# What is Valve CV rating?

## What is Valve CV rating?

The Cv rating for each valve is listed in the tables found in the valve catalog. The definition of Cv is the # of gallons of water that will flow through the valve with a 1 PSI pressure differential when the valve is open. The equations below can be used to determine: Flow Rate, given the Cv and ΔP.

What is the unit of flow rate?

Volumetric flow rate is sometimes measured in “standard cubic centimeters per minute” (abbreviation sccm), a unit acceptable for use with SI except that the additional information attached to the unit symbol. The SI standard would be m3/s (with any appropriate prefix, with temperature and pressure specified).

### How do you solve flow rate problems?

3:46Suggested clip · 118 secondsHow to solve flow rate calculations problems – YouTubeYouTubeStart of suggested clipEnd of suggested clip

How do you calculate GTT?

Example of calculating gtts/min:Order: 1000 mLof D5/W to infuse 130 mL /hr.Drop factor of tubing is 20 gtts = 1 mL.Formula:mL/hr X drop factor = gtt/min.60 minutes.130mL/hr x 20 gtt/min = 2600 = 43 gtt/min.

## What is GTT per minute?

The flow rate is calculated by the nurse in drops per minute (gtts/min). To calculate this, one must know the administration set drop factor, which is a constant. Macrodrip tubing administers a larger drop and may be used for 10 gtts/mL, 15 gtts/mL or 20 gtts/mL. Microdrip tubing administers 60 gtts/mL.

How do you convert GTT to mL?

1 drop = 0.05 mL. 1 mL = 20 drops. The symbol is “gtt”.