A question about check valves
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Our company has many wafer-type safety valves, in which the valve disc is supported by springs. Are there any standards for these springs? After being replaced one year ago, when they were placed on the ground, the valve discs drooped to the ground due to the softness of the springs. Is this acceptable?
Do you mean the clamped type by ordinary spring-loaded safety valve? The spring-type version cannot be placed in a folded position.
I guess many people are involved in these exchanges at various large refineries: lol
We are all here to work; everyone is welcome to exchange ideas and learn together*
Are there any specification requirements for the spring of this check valve?
JB T 8937-1999: Standard for wafer-type check valves. I took a look just now; it seems that only certain requirements are specified regarding the material, while its reliability needs to be verified regularly to ensure its sealing properties
I’m curious whether you’re in a workshop or a department? Song Tuanguang, Kang Chonglu, Wang Yuguo, Cao Zhenqiang – which one do you know?
The wafer check valve cannot be used when the spring is out of stress.
When the spring loses its stress, it cannot be guaranteed that the valve disc will return to its original position. After all, this is a Chinese-language communication area on a Chinese forum; it’s recommended to use language that everyone can understand. Thank you for your cooperation!