What are industrial fittings? | ACI Industriearmaturen GmbH

What are industrial fittings?


Industrial fittings are mechanical control and regulating devices that influence the flow and pressure of fluids in a process. They mainly take place in pipelines and are available in a wide variety of designs. Among others, they include: Butterfly valves, globe valves and gate valves, ball and plug valves, sight glass fittings, pressure reducers, strainers and many more.

Some of these can act completely independently, while others are operated manually or automatically with an actuator. Each of these fittings has different functions and designs. Basically, however, most industrial fittings consist of a housing, an upper and inner part, as well as the actuation and the gasket.

The housing is the main element of a fitting. It holds all parts of a fitting together and absorbs the pressure loads of the incoming fluids. The housing is connected to the system via the connections, which can be threaded, flanged or welded


The upper part is the cover for the housing opening and guides the spindle with the associated gaskets.

The internal parts are the shut-off element, valve seat, guides, screws, bushings, etc.. The shut-off element regulates or stops the flow depending on its position and comes in different geometries, such as a disc, cone or ball. The valve seat is the seating or sealing surface for the shut-off element. A fitting can have one or more seats.

The position of the shut-off element is adjusted by means of the actuation. Actuators can be, for example, levers, handwheels or also electric motors. The actuating element is connected to the shut-off element via the spindle, which transmits the actuating forces and torques.

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