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2007-09-08 16:36:49
2007-09-08 16:36:49

The valve for the main drain on older pools would be located at or on the equipment pad. You will most likely need a pool tech who knows how to plumb pool equipment to have it changed out.

On the other hand if you mean replacing a broken or loose main drain grate then you would have to take the loose or broken grate to your local pool store for an updated version replacement. They will advise from there.



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How do you know that the main drain is plugged? When was the last time that you back washed or cleaned the filter? If there is no flow at the main drain - check to see if a valve has been closed or adjust the variflow valve in the skimmer - located at the bottom of the skimmer- if you have that type of skimmer. Also check the pump basket - it may be full of debris.k

My pool has two main drain openings, to prevent entrapment. I use a Kreepy Krawly pool cleaner so the main drain stays closed all the time, otherwise, the Kreepy Krawly would get stuck every time it passes over the main drain. There is a valve located with the pool equipment (filter/pump/various valves) which is used to open and close the main drain. I'm no expert, but that's the way mine works.

Would advise that you get a professional to address the situation first hand. The main drain is intrigal to your circulation.

You turn off the main valve and drain water, unscrew old tank and fit new one. Turn on water again.

If you mean you are losing water, it may be a broken or cracked main drain or possibly your hyrdo-static valve is malfunctioning. One other possibility is a break in the pipe going to the main drain.

Use the main drain when backwashing, rinsing, or vacuuming. Use skimmer all other times to filter.

You turn off the water valve before it -probably on the sidewalk, or just on your front yard. Then remove the main valve and replace it. NOT a job for amateurs. I hope you have some experience at least.

No. You cannot use the main drain to lower the water level below the skimmer. This is because the main drain is not really a drain. It only connects right back to the 3 port valve in the skimmer.

If its not connected through the skimmer I imagine it's there to empty it. hmmm, on the above. The main drain in pools is for circulating the lower part of the pool and is not intended to drain the pool as in a bath tub.

You can get a back water valve. It is similar to a check vale/ the back water valve goes on your main sewer line out side of home. It is desined to stop black water form coming into your home if main line stops up. Thay do make a device that can be installed into an exsisting drain it lets water through your drain but will not let water back up through you shower drain.

If you look at the pipe that is going into the filter pump you will notice that it has a tee that is peceeded by two or three pipes comming up from the ground. Those will be from the skimmer, main drain, and if you have one from the cleaner. If you observe the flow of water in the skimmer then change the valve so there is no more water flowing that will be the one going to the main drain or cleaner. Repeat the process to eliminate which one is the cleaner. Which ever one is left is the main drain.

Is this a sand filter? How many valves control the flow of water? It appears the b/w valve is defective.

The drain - called main drain- is or should be connected with the skimmer plumbing and that goes to the pump. You should not have to clean the main drain unless you have a massive amount of debris. Main drains are routinely cleared using a CO2 tank and either a plug adapter or an inflatable canvas bag thingy the name of which escapes me at the moment. Place it in the front port of the skimmer if that is how it is plumbed and open the tank valve full blast. You will either clear the drain or the plug/canvas thingy will come shooting out of the skimmer so don't stick your face over it when opening the valve. If the pool has a separate main drain there will be at least 1 three port valve in front of the pump pot. With the valve pointed in the right direction put the CO2 tank hose with plug or canvas thingy into the suction line and let er rip.

what are the main rules in swimming

If it still works, it will open before the pool is completely empty. But are you sure the valve is hydrostatic? If it is not, then you will need to shop-vac the water remaining over the bottom drain, remove the drain cover, shop-vac the water under the cover, and then remove the lug nut and slide out the (manual) relief valve.

put a pump in it and drain it. dont try if its anything other than a gunite pool. Pools are equipped with pumps already. If you have a main drain on the bottom, just set the pump to pull only from the drain, and set the spider valve to waste.

Really you should not do this yourself unless you are relatively experienced and have the proper tools. Shut off the water at the meter. Drain the pressure from the system. Get the Outside diameter of the pipe on each side of the valve. You will need 2 pressure couplings and a new valve in between. You will need room to install your pressure couplings at least 2" of straight pipe on both sides of valve.

After a main water valve is closed the system's PVC pipes are still full of water and will drain to the lowest sprinkler head until the system is empty.

the hydrostatic valve is only to equalize pressure of ground water to that of the pool the only time it does anything is when the water table becomes higher in the ground water than in the swimming pool . it doesn't connect to anything. it is simply to keep the pool shell from floating out of the ground

The main drain should be split to two drain basins at least three ft. apart. This is done to prevent suction entrapment.

A check valve allows water to flow in only one direction, so placing one between the toilet and the main will keep water from flowing into the stool from the drain.

Assuming that the pool in question is in-ground - The plug is a valve which allows underground water to enter the pool. The reason for the spring loaded valve to let water enter the pool is that if there were a large amount of water underground the pool eventually could be lifted when the ground freezes or when the pool is emptied. Main drains have two (2) holes one at the bottom and one at the side.. Most are plump from the sides.. Plug in main drain Depending on the brand of main drain it could have two holes, one for a suction line and the other for a hydrostatic relief plug or valve. Or perhaps the second line is used to balance a skimmer? How about all of the above? Your pool pro may be the smart move here. Of course it could have only one Or perhaps a line is plugged because it was leaking in the past and it was not affordable to fix for the previous owner. If the main drain itself is indeed sucking water, here is the most important question, is the cover on secure and safe? Is the cover a safety cover? Your swimming pool professional licensed and insured can also make repairs. good swimming

Unless the pool has a dedicated main drain line and a positive seal valve it is best to use a submersible pump. Most newer pools have the main drain line connected to the skimmer and there is a diverter valve in the bottom of the skimmer that regulates the ratio of main drain vs. skimmer suction. Once the water level drops below the skimmer throat the suction is usually lost. Check with your local codes and laws as some areas require draining into a sewer cleanout and other areas allow draining into the storm drain system as long as the chlorine has been allowed to dissipate and the pH is between 7 and 8.

it is in a normal drain

Unless you have multiple hand cranked valves at the equipment pad you can't. Some pools systems have a valve of sorts in the bottom of the skimmer that will reduce the flow but may not entirely shut it off. Why the need to shut the main drain? Ken

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