Best automatic underground sprinkler systems according to redditors

Riser. Your flow rate could be an issue if you’re trying to link them together.

In most cases, you don't need to do anything other than shutting the water off. Most systems will have drains like these that will automatically open when the pressure drops.

I've never seen a system with a 'manual bleed' valve like you describe, but I'm certainly no expert. Every place I've lived around here has had a system with drains, but there unfortunately isn't a reliable way to tell if the person who installed the system actually put drains in.

Based on your pictures, my gut feeling is that you're probably okay, as your valves don't look too old (I've lived in a place that had the same valves), and you probably don't need to do anything else. However, if you want a professional opinion, you could take those pictures to a nearby Sprinkler World location and ask them. (They're open this time of year because they also sell Christmas lights.)

Use the plan that makes it easiest to replace the pipes if they break. Cracking the concrete will cause a lot of work so I'd avoid putting the pipes inside the concrete unless they are inside a larger casing.

Without knowing some dimensions I can only suggest a simple solution. Run a large diameter (6") pipe through the fill dirt or concrete. Then run smaller pipes/tubing through the larger pipe. Leave the larger pipe unsealed, so any leaks in the smaller stuff can drain freely. That almost guarantees the larger pipe will remain intact in case of an accident and won't stress the concrete. Just be sure there is someplace for water to drain. If you ever have to repair the smaller stuff you don't have to rip the whole thing out, just replace the smaller pipes within the casing.

If you have room for a drainage line you might consider putting in a few automatic drains in all the pipes so that when the system is not pressurized it will just drain itself. Such drains are often used in lawn sprinkler systems to allow the water to drain out when the pressure is reduced. Something like this. How it works.

Drain blaster won't cut it, even one of the larger ones, there's just too much bulk in a tshirt for the amount of power it has. The quick and dirty way you could get something possible of shooting a tshirt would be a sprinkler valve at least 1" bore or greater, and a tank of some sort.

You can easily power the solenoid with a 9v battery, increase voltage for faster activation, or modify the valve for much faster activation. Be aware that increasing DC voltage on the solenoid will quickly increase the current draw and you will reach the point where you'll overdraw alkaline or lower end rechargeable batteries.

PVC makes a super quick/easy tank, but you have to be conscious of the risks associated with a material that is rated for water pressure instead of air pressure. I personally will not recommend using it, but if you choose this route be sure to keep the pressure used well within the ratings on the pipe, probably under 50% of the operating pressure, and a sleeve over the pipe such as the leg from a pair of jeans would be a good precaution in case of a rupture.

Black steel pipe would work similarly to PVC, but with an enormously higher pressure rating and a much increased price tag and weight to go with it. This would be a combination of easy and safe.

You could use an emptied fire extinguisher for a much safer pressure vessel, though you must be aware of the differences in ratings between them. Water extinguishers will have the lowest rating, usually under 100psi, while a dry chemical extinguisher will be rated around 300psi, and CO2 extinguishers the highest at 900psi or more though they're also the most expensive. In my experience your "average" sized extinguishers use a 3/4" NPT thread, though your experience may vary depending on the size/type you look for.

thank you. What about this? Input volatage is 120VAC @ 60Hz; Output rating is 24VAC @ 300mA. The one you suggested is 18 volt. Is that to play it safe? The bulbs are actually incandescent.

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