average rating: 4.5 stars (scroll to see all)
5 Stars By Fuzzball on 2016-06-17 Exactly the Right Amount of Water, Exactly Where You Want It, Automatically. Done. We have about 120 wine grape vines in six 70ft. rows on our Michigan Upper Peninsula farm. They are a mix of 1, 2 and 3 yr. olds. It's a hobby crop and we are trying to be cost and time efficient because we both work full time. Our first watering system was simply runs of soaker hose which proved unsatisfactory for a variety of reasons. We stumbled upon the Rain Bird drip irrigation system while wandering around at Menard's. The 1/2" main water line was quite reasonably priced at $30 something for 500 ft and the 1/4 tubing also at $8 for 100ft. I made my own ground staples out of 12ga vineyard wire) The whole system is well designed and very easy to install. Each of 120 vines required a certain amount of fiddling to get the tubing aimed where you want it but zip tying them to the stakes turned out to be the ticket. I am very impressed with the flexibility and the accurate delivery. We used these 1gph emitters, pierced directly into the main line and 1 foot of small tubing to aim the drip where it's needed. A little bit of trial and error and we discovered some necessary alterations in our plan, but nothing that really set us back---it was all quite logical once we got started with the installation. The whole system is run through a standard digital water timer---the kind used in-line with a garden hose. Pushing the emitters into the hose requires some effort and I'm glad I bought the special tool made for it---but I also found it useful to make a backing block out of a chunk of 2x4 to make that job even easier. Just slide the block under the main hose into the channel and the hose is supported and kept from flattening out as you easily poke that little guy in---(on the end of the block I cut a slot to make pushing in the ground staples easier) see the pictures. On the whole I'm very satisfied and we plan to install another system for our 3 big raised bed gardens. I recommend this system for DIYers and anyone who's a bit handy. Even on much smaller systems than mine, it seems like it would be cost effective in labor and water savings as well as over-all garden health.
Note on useful life of system: My goal is to get at least 3 years out of this system, including taking it up each fall and reinstalling each spring. I'll update this review as those experiences are accumulated. So far so good though at this beginning stage.
1 Stars By InTartifletteWeTrust on 2016-06-18 READ BEFORE YOU BUY! ABSOLUTELY INCONSISTENT FLOW! Update August 20, 2016
After looking at the rows of lettuce, broccoli, Swiss chard, Tomatoes, Cabbage, etc etc. I noticed a fairly large difference in growth from one plant to another. As of August, we had so far a rainfall deficit of 9 inches in MA, hence this spring/summer the watering was almost only drip irrigation sustained. While planting the fall crop, I decided to measure precisely the output of those emitters, and I had a nasty surprise: They are *absolutely inconsistent* from one to another, and from one test to the next. (15 minutes apart) Some emitters drip as low as 0.08 GPH to as much as 0.92 GPH. The *same* emitter can go from 0.24 GPH to 0.92 GPH within 2 test spaced out by 15 minutes. I would not mind it too much if they were 0.7 instead of 0.5 GPH, but the same one will have over 350% difference output between 2 test. Out of 10 emitters, 8 are JUNK. That's only a 80% fail rate. Look at the video and you'll see. 8 test performed total.
Emitter #1, Test 1, 0.46 GPH || Test #2, 0.41 GPH Emitter #2, Test 1, 0.55 GPH || Test #2, 0.20 GPH Emitter #3, Test 1, 0.13 GPH || Test #2, 0.14 GPH Emitter #4, Test 1, 0.08 GPH || Test #2, 0.16 GPH Emitter #5, Test 1, 0.08 GPH || Test #2, 0.18 GPH Emitter #6, Test 1, 0.24 GPH || Test #2, 0.92 GPH
Tech specs for the test Brand new emitters. Main line 0.500 in @ 30 PSI. Timed at 10 minutes exactly. Complete line purged of air. Municipal water (clean) + 200 Mesh (75 microns) filter , 1/4 inch line on a loop. Plastic cups placed under the emitters, each cup measured at 12 grams. and then you weigh the water after x minutes. 1 gram = 1 ml
If you are looking for the top notch quality emitters, cleanable, etc, then it's Antelco CETA available on Amzn here: 0.5 GPH http://amzn.to/2p9BpxY 1 GPH http://amzn.to/2ppqShS 2 GPH http://amzn.to/2ohqs9u Disclaimer: I did not have the same issues with the 2GPH RainBird, but after trying RainBird, Koram, RainDrip, and Antelco, I now use Antelco almost exclusively. Lastly, the vendor (Drip Depot) of those Antelco PC drip emitters has a *stellar* customer service.
Antelco: If you don't know the Brand, you should know that more than a few RainBird products are in fact Antelco re-branded
5 Stars By Mark Taylor on 2012-05-14 Barbed 1 Gallon Emitters The 30 pack contains "barbed" emitters that can be inserted without pre-punching a hole.
