Valves play a vital role in modern production and daily life, serving everything from mild operating conditions to extreme industrial environments. Cryogenic valves are primarily used in applications such as ethylene plants, liquefied natural gas (LNG) facilities, natural gas/LPG/LNG storage tanks and receiving terminals, air separation units, and petrochemical tail-gas separation equipment. However, cryogenic media—such as ethylene, liquid […]
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 […]
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 […]
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? The flow channel area of a […]
What are the differences between valve materials? What exactly are “steel” and “iron,” what are their properties, and what is the relationship between them? Where do the terms 304, 304L, 316, and 316L come from, and what are the differences between them? Steel: A material with iron as its main element, generally containing less than […]
Valve Operating Temperature The operating temperature of a valve is determined by the material it is made of. The operating temperatures of commonly used valve materials are as follows: Valves Operating Temperature Gray cast iron valves -15~250°C Malleable cast iron valves -15~250°C Ductile cast iron valves -30~350°C High nickel cast iron valves Maximum operating temperature […]
