Reduced Seated Valves and Fittings Calculator

Enter value and click on calculate. Result will be displayed.

`K=[K_R+K_1]/[β^4+K_E]`
K = K Value of the Total Valve
K1 = K Value of Reduced Seat
β = dvalve / dpipe
KR = K Value of Reducer
KE = K Value of Enlarger

Enter your values:

K Value of Reduced Seat:
K Value of Reducer:
K Value of Enlarger:
β :

Result:

K Value of the Total Valve:
Reduced Seated Valves and Fittings Calculator

Reduced seated valves are broken down into three sections: the reducer (contraction) section, the valve section, and the enlarger section.

A K value is determined for each section in relation to the size of the valve in the pipeline.

The total K value for the valve consists of K values for the reducer, the valve section, and the enlarger. Since the K value for the valve section is dependent on the valve seat diameter instead of the pipeline diameter, it must be adjusted by a correction factor to determine the correct K value for the diameter of the pipe.

The valve correction factor is the ratio of valve seat diameter divided by pipeline diameter (often called beta) raised to the fourth power.
x