Blog_Qingdao Qingfa Ship Equipment

Material and corrosion resistance of marine stop valves

The valve body mainly uses ZG275-485 cast steel, 20Cr13 stainless steel and aluminum bronze valve stems.

2025

Structure and function of marine stop valves

Straight-through (A/AS) valves use a horizontal flow path design, while right-angle (B/BS) valves use a 90° turning flow path.

2025

Service suitability of marine stop valves

Marine stop valves are valve devices specifically manufactured for ships.

2025

The working principle of a check valve

Check valves can also be used in pipelines that supply auxiliary systems where the pressure may rise above the system pressure.

2025

Installation methods and precautions for check valves

The disc-shaped valve disc of a swing check valve rotates around the valve seat passage.

2025

The working principle of a gate valve

The gate valve's closing member is a gate plate. The gate plate moves perpendicular to the fluid flow direction.

2025

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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

Business license

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