Selection of check valves
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The check valve is installed between the slurry pump and the grout injector. The head of the slurry pump is 12.6–61.0 m, and the pressure of the grouting unit is 25 MPa. What type of check valve should be used in this system?
I think a slow-closing type check valve should be used.
A swing-type one should be used, in my humble opinion.
A spherical check valve should be used. The body of the spherical check valve features a full-flow channel structure, offering the advantages of high flow rate and low resistance. Ball valves are used as the valve disc, making them suitable for fluids with high viscosity and suspended solids. The models include HQ11X-1.0, HQ41X-1.6, etc.