What are the sizes of ball valves?
Full port bore sizes are the same as the inner diameters of both the valve ports and the pipe used. Standard port bore size is about the same as the next smaller pipe size. The bore in a 3/4-inch size full bore ball valve is 3/4-inch in diameter. The bore in a 3/4-inch size standard bore ball valve is 1/2-inch.
What does 150 SWP mean on a ball valve?
Both IPS and CXC valves are rated at 600 PSI non-shock CWP (Cold Water Pressure) and 150 PSI SWP (Steam Working Pressure). Matco-Norca supplies a full range of ball valves for plumbing applications.
Are ball valves full bore?
A full port or sometimes called full bore, ball valve has a straight flow path where there is not a reduction of flow as it travels through the valve. In other words, the internal diameter of the pipe or tubing at the inlet and outlet of the valve has the same diameter as the interior of the ball valve.
What is valve port diameter?
Full port: The valve port is the same diameter as the pipe. Standard port: The valve port is smaller than the pipe’s diameter. Exact port size varies but generally the port size is that of one pipe size smaller than the valve in question.
What is standard port ball valve?
Ball valve ports come in standard or full sizes. The difference can be summed up fairly simply: Full port: The valve port is the same diameter as the pipe. Standard port: The valve port is smaller than the pipe’s diameter.
How is valve Cv calculation?
The volume flow rate for liquids can be calculated by multiplying the fluid velocity times the flow area. Thus, Cv is numerically equal to the number of U.S. gallons of water at 60°F that will flow through the valve in one minute when the pressure differential across the valve is one pound per square inch.
How do you measure valve seat width?
Valve Seat Width Measurement Procedure Measure the valve seat width in the cylinder head using a proper scale. Measure the seat width on the valve face (1) using a proper scale. Note: The seat contact area must be at least 0.5 mm (0.020 in) from the outer diameter (margin) of the valve.
Do I need to specify the size of the ball valve?
In certain circumstances, you may be required to specify the size of the ball valve required, based on the current fittings on site. To assess the size of valve required, you need either of the following:
What is the construction of a ball valve?
The construction of the ball valve generally refers to the number of pieces that are put together to make the ball valve. In a one-piece ball valve the connection ends are manufactured as a single solid piece and the ball is added from the top or the bottom of the valve.
What are the different types of ball valve port sizes?
There are different types of port sizes when it comes to ball valves: standard, reduced, and full port. In a full port ball valve, there is no restriction to the flow through the valve because the opening in the ball is close to the same size as the pipe. The opening must meet the minimum diameter laid out in IAPMO IGC 157-2009.
When is a ball valve open and closed?
It is open when the ball’s hole is in line with the flow and closed when it is pivoted 90-degrees by the valve handle.