If you have strong fingers, and if it is a warm day, you should be able to inserted these into 1/2 inch to 1 inch poly without a tool.
Don't buy 10 at a time for $8 when you can get 30 for around $10.
1 Stars By Ron Riley on 2017-09-15 Use these for ONE gallon per Hour After figuring out how much water I need for each individual plant, I ordered these. With 5 of these in use for the total run, a direct connect to the faucet with 60 pounds pressure. BY MEASUREMENT: I got 5 quarts in 1 hour & 10 minutes. SHOULD have been at LEAST 8 quarts PLUS. I will need to double all of the runs I need to eventually cover all 24 plants. UPDATE: Added 12 more drippers and 1/4" line. Tested the 16 dripper line, THREE(3) of the drippers LEAK at the 1/2" Hose connection. Any Clue what I can use to fix the leak, that will last buried under ground ? People say" "If you don't buy the Name-Brand" you get what you pay for".... Well THAT DIDN'T WORK !!!
4 Stars By Mom on 2015-05-22 Works well, but NOT as described Cut and pasted directly from the description
1.0. GPH spot watering emitters for drip irrigation in a convenient large 30-pack Slow watering rate allows soil to absorb water more completely in the root zones of plants **Use in-line with 1/4" tubing or insert into 1/2" distribution tubing and run 1/4" tubing to plants** Pressure-compensating design delivers uniform flow from the beginning to end of tubing runs Self-flushing action minimizes clogging
Note the third line in the description provided. I could not get these to work as in-line off my gravity-feed rain barrel. Fortunately I had some three-way adapters and was able to make it possible for each to have its very own spot at the "end of the line", and they are working wonderfully for that. But not until after I had to splice all my cut 1/4" tubing back together again to run water to them! (Most annoying)
5 Stars By Meemers1972 on 2012-05-26 Easy to use! Wish i'd have bought these to begin with! These have a very sharp point on them and can pierce irrigation line by twisting and pushing them in firmly. Your fingers do get sore after pushing these in, but these are some of the easiest i've used. Doing it on a hot day is also easier! The tool, no matter how good, just doesnt pierce completely. I used 2 per arborvitae for 2 gph, per tree with 1/4 tubing. My water pressure stays pretty even over 120+ feet(frontyard) with 1/2 rain bird supply tubing. I have a longer run of over 350ft(backyard) to install these in later and hoping i can get similar results, otherwise i may need to use the rain bird 1/2 gph dripper. i've installed valves separating the frontyard from the backyard to improve pressure and function.
I've used 2 different adjustable drippers, shrubbler and a fan type spray. The adjustable's would probably work great for smaller runs of under 80ft or flower beds... My deep well pump likes these better and runs half as much with these drippers saving energy.
Hope this helps with your project.
1 Stars By Evan Resing on 2015-04-07 Only work at low pressure. They do not work with 25 psi water pressure. I have a 25psi pressure reducer on my system. These drippers literally DO NOT drip at that pressure. I tested this by slowly closing the shut off valve from my water source. At some point, when i reduce the flow enough, the drippers will all start working! I couldn't believe it. The product description says these work from "15 to 50 psi". This is not true!
Anyway, I went to home depot and bought DIG brand drippers which work great.
Don't buy these unless your water pressure is seriously reduced to like 10 or maybe 15 psi.
1 Stars By Steve Summers on 2016-07-27 Should have read the other one-star reviews Installed a sixteen of these on 4 drip lines running downhill from 30 PSI regulators. Not a single one put out even a drop of water. I could blow air through them, but they blocked all water. (No, I didn't plug them backwards.) I snipped them all off and replaced them with standard emitters which worked just fine. Tossed 'em into the trash today.
5 Stars By Todd M. on 1969-12-31 Decent drippers... buy in bulk & save These are pretty good emitters (drip lines) and the cost for the 30-pack was worth having some spares. Of course, just after I purchased these for nearly nine bucks the price dropped. I have some extensive gardens and use these on things like squash when overhead sprinkling isn't as effective when they leaf out. I also went for the 2 gallons per hour because I usually water for about a half hour at a time so I'll get about a gallon each time at the roots and that's adequate. The GPH rating is pretty useless if you don't plan on watering at least an hour so with what I'm doing a 1-GPH would only give me a half gallon and that's not enough. What's also nice is that the barb allows you to insert these directly in your 1/2" feed line and then run a 1/4" line to wherever you need it. I've used the kind where you tap a 1/4" line into your feed line and the emitter goes on the end but they tend to clog. Couldn't find anything to gripe about other than waiting a few days the price dropped by about a buck less than I paid.
3 Stars By A. M. on 2015-08-24 OK, but not great, and not as described Info suggests these are in-line drippers, i.e. you can put a string of them in one 1/4" line. They aren't -- they need to go into larger pipe and each have their own outlet thru tubing, or some branching arrangement. I also noticed some inconsistency in drip rate; some drip faster than others.