Flange Check Valve H44 Series is the latest developed valve, mainly used in petroleum, chemical, food, pharmaceutical, textile, paper, water, smelting and energy systems as a check valve used for prevent backflow of media and destructive sources. 1. Small size, light weight, compact structure, easy maintenance. 2. Slow closing device design, compact structure, stable and reliable performance of the Department and is located in the pipeline to avoid the contaminated medium. 3. Smooth running, no vibration, no noise. www.yyfm168.com 4. Characteristics of a good opening and closing the valve opening pressure ≤ 0.03MPa. Turned quickly, close the valve with adjustable, two-stage speed off mode, slow closing time adjustment range, suitable for different working conditions