Dual plate check valve is used for clean pipelines, industrial, environmental protection, water treatment, high-rise building drainage pipelines to prevent the reverse flow of media. According to connection type, The check valve have dual plate wafer check valve, dual plate lug check valve, and flanged end type. The valve disc is two semicircles and is forcedly reset by springs, the sealing surface can be welded with wear-resistant material or rubber lining. It has a wide range of use and reliable sealing.
How does dual plate check valve work
The dual plate check valve is mainly composed of valve body, disc, torsion spring, and stem. When the medium flows in the forward direction, the medium pressure overcomes the elastic force of the torsion spring, and the valve disc rotates to open; when the medium flows in the reverse direction, the valve disc closes under the combined action of the reverse medium and the elastic force of the torsion spring.
Features of dual plate check valve
Due to the short closing stroke of the dual plate check valve disc and the spring loading, the closing speed is fast, which can significantly reduce the phenomenon of water hammer. The product has the characteristics of small size, lightweight, sensitive action, reliable sealing, easy installation, etc. It can be installed horizontally or vertically, and can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media and so on.
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