Water Meter Size Vs Pipe Size

About 18 f s flow velocity.

Water meter size vs pipe size. It is fairly common for the meter to be one size smaller than the feed pipe to the house. Assume gravity to low pressure. Water supply fixture units wsfu and minimum fixture branch pipe sizes. Size water line tips.

Appliances appurtenances and fixtures not referenced in the table below shall be permitted to be sized by reference to fixtures having a similar flow rate and frequency of use. About 6 f s flow velocity also suction side of pump. A standard meter coupling for a 5 8 water meter has male npt pipe threads on one end and a swivel meter coupling nut with 1 2 awwa meter threads on the other. Assume average pressure 20 100psi.

Water flow gpm gph based on pipe size and inside outside diameters. A larger meter size than what is required could mean that a residential customer will pay less each billing period and the utility profits would be undermined. The listed fixture unit values represent their load on the cold water building supply. Water line size determines the amount of water flowing from a pipe.

Typical water meter sizes are. The pipe is 12 feet long and the difference in height between the beginning and end points of the pipe is equal to 3 feet. 5 8 meters are generally used on older homes where the service tubing size was 1 2. Let s use the pipe flow calculator to determine the velocity and discharge of a plastic pipe 0 5 feet in diameter.

The other option which is far from accurate but is safe for design is to determine the size of the pipe leaving the meter and assume the meter is one size smaller. Larger diameter water lines create less friction. 5 for fixtures or supply connections likely to impose continuous flow demands determine the required flow in gallons per minute gpm l s and add it separately to the demand in gpm l s for the distribution system or portions thereof. Guidelines for service line and meter capacities service flows from dwd internal study of various code capacities meter flows from awwa manual m 22 updated 6 11 10 tap meter service sizing maximum rated velocity is 10 ft sec diameter maximum flow high normal meter flows 3 associated bfp diameter 10 ft sec velocity 10 ft sec 1 2 meter type.

Assume high pressure peak flow. Bigger is better if you want lots of water in a short time. These use meter couplings and gaskets referred to interchangeably as 5 8 or 1 2. 1 inch pipe less than 100 feet to a house is good.

5 8 3 4 1 1 1 2. Divide the diameter by 2 to find the radius of the pipe. 4 the listed minimum supply branch pipe sizes for individual fixtures are the nominal i d pipe size. About 12 f s flow velocity.

8 inch diameter water main supplies.