# How do you read a flow curve?

## How do you read a flow curve?

When reading left to right, flow is increasing. And the reverse is true when reading right to left. Depending on whether flow is increasing or decreasing, the curve will be slightly different. Outlet pressure will not follow the same droop line, nor end at the original set pressure.

## How do you calculate the flow rate of a regulator?

To determine the maximum flow through a regulator use either: – the seat orifice area formula, or – the nomograph. As long as there is a choked (critical) flow, (P1 = 2 x P2 at least), the flow which you will find on the nomograph is the maximum flow with the valve wide open.

## Does water pressure drop over distance?

Elevation can change your pressure both positively or negatively. To push water uphill it will require pressure and if water goes downhill then you will gain pressure. An easy calculation to know is that for every 10 feet of rise you lose -4.33 psi. For every 10 feet of fall in elevation, you will gain +4.33 psi.

## Do 90 degree bends reduce water pressure?

Yes, bends or elbows in pipes cause a reduction in the available pressure head at the discharge end of the pipe. Even running through a length of straight pipe reduces the available pressure head, which can be quite noticeable when using a long, small-diameter pipe.

## Do 90 degree fittings restrict air flow?

Turbulence is another way in which airflow is restricted. The main cause of turbulence is 90 degree elbows in ducts. When you use elbows with curved sides, there is less turbulence so choose your fittings with care.

## How much do 90 degree elbows affect water flow?

yes 90 degree bends restrict the flow, no matter if you are using high flow or low flow. If you cant avoid using bends, go to the hardware store and get some copper pipe bends, they have an easier more sloping bend to them then the acrylic ones.