Valve Modeling Closures with K Factors

A closed valve would have an infinite K-factor. Since infinity is not a possible input, AFT Fathom uses the convention of K = -1 (negative one) to represent a closed valve.

This input is only valid when defining a valve transient while using the Fathom XTS Module. To represent a valve that is closed in steady state, use the valve Special Conditions in the Optional tab.

Related Topics

K Factor Loss Model

Bend Loss Model

Area Change Loss Model

Orifice Loss Model

Screen Loss Model

Tee/Wye Loss Model

Valve

Related Blogs

That Valve's Got Character - Applying Pre-defined Characteristic Curves

XTS Module
Extended Time Simulation Module
An optional add-on module to AFT Fathom which allows users to simulate system transient behavior.