I am wanting to remove the under the sink water filter system from my kitchen to replace it with a soap pump. The system connects to the main cold water shut off valve, which is also where the connection for the regular faucet is, so I don't have the option of just leaving the shut off valve closed. Do I need to buy a new shut off valve that only has one output which would go to the faucet, or is there a way to block off the second output that previously went to the filtration system?
2021-04-04T22:16:22Z
Here is a link to a picture of the valve: https://ibb.co/KygWyV1 The line on the right is the line that currently goes to the filter, while the line coming out the top is the regular faucet line
champer2021-04-05T08:19:04Z
You don't need to buy another valve, unless you want to. You can simply cap the stub where the filter line is connected to the valve, hardware stores will supply the cap. Just disconnect the filter line and cap the valve where it came from.
You want to remove all of the tubing back to the connection on the valve. You can buy a tubing cap that will screw on to the threads of the connection at the valve. There is also a hole drilled in you sink waste water drain that is held in place with a clamp. Undo the clamp and remove the waste water discharge tubing for the filter. You can replace the sink downcomer that has the drilled hole in it or put a piece of aluminum air conditioning duct tape over the hole. Everything is at the hardware store. Take a piece of the tubing with the connector to the store so you can get the right size. You might also want to think about keeping the RO system because it (or a new RO filter) should make high quality water. If so, consider drilling another hole in the sink for the soap dispenser. With a good hole saw, it is not hard. You might also consider buying a new faucet that requires fewer holes, thus giving you an extra hole for the soap dispenser.
Yes, you need a new shut off valve. The pipes look bigger in the picture, but I am assuming you have a 1/2" supply. You would need a 1/2" compression fit with a 1/2" male pipe thread.
They make caps for plumbing so find the appropriate one. A picture would make it a lot easier to answer this question as shut off valves themselves have one outlet typically.