This is a highly practical and reliable calculator which can be simply used for calculating the volume flow rate of a fluid which also is defined as volume of fluid that is passing through a given cross sectional area per unit time. The term cross sectional area is often used to describe the area through which something is flowing.
Here you can find tables with the approximate water flow in a pipe by size.
The recommended maximum velocity for water flow in residential areas is typically 8 feet per second (8 ft/s). This recommendation is based on various factors, including the need to minimize pipe erosion, reduce noise from flowing water, and avoid potential pressure drops that can occur at higher flow velocities.
Residential Reverse Osmosis
GR/O Reverse Osmosis System 75 GPD, 3.2 Gal Tank, Faucet.
UV and Ozone Water Purification
Ozone Generator JED 103 (120V, 240V, 12V)
Home & Office Water Coolers
Vertex PWC-9501: 3-temp cooler offers cold, hot and room water with reliable capacitive touch dispensing.
Parts
Amtrol RO Tank 4.4 Gal Steel 141S351 / 141S352 White / Blue
Home & Office Water Coolers
Vertex PWC-9100 Hot & Cold Floor standing Bottleless water cooler