Diagram Floor Drain

When you look at an installed floor drain all that you typically see is the grill on top.

Diagram floor drain.

Sufficient top size and grate free area to pass the anticipated flow are required. Also notice the drain is centered right in the middle of this 30 inch vanity. Floor and area drains floor drain selection factors pipe connection no hub standard butt connection using no hub or neoprene coupling suitable for cast iron plastic and most other piping applications. Floor drains are primarily used for inside locations where the flow rate into the drain can be anticipated.

40 plastic and steel pipe. The shaded portion shows the trap where water will always sit which prevents sewer gas from coming in. Suitable for no hub or service weight cast iron sch. Floor drains are no exception.

The photo at right shows a floor drain as viewed from the side. This diagram of a typical dwv system is called a plumbing tree. Water runs down the sink drain into a p trap so called because it s shaped like the letter which fills up with water to prevent sewer gases and odors from getting into the house through the pipe. The rest of the drain is always buried in the basement.

The center of the lav s drain is located 18 approximately above the finished floor. Immediately beneath a sink bathtub or other plumbing fixture the fixture drain opening leads to a curved segment of pipe known as the p trap which is normally a 1 1 4 to 2 inch diameter segment of pipe with a sharp curved bend in it shaped like the letter p. The purpose of this drain trap is to hold standing water which seals the drain system and prevents sewer gases from. This water gets refreshed whenever more water runs through it.