There is a small ball inside the vent that is a check valve, so you can disassemble the cartridge from the housing. The cartridge seals with an o-ring, so take a flashlight and make sure the inside of the vent body is nice and clean and then screw in the replacement. We can also walk you through this process over the phone, if you want. (414) 338-6338
There is a small ball inside the vent that is a check valve, so you can disassemble the cartridge from the housing. The cartridge seals with an o-ring, so take a flashlight and make sure the inside of the vent body is nice and clean and then screw in the replacement. We can also walk you through this process over the phone, if you want. (414) 338-6338
Page 2, shows a nice cross section: https://www.caleffi.com/sites/default/files/media/external-file/38455_N…