1 Water Meter Pressure Loss

Fittings head losses from all fittings and valves to the customer side of the meter domestic water meter and service run table lot no.

1 water meter pressure loss. Pz hgl res ht e meter elev. In this equation h l represents friction head loss meters of h2o l represents length of pipe meters d represents internal pipe diameter meters q represents flow rate through the pipe cubic meters per second and c represents the hazen williams coefficient which will vary according to how smooth the internal surfaces of the pipe are. 4 1 sr 2 30 1 2 15 9 71 2 11 0 30 1 1 11 4 sr 3 50 3 4 25 103 4 10 9 50 11 2 sr 5 100 11 2 50 125 8 13 11 4 100 2 sr 8 160 2 80 151 4 17 12 1 160 meter size normal operating flow range gpm low flow accuracy 95 minimum gpm laying length inches pressure loss psi gpm 2 2 160 1. We are using 1 2 inch pipe.

The equation presupposes a fluid that has a. Static pressure at meter psi fire sprinkler demand pressu re gpm max psi min domestic water. 150 17 3 5 1 1 8 160 20 0 5 8 2 1 170 6 5 2 4 180 7 2 2 7 190 8 0 3 0 200 9 0 3 2 220 11 0 3 9 240 13 0 4 7 260 15 0 5 5 280 17 3 6 3 300 20 0 7 2 350 10 0 400 13 0 450 16 2 500 20 0 pressure loss through water meters psi flow gpm nominal size. Find your meter size below then use your initial design flow from your design data form to find the psi loss.

Calculations are possible only if javascript is activated in your browser. Equations displayed for easy reference. 12 5 2007 11 17 43 am. Pressure drop online calculator for small mobiles.

Includes 53 different calculations. Enter the psi loss from the table below on the water meter line of the pressure loss table. This will be true of all your psi losses in the pressure loss table that are based on flow. Example water flow through a hose and pressure loss.

Pressure loss through water meters. Pressure drop online calculator calculation of pressure drops of flowing liquids and gases in pipes and pipe elements laminar and turbulent flow. If you don t have a water meter just enter 0 on the table. Toilet flow 2 5 gpm shower flow 2 5 gpm total flow 5 gpm.

Let s calculate what will happen to the pressure if we flush a toilet while a shower is running in a bathroom 100 feet away from where the water enters the house. Online calculator to quickly determine pressure loss through piping for water. The pressure drop in the hose can be calculated as 5 psi 100 ft 80 ft 100 ft 4 psi 0 28 bar. Service line head loss based on the proposed service line size c.

If you modify the initial design flow later you should come back and change the water meter flow sensor psi loss values as well. From the diagram above the pressure loss per 100 feet can be estimated to 5 psi. Meter head loss based on the proposed meter b.