The valve core of B-HVH black water valve adopts the upper guide structure, the valve body flow passage is a spherical cavity structure with an inclined plane, and the valve seat design follows the Venturi acceleration principle. The valve core and valve seat are made of spray welding or integrally sintered hard alloy to achieve the anti-scouring and wear-resistant effects. The product has the characteristics of anti-stacking, anti-erosion, large flow capacity and wide adjustable range.

The size of the diffusion section can be determined according to the requirements of the design Institute and the user, and the size of the relevant flow channel and the diffusion angle can be determined by using CFD software for flow field analysis and relevant tests; The contact part between the inner cavity of the valve body and the medium adopts special hardening treatment measures to resist the strong erosion of the medium and prolong the overall service life of the valve; The hard alloy core seat adopts a special treatment method to refine grains and enhance the erosion resistance. It is mainly suitable for controlling multiphase fluid containing hard particles, such as coal slurry water, etc. The regulating valve is equipped with diaphragm and cylinder piston actuator, which is compact in structure and large in output force.

The product conforms to GB/T4213-2008 and JB/T7387-94 standards.