25
2025
-
07
Material and corrosion resistance of marine stop valves
Marine stop valves are valve devices specifically manufactured for ships. They are made of corrosion-resistant materials such as stainless steel, brass, and cast steel, and have two flange connection structures: straight-through (A/AS) and right-angle (B/BS). This product integrates both shut-off and check valve functions, and can operate stably under pressure environments of 1.0-6.4 MPa, adapting to various media such as freshwater, lubricating oil, fuel oil, and steam at 300-400℃. Through innovative protective components and optimized sealing structures, it solves the technical challenges of susceptibility to seawater corrosion and mechanical impact in marine environments.
The valve body mainly uses ZG275-485 cast steel, 20Cr13 stainless steel, and aluminum bronze valve stems. Some models use titanium alloy valve seats and PTFE sealing rings to enhance resistance to seawater corrosion. Patent technology, through the setting of a downwardly inclined conical surface structure on the valve seat contact surface, increases the sealing surface width to 1.5 times that of traditional designs. Coupled with a bellows-type stem sealing structure, this achieves zero leakage after 3000 opening and closing tests.
Structure and function of marine stop valves
2025-07-25
Service suitability of marine stop valves
2025-07-25
The working principle of a check valve
2025-07-25
The working principle of a gate valve
2025-07-25
Integrating product research and development, manufacturing, and sales, specializing in the production of various marine valves
Qingdao Qingfa Chuanbo Shebei Zhizao
Add: Qingdao City, Jimo District, Qingdao City, Jimo District S503
Manager Cao:+86-15020079366
Email:sales@qdqingfa.com
Powered by www.300.cn | SEO | Privacy Policy