Double-flap rotary check valve is composed of valve body, valve flap, valve stem and spring and other parts. The valve flap is two semicircles, and spring reset, the sealing surface can be the body surfacing material or rubber lining, the use of butt-clamp connection, compact structure. Due to the short closing stroke of the valve flap and spring loading, the closing speed is fast, which can reduce the water hammer phenomenon. Double-flap swing-open butt-clamp check valve can be installed horizontally or vertically, and can be applied to a variety of fluid media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media.

Double-flap rotary check valve is aimed at the traditional use of rotary check valve has a larger volume, the valve closes when the water hammer pressure is higher, the installation size is large and other issues. Double-flap rotary check valve has a short structural length, small size, light weight, fast valve closing, water hammer pressure, easy installation, sensitive action, good sealing performance, short valve stroke, the overall structure is simple and compact and so on.

Flange double-flap swing check valve product features: 1, short structure length, its structure length is only 1/4 ~ 1/8 of the flange check valve; 2, small size, light weight, its weight is only 1/4 ~ 1/20 of the flange check valve; 3, the valve flap closes quickly, water hammer is small; 4, the horizontal pipeline or vertical pipeline can be used, easy to install; 5, the flow channel is fluent, the fluid resistance is small; 6, the action of the sensitive sealing performance is good; 7, the valve flap stroke is short, the overall structure is simple and compact features. Good performance; 7, the valve flap stroke is short, the impact of closing the valve is small; 8, the overall structure, simple and compact, beautiful modeling; 9, long service life.