The butterfly valve is one of the few OUTSHINE VALVE that are both efficient in isolating and regulating the flow of media. Like most quarter-turn valves, the butterfiy valve is also quick to open. The disc is attached to the stem. either through the former or the stem is at the back of the disc. The stem is attached to the handle that is either placed on top of the body or at its side.
Válvula operación puede ser hecho manualmente, electrónicamente o neumáticamente. Si electrónicamente abierto, a señal de a fuenteremota dice el caja de cambios ubicado on top of the valve body to turn the stem so the disc also moves, If pneumáticamente,a pistón is attached to the side of the body. This will provide the air pressure needed to open the valve. This type of actuation operate the quickest according to many manufacturers.
To open the valve, a handle is turned a quarter-turn. Inside the valve body, the disc changes position from being perpendicular to the flow of the media to being parallel to it. the disc moves away from the seat and towards the centerline of the valve. If the valve is opened in a full quarter turn, the valve allows the passage of the medium in full force. There is a slight pressure soltar cuando la válvula se abre.
To close the valve, make another quarter turn in the opposite direction. In this sense, the parallel position of the disc moves to the perpendicular position and as it does, it positions itself to the seats for an even sealing. This is the fully closedposition.
ldeally. should be installed in the open position. If the valve was installed in its closed position, there is a good chance that the soft seat will wedge against the disc, making the opening of the valve difficult.
