How much does it cost to add a check valve to a bathroom and kitchen drain?

Installing a check valve will not solve the problem, because there will be hair, vegetable leaves and other substances in the water in your house, and the check valve cannot be completely closed, and can only turn the big leak into a small leak, which cannot completely solve the problem. It is also necessary to solve it from the sewage dredging, and it is recommended to find a solution to dredge the sewer.

It depends on where you rent and in which district you want to rent in.

As long as it's close to the city center, it's expensive, and according to your conditions, the rent is a little more ordinary, around 400, and it shouldn't exceed 400, unless it's in the middle of the city.

It can be a little difficult to rent an apartment near the university, but it may be easier to rent in some family areas, and it can be cheaper.

If your sewer nozzle is blocked and you can't add a valve, then you still use a pipe to make your house's sewer pipe to the first floor.

The water can not be installed with any valves, otherwise it is easier to block, you are rare on the second floor of the water situation, should be on the first floor of the water, will not be on the second floor of the water, is the main pipe blocked?