- What is the value of flow coefficient Kv? What is the flow coefficient Cv?
Volumetric flow of water flowing between 5 ° C (40 ° F) and 40 ° C (104 ° F) through the valve to produce a pressure loss of 1 bar (14.7 psi), expressed in cubic meters per hour.
Kv = Cv / 1.156
Flow coefficient Cv: It is the mass flow rate when water flows through the valve at 15.6 ° C (60 ° F) to produce 1psi, expressed in gallons per minute. - What is a pressure bearing?
Design parts that can withstand the pressure of pipeline media, such as valve body, bonnet, packing gland, valve stem, gasket and stud. - What is a pressure control part?
Refers to those parts used to prevent or allow the flow of media, such as valve seats, balls, discs, gates, discs and other seals. - What is ferritic stainless steel? What is austenitic stainless steel? What is the difference between the applicable media?
The solid-solution solid-centered cubic lattice of carbon in α-iron in stainless steel is ferritic stainless steel; the solid solution of carbon in γ-iron forms face-centered cubic lattice is austenitic stainless steel.
Ferritic stainless steel is suitable for corrosive media such as acetic acid and lactic acid; austenitic stainless steel is suitable for corrosive media such as nitric acid, sulfuric acid and acetic acid.