A plumbing vent is any pipe provided to ventilate a plumbing system, to prevent trap siphonage and back pressure, or to equalize the air pressure within the drainage system. This allows for faster draining as air is allowed into system and also provides a means for sewer gases from enter home as they are safely vented above the roof.
Many plumbing fixtures are direct vented if they are close enough to the main waste stack. In Ontario the distance is eight feet which allows using the main vent stack and not installing a separate vent for fixture. There is a table which gives the distances for different size pipe.
Wet venting is a venting method that permits the vent pipe to receive a discharge from fixtures. This is based on the fixtures drain pipe being over-sized to also allow for adequate air flow for venting. This is typically restricted to one bathroom group as it is assumed only one fixture will be in use at any given time.
Often renovations and other plumbing work is performed by un-licensed plumbers. This can lead to plumbing noises and odours due to improper installing drains and vents. It is important to use trained and licensed plumbers when working on your homes plumbing system.
There are many different types of choices when it comes to plumbing your home. For water supply, there is PVC, CPVC. PEX, Galvanized Pipe, and copper. Polyvinyl chloride pipe (PVC) is the darling of contemporary construction. It’s readily available, easy to cut, a breeze to handle, and it’s very inexpensive compared with copper piping – all of which makes working with PVC pipe relatively simple.
Gurgling noises can be very annoying and also can indicated a problem with your drains. One such source could be a sink or lavatory fixture originally installed with no vent connection to which a (sometimes permitted) local plumbing vent/vacuum breaker (such as a "V-200 plumbing vent) usually installed right under the sink to permit air to enter the plumbing drain line as needed but intended to keep sewer gases from exiting that same drain – a one-way valve. If the valve is defective or "stuck", inadequate, or improperly installed this problem may occur.
