Are there clamp-type check valves?
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Are there clamp-type check valves, and what are their features? What occasion is it for?
API 594 specifies swing, lug-type, and double-flange check valves. Structural features of wafer check valves: 1. Short structural length – it is only 1/4 to 1/8 of that of traditional flanged check valves. 2. Small size and light weight – its weight is only 1/4 to 1/20 of that of traditional flanged check valves. 3. The valve disc closes quickly, resulting in low water hammer pressure. 4. Can be used in both horizontal and vertical pipelines, making installation convenient. 5. Smooth flow path with low fluid resistance. 6. Sensitive operation and good sealing performance. 7. Short valve disc travel, resulting in low closing impact force. 8. Simple and compact overall structure with an attractive design. Applications: Check valves are installed in piping systems; their main function is to prevent backflow of the medium. They are automatic valves that open and close based on the pressure of the medium. Wafer-type check valves are suitable for use in various pipelines to prevent the backflow of fluid. By selecting different materials, it can be used in various media such as water, steam, oils, nitric acid, acetic acid, highly oxidizing agents, and uric acid. Due to the lack of flange surfaces and the extended length of the bolts, these bolts are prone to failure and leakage when used in pipelines under high pressure and high temperature conditions, as well as in pipelines subject to pulsations. Generally used in low-pressure applications at temperatures below 300 degrees
This post was last edited by ylb913 on 2017-1-6 at 11:56. For swing check valves, most types are characterized by a short structural length, which requires less installation space. It is more commonly used in low-pressure environments, but there are also types for high-pressure use (the one with bolts in the diagram is clearly designed for high-pressure applications).
Wafer check valves take up little space, are easy to install, and are inexpensive.
High accuracy is required for the installation of the flanges at both ends.
For air supply in the ash transfer pipelines, wafer-type check valves are used; these valves are inexpensive and offer good cost-performance. Feel free to reach out to me if you have any other questions
I have used it, but it depends on the situation; in some important occasions, it was identified as a potential source of leaks and required correction...