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What Is The Difference Between NRS and OS&Y Gate Valves
What Is an NRS Gate Valve NRS (Non-Rising Stem) gate valves have a stem that rotates in place when operated—the stem does not move up or down externally as the valve is opened or closed. Key Features: ①The stem threads are inside the valve body, in contact with the fluid. ②Compact design—ideal f...Read more -
How To Replace Disc Check Valve
A disc check valve (also called a non-return valve or silent check valve) is designed to allow fluid to flow in one direction and prevent backflow. These valves are commonly used in marine systems, HVAC pipelines, steam lines, and water treatment plants. Over time, wear and tear can affect perfor...Read more -
What Are The Types of Globe Valves
What Is a Globe Valve A globe valve controls flow using a movable disk (or plug) that moves perpendicular to the seat. This design allows for fine throttling, reliable sealing, and effective shut-off, especially in steam, cooling water, fuel oil, and chemical systems. Common Types of Globe Valve...Read more -
How Does Quick Closing Valve Operate
What Is a Quick Closing Valve A quick closing valve is a type of shut-off valve that can be closed immediately, usually by manual or remote actuation, without the need to rotate a handwheel or lever multiple times. It’s typically used on fuel lines, oil lines, engine rooms, and emergency fluid sy...Read more -
How To Replace Worm Gear Actuator on a Valve
What Is a Worm Gear Actuator A worm gear actuator is a mechanical device used to manually or motor-operate valves, especially quarter-turn types like butterfly valves and ball valves. It uses a worm-and-wheel mechanism to reduce the required input torque while providing precise control and self-l...Read more -
What Is The Importance of Fire Valves In Marine Applications
Fire valves are more than just metal parts in a pipeline—they are the first line of defense against fuel-fed fires that can threaten lives, destroy equipment, and endanger entire vessels. In this blog, we explore the importance of fire valves, their functions and marine applications, and how choo...Read more -
What Is The Purpose of Mud Box In Marