Media diversity
Marine valves need to control the flow of various fluid media, including seawater, fresh water, fuel oil, lubricating oil, steam, etc. Different media have different physical and chemical properties, which put forward different requirements for the material and performance of valves. For example, seawater has strong corrosiveness, requiring valve materials to have good corrosion resistance; Fuel requires valves to have good sealing performance to prevent leakage.
Significant changes in pressure and temperature
During the navigation process, ships will experience different working conditions and environmental conditions, resulting in changes in the pressure and temperature that valves are subjected to. For example, valves may experience significant pressure shocks during ship start-up and shutdown; In high-temperature steam systems, valves need to be able to withstand higher temperatures. Therefore, marine valves need to have good pressure and heat resistance to adapt to changes in pressure and temperature.
Frequent vibration and impact
During the navigation process, ships are affected by factors such as waves and engine vibrations, resulting in frequent vibrations and impacts on valves. This vibration and impact may affect the sealing performance and service life of the valve. Therefore, marine valves need to have good seismic and impact resistance to ensure normal operation in vibration and impact environments.
Space and weight limitations
The space and weight resources of ships are limited, so ship valves need to have a compact structure and lighter weight. For example, butterfly valves have the characteristics of simple structure, small volume, and light weight, and are widely used in large-diameter seawater cooling systems, ventilation systems, and other applications on ships.
High reliability and safety requirements
The reliability and safety of marine valves are directly related to the normal operation of ships and the safety of personnel. During ship navigation, if valves malfunction, it may lead to fluid leakage, system failure, and even safety accidents. Therefore, marine valves need to have high reliability and safety, undergo strict quality testing and verification to ensure stable and reliable operation in various harsh environments.
