Table of Contents
What does CWP mean on ball valve?
Cold working pressure
CWP & WOG Ratings Cold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20°F to 100°F. This is commonly referenced alongside the valve’s pressure rating. For example, 720 CWP indicates the valve is rated to 720 PSI within the CWP temperature range.
What does PSI CWP stand for?
Cold Working Pressure
CWP stands for Cold Working Pressure and is an indication of the pressure rating for valves at a temperature up to 100°F. The number represents the pressure rating, ie a 600 with CWP under it would mean the valve is rated to 600 PSI CWP.
What does 150 PSI WSP mean?
steam pressure
WSP stands for water steam pressure or working steam pressure. It reflects the rating for the valve at water steam temperature. A valve rated at 600WOG/150WSP should be able to withstand 600 psi in a water or gas pipe and 150 psi if used in a steam supply system.
What do the different color handles on ball valves mean?
It means nothing really, We have used red for hot and blue for cold, However, do not take that as the norm, MOST of the time it is just the decision of the plumber or the manufacturer as to the color of the handle.
What are the normal flange ratings of ANSI valves?
ANSI FLANGE PRESSURE RATING EXPLAINED According to the ANSI/ASME B16. 5 specification, there are seven flange pressure ratings: 150, 300, 400, 600, 900, 1500, and 2500.
How do you calculate pressure rating?
It is helpful in determining the maximum pressure capacity a pipe can safely withstand. The formula is expressed as P=2St/D, where: P….Barlow’s Formula Calculator.
| ATTRIBUTES | VALUE |
|---|---|
| P = Pressure | psig |
| t = Nominal Wall Thickness | inches |
| D = Outside Diameter | inches |
| S = Allowable Stress | psi. |
Do ball valves reduce water pressure?
A ball valve only controls flow and not pressure. A ball valve can be used to limit the pressure after water is flowing. A ball valve requires less plumbing than a pressure Regulator. The maximum pressure won’t be reached until the set point is reached.
Which way should a ball valve face?
VALVE ORIENTATION: Installation upside down is not recommended because it can cause dirt to accumulate by the stem packing. The best practice is to install with the valve stem facing upwards whenever possible.
What does CWP stand for on a valve?
CWP stands for Cold Working Pressure and is an indication of the pressure rating for valves at a temperature up to 100°F. This is becoming a more common rating, as the WOG rating has a more complicated description.
What does CWP mean for cold working pressure?
The CWP rating means Cold Working Pressure, i.e. below 38C and is in psi. Hence temperatures above this you need to check with the vendor. These tend to be instrument systems and hydraulics where having a high rating costs pennies more than a lower rated valve, but pressures of 3-5,000 psi are not uncommon.
What does the PSI on a ball valve mean?
A ball valve’s PSI measures the pressure of the media that flows through the valve as it comes in contact with a square inch of pipe or other fittings. Cold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20°F to 100°F.
Which is the correct rating for a ball valve?
Ball Valve Ratings 1 PSI Rating. Pounds per square inch (PSI) is a measurement of pressure that is commonly used in the U.S. 2 CWP & WOG Ratings. Cold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20°F to 100°F. 3 WSP Rating. 4 Gas Ratings.