SWING CHECK VALVE

摘要

A swing check valve with a combination of a flapper and a spring return mechanism is provided. The spring return mechanism includes a spring housing removeably coupled to a valve cover affixed to a valve body. The spring return mechanism also include at least two springs separated by a spring pivot guide for engaging the flapper to bias the flapper in the closed position against a valve seat.

主权项

1. A check valve, said check valve comprising:
a valve body, said valve body including a top opening, an inlet and an outlet and defining a flow path therebetween, the top opening configured to allow access to the main portion, said valve body further including a main portion and a valve seat defined in the main portion between the inlet and the outlet; a valve cover, said valve cover covering the top opening of said valve body and removeably attached to said valve body; a flapper, said flapper pivotably hinged within the main portion of said valve body between an open position to a closed position positioned against the valve seat; and a spring assembly, said spring assembly including a spring housing attached to said cover and a spring guide pivotably coupled to said flapper, said spring assembly further including a first spring positioned within the spring housing, a second spring extending between the spring guide and a spring pivot guide, the spring pivot guide positioned within the spring housing between the first spring and the second spring, wherein said flapper biased into the closed position by the spring assembly.