QRC Valves

February 2021

Class Seat Leakage

Class Seat Leakage HYDRO TESTING – CLASS I to IVCLASS SEAT LEAKAGE The term “Class” seat leakage comes from ANSI / FCI 70-2. This is a control valve seat leakage specification and does not apply to gates and globes used for on/off service. In ANSI / FCI 70-2, the forward states, “During the canvas of the […]

Class Seat Leakage Read More »

Scroll to Top