OS 140 pop-up Rectangular Sprinkler: Sprinkler System for Square and Rectangular Areas up to 140 m² in Size, Fitted Flush to The Ground (8223-20)

Model OS140 by Gardena. Review written 6 months after installation. 3/4” female pipe thread on bottom. +/- 28 PSI minimum to pop up. Excellent design & built very well. Bigger than you may think. Not as much of an eyesore as you may think. I bought 9 of these between two orders, which shipped to the US from Amazon UK and arrived a lot faster than estimated at checkout (about a week instead of three weeks). I’m very happy with the service. These are great sprinkler heads and a lot more fun than the standard Rotors or Sprays normally installed for US homes. The coverage area is very large: about 50 feet forward and back by 30 feet side to side (at approx 40PSI operating pressure). The width of the spray is adjustable and you can separately adjust left and right sides as needed, and it is easy to set forward and back limits. There is also a flow rate valve that adjusts the distance of the spray, though you would probably only lower this if your pressure was so high that the spray is turning into a mist. The spray is a nice “light shower” emulating a gentle rain. It does take longer to properly saturate an area but it gives the lawn more time to absorb the water, so there’s little or no runoff. These do not work very well on windy days because they have a rather tall spray, though they seem to do fine in a light breeze. I would also not recommend these sprinklers for odd shaped areas where the bordering space should not get wet since the pattern is square. One of these can easily replace 3 or 4 Rotors, but keep in mind that one of these delivers only about 3.5 gallons per minute over that same area, so watering times will need to be longer per zone. That said you can install fewer zones with each one covering a larger area. You might be surprised when you first see these sprinkler heads: they are rather large compared to others. In one part of my system I installed three OS140 sprinklers on a single zone where previously there were 12 Rotors split between two zones in the same area, and it turns out that I could have used only two for that area. Three did turn out to be better because I was able to reduce the watering time a little bit by shortening the forward and back distances on all three so there was no “head to head” watering coverage, resulting in more “passes” over each sprinkler’s area. About “head to head” spacing: these sprinklers work best in the middle of an area, with no overlap between sprinkler heads. The only real benefit of head to head coverage with these sprinklers is a reduced watering time. If you do decide to use head to head coverage you should consider putting the edge sprinklers on a separate zone so their watering time can be reduced by half to prevent overwatering. Some Smart controllers (the Yardian Pro) can run two zones at once, so you could start with center heads and edge heads (if pressure permits) and have the edge zone turn off halfway through the cycle. The design of the OS140 is an improvement over previous models that had a flip up lid and a more limited range of oscillation. The head of the new design sits neatly in a slot in the lid, and the lid can be removed and replaced at any angle, making it easy to fine tune the position of the of the head. The head can be removed without any tools by simply unscrewing it counter-clockwise. This gives you quick access to the filter for cleaning when needed. The spring mechanism remains in the bottom, secured by its own raised collar, and can also be removed if service is needed. The lower part of the body has a bunch of fins, or ribs, that firmly secure the sprinkler in the ground. My lawn guy has run over them many times and they haven’t budge or tilted, even when the ground was still soggy after a storm. The pipe connection is a female 3/4” NPT standard located at the bottom. For my installation I used a 90 degree threaded/glued elbow and connected directly to the laterals with PVC. These were installed in sandy soil by digging a 14” diameter hole, about 12” deep, and then seating the sprinklers in about 3” of pea gravel and fine sand up to the second fin/rib (mostly underneath the head to protect the pipe). The rest of the hole was filled in with the removed soil, tightly packing the dirt into the remain fins/ribs. Once the head is installed you really cannot turn the sprinkler body, but it is very easy to position the spray head to face the right direction by turning clockwise (you really can’t over tighten the threads since the pop up mechanism is designed to turn clockwise once the head is firmly screwed in). Overall I am very happy with this product, and my friends and neighbors are really impressed how well they work and pretty they are to watch. It’s like adding “dancing fountains” to my yard. If only they lit up at night: a strip of LEDs across the head powered by a little water turbine, perhaps?

I live in Brooklyn, NY and have a small rectangular garden in front. I wanted a watering system that: 1) Had the flexibility to have its spread very finely tuned so I didn't hit my neighbors' properties on either side but could also hit all of my plantings in one shot 2) Was an oscillating type sprinkler. I'm trying to have automated watering for an area where alot of tall plants are. Typical pop up rotor type sprinklers are nice because they are recessed in the ground while inactive but I was using them and because of the direction of spray they were just hitting plants in their immediate vicinity and getting blocked from hitting other plants. Coverage wasn't even. 3) Would recess into the ground after use since I hate the look of those big oscillating sprinklers sitting on the lawn. This is the only oscillating pop up sprinkler head made in the world I believe? Couldn't find anything even close to it. Had to buy it from the UK but it made it to my house surprinsingly fast (under a week). It takes a typical 3/4" male screw fitting in the bottom although, it is finnicky with the threads, not every 3/4" I had fit it. It does have a large footprint as others have said (about 11 inches diameter) but I spray painted the top of it black so that its less visible. I think it will be ok. Works perfectly and the amount of control you have to contour its spray in all dimensions (both in the x and Y plane) is great. Just installed it and I'll review again if it fails all of a sudden but it seems pretty solid right now!

Super cool sprinkler. I hooked up to funny pipe with a quick connect hose fitting in a valve box right next to it. Made adjustments and never have to adjust again. No more moving sprinklers

Awesome for my situation. Previously had 2 Rainbird 5000 series rotors and the one closer to the new patio slab was spraying most of the water on the concrete. Replaced it with this sprinkler and was able to get a nice square edge against the concrete. It was a direct screw in replacement, I dug out a bit wider seeing the pictures and had to dig a little deeper to get it to fit flush like it is supposed to. Looks a little weird with the one remaining Rainbird sprinkler, so I might order another but there is nothing wrong with it, pressure was adequate and great for both on the same zone.

I was aware of the measurements of this sprinkler unit but seeing in in my hands it looks really big -- I am not a conventional man and I will be doing something very unconventional with this -- I am going to mount it on a post or pipe and iinsert it into my hedges to water one half of my small front yard -- I have a similar Sprinkler that is on a spike pushed into the ground and not a pop-up -- the water falls short of the curb by about 2' using that Sprinkler -- I'm hoping that raising this one up 30" will extend the arc enough to get that part watered -- everything about this is well thought out -- a standard USA garden hose does not screw into this — I found the proper adapter at a local Hardware store in the in-ground sprinkler section -- you have to remove the top to access the water adjustments -- there are two levers to turn and the top pulls right off -- you get the same adjustments as the above ground units have -- flow dial, edge to edge and front to back -- the spring that pulls the sprinkler back into it's home is quit strong so there is little chance that it would stay above the ground when the water is not flowing -- the pictorial on the box indicates an operating water pressure of 28PSI there is no min./max. -- I have my doubts that 28PSI will push this against the spring and raise it up to operate, but it is so well made that I believe them -- The book and the box are truly international -- there are just short of 30 languages represented -- each gets a short sentence on every other page -- you basically have to interpret the pictures to get the details -- the warranty pages need to be read with a magnifying glass — this is resting on a metal tube that is notched to match the bottom so it can’t spin — I just pounded an aluminum tube into the ground — the hedges hold it i n place as the picture shows — the water line is connected with a push-to-lock adapter so it can be lifted off in seconds — the range is greater than the spiked model that I was using — I am happy with this unit — I would order more if I had a bigger yord