A swing check valve typically features a globe-style body with a hinged disc designed to halt reverse flow. The valve seat is commonly configured in either an angled or straight-through full-ported design. ACEV Flow Control provides a diverse range of swing check valves tailored for various applications, encompassing water, steam, oil, nitric acid, acetic acid, solid oxidizing media, and other corrosive substances.

The swing check valve comprises a body, seat, and disc connected via a hinge. When the flow reaches a specific rate, the disc rotates to a horizontal position, facilitating forward flow. Upon cessation of flow, the disc returns to its seated position to prevent backflow.

Swing check valve operation primarily relies on gravity (disc weight) and reverse flow. The pivot point of the swing check is positioned outside the disc's periphery, and the valve's closing force intensifies with increasing flow velocity and head pressure. To mitigate disc slamming and reduce hydraulic shocks, an external hinge arm, equipped with either a lever weight or an adjustable spring, is available.

Swing check valves can be broadly classified into two major types: top-hinged and tilting disc. Both types can further be divided based on their body construction—either forged or cast. Despite sharing similar operational procedures, the primary distinction lies in the deployment mechanism of the valve disc.

Forged swing check valves are typically smaller, usually not exceeding 4" in size. Conversely, cast swing check valves are more common for larger sizes, starting from 2" and upwards. ACEV Flow Control has the capability to manufacture swing check valves with a maximum size of 48".