My Co-op recently turned off my buildings hot & cold water supply to fix some pipes. Everything seemed OK for a few weeks, but now the water pressure coming out of the tubes cooper pipe (after the Delta cartridge) is very low pressure. I tried removing the cartridge (RP46463) and installing a new one - doing this evidently caused some rust or sediment to dialoged and it cam pouring our. After I installed the new cartridge the water pressure remained low coming out of the cooper tubing. I am thinking I need to have my co-ops plumbers come and use there equipment to blow out the water line for the tub/shower. I do have another new RP46463, but I wont install it until after the lines get blown out. I'm not sure that is the problem, I have already used a vacume that has a blower on the tube and shower and that did force water through the lines but the pressure remains low.
If anyone one has any ideas or suggestion it would be greatly appreaciated