A few questions about check valves?
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Who has information on check valves? Why are there two check valves in sequence on one pipeline? What is a soft-seat check valve? This post was last edited by leefun on 2009-4-16 08:49]
Install 2 check valves on the same pipeline at once? I’ve never seen it in person either; I’d like to know. Could any expert please come and answer this question? Thank you
This post was last edited by cswenhan on 2009-5-15 06:44. A check valve is essentially a one-way valve; installing two such valves in sequence on a pipeline serves as a safety measure – if the first check valve fails, the second one will ensure that the fluid can flow back in the opposite direction. A soft-seat check valve is one in which the sealing material of the valve seat is made of rubber or tetrafluoroethylene, among other materials
Having two check valves in sequence on a pipeline is done for safety reasons: this arrangement is typically used on pipelines with a large pressure difference, such as at the outlet of the feed pump for hydrogenation reactions
This post was last edited by cswenhan on 2009-5-15 06:47. Hehe, what if the directions of the two check valves are opposite to each other?
Opposite in 2 directions? How is that possible? I have a question. . .
What is the fundamental difference between a check valve and a one-way valve? ! May I ask?
Reply: “What if the directions of the two check valves are opposite?” ” There are two pump outlet pipelines, installed in opposite positions.
It should be a permanently enabled, commonly used option that serves as a backup, thereby enabling more effective control of the process
The HGT 20570 specification states that \"when the pipeline pressure is greater than 4 MPa, two check valves must be used.\" ”