Quick Answer: How To Install Dual 600 Need To Kitchen Sink Drain?

Does double sink with disposal need two P traps?

Speaking from personal experience, only use one trap in a dual sink bathroom. With two traps, you can get air pockets blocking one or the other’s drain. Normally, these double tees are used for adjoining bathrooms, so you can have a sink on each side of the wall, and share the same stack.

What size is the kitchen drain pipe?

Kitchen drains and drain lines are sized for functionality. All kitchen sinks today have the same diameter drain, which is 3 1/2 inches and is larger than a bathroom drain which measures in at 1 1/4 inches. It is the same size as a typical standard shower drain, however.

Does kitchen sink need a vent?

A plumbing fixture like a sink can not function properly without a sink vent. A sink needs a vent because the pressure put on the drain pipe when water flows down the drain pipe needs to equalize. The air needs to escape the drain pipe in order for the sink to vent.

What happens if you have 2 P traps?

The double trap causes drainage issues because air becomes trapped between the two traps, and air is lighter than water. That causes the air to travel up as the water flows down, resulting in NO DRAINAGE. That is why you vent a drain after the first trap if there is another trap or the potential of another trap.

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Does each sink need its own P trap?

Having said that, any plumbing fixture directly connected to the sanitary drainage system must be equipped with a water seal trap. That means every single plumbing fixture used to evacuate waste from a building should have its own plumbing trap.

Does AP trap have to be directly under the drain?

The “P” trap SHOULD be directly under the drain, but no more than a few inches off center of it, if conditions require it. NO trap, TWO traps, and/or a 9 foot offset are NOT allowed and if he suggests any of them get a different installer who is a REAL plumber.

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