Valve World Asia Shanghai Station

Cryogenic valves are typically used to handle extremely low temperatures and often high pressures, such as liquefied natural gas, liquid oxygen, and liquid hydrogen. Cryogenic valve testing is a crucial step in ensuring their safe, reliable, and efficient operation under extreme conditions. In actual production, we sometimes encounter situations where rigorously tested cryogenic valves leak as soon as they are warmed up. Is this due to insufficient testing? Of course not.

Valves are control components in fluid transportation systems, with functions such as shutting off, regulating, diverting flow, preventing backflow, stabilizing pressure, branching, or relieving overflow. In general, most valves close clockwise and open counterclockwise, or you could say left to open, right to close. Let’s first go over some basic valve operation knowledge: since most people are right-handed, it’s easier to turn clockwise than counterclockwise with the right hand. So, from both energy-saving and safety perspectives, opening counterclockwise and closing clockwise is relatively more reasonable.

The flow rate and velocity of a valve mainly depend on the valve diameter, are also related to the resistance of the valve’s structure to the medium, and are intrinsically related to factors such as valve pressure, temperature, and medium concentration.What exactly is the relationship between the two?