Water Valve Flow Direction

If the valve is put in backward the flow will force the gasket away from the top of the valve.

Water valve flow direction. Check valves also called non return or one way valves are designed to allow flow in only one direction and to automatically prevent or check back flow if the fluid in the line reverses direction. A valve is a device or natural object that regulates directs or controls the flow of a fluid gases liquids fluidized solids or slurries by opening closing or partially obstructing various passageways valves are technically fittings but are usually discussed as a separate category in an open valve fluid flows in a direction from higher pressure to lower pressure. Check valves tend to be small simple and inexpensive and are often used for backflow prevention in pumps safety applications and such. That way water flows against the bottom of the rubber gasket.

It s important to orient the valve in the right direction with the arrow cast into the side of the valve aligned with flow direction. If there s no existing valves and no clearance issue then the most common convention is to have the handle point in the direction of flow. The flow pattern through a globe valve involves changes in direction resulting in greater resistance to flow causing high pressure drop. There are probably regional and or industry specific variations to this but as far as north american potable water goes this is it.

Most types are not operational and therefore do not have control handles.