hot-tubplumbingrepair
This is the wet end of the Emerson pump in my Jacuzzi spa. Pictured above is a broken freeze plug adapter. The freeze plug adapter threads into the pump (lower center of pic). It broke with part of the threaded end still in the pump. What is the best way to remove the part that remains in the pump? None of these parts are metal.
Well, I think you have some remodeling of your sprinkler system to do. Here are some things that you need to think about.
So if you understand the above most of your questions become moot. Pull that box of the ground and toss it away. Then re-pipe the main water feed line to above grade and create a manifold arrangement that can feed to the number of anti-siphon valves that you need (number of controlled sprinkler circuits). The manifold is best placed closer toward the building foundation. Then re-pipe the various sprinkler circuit pipes so that come up right in front of the manifold connections. The valves will affix above. When it is completed it can look something like this:
or like this:
The advantages are many. It is much easier to repair and replace things that you can get to. The anti-siphon type valve, properly deployed, is the tried and true method to provide the isolation between the pressurized potable water service and sprinker circuits. Placing your control valves high like this is also an advantage if you live in a freeze climate zone where it becomes necessary to use pressurized air purging of the lines to clear out all the water before winter. The air can be applied to each circuit at the control valve. Lastly your low voltage control wiring is above grade where is stays much dryer and less chance of wiring corrosion.
If you plugged the pump you borrowed into the old main's float switch (and you can get them both into the pit - or just get the float switch freed from the old pump and secured to the hose on the temporary one), you wouldn't have to babysit it.
Yes, you're buying two new pumps on Monday (assuming that the battery is good on the backup pump and it has failed also). This time don't put the alarm for it on silence (or make sure that the new one you get does have an alarm), so that you know when the main pump has failed.
If the outlet you're working out of isn't a GFCI, run an extension cord to one while you're messing with it. Later, when your hands and the floor is dry, you can hook it back in.
Best Answer
Drill a hole in it, then use a standard screw extractor. But a new plug and re-install. FYI, its not a freeze plug. It is used to let trapped air out of the pump before priming on initial fill/refill and startup.