Axial Flow Check Valve Description

‌Axial flow check valves‌, designed in accordance with ‌API 6D‌ and ‌ASME B16.34‌, are high-performance check valves widely used in pipeline systems to prevent liquid backflow hazards and protect mechanical equipment. They not only retain the functional characteristics of conventional check valves but also mitigate water hammer effects, reduce noise, minimize pressure drop, and enable rapid response.

These valves feature an ‌axial-symmetric structure‌ and ‌streamlined flow path‌, resulting in extremely low pressure loss and zero leakage. Additionally, they offer ‌impact-free opening/closing‌, ‌maintenance-free operation‌, and ‌simple installation‌, making them suitable for various gas and liquid media.

Structural Features‌

The ‌axial flow check valve‌ primarily consists of a ‌valve body‌, ‌bonnet‌, ‌disc (or flap)‌, and ‌spring‌. The ‌valve body‌ serves as the main component, internally equipped with a ‌flow guide channel‌ and ‌valve seat‌ to direct fluid flow. The ‌disc‌ of this valve is designed with minimal mass, reducing friction on the guiding surfaces and enabling rapid reseating. Due to its ‌low inertia‌, the disc travels a short distance and contacts the valve seat with minimal impact force, thereby preventing damage to the sealing surface and avoiding leakage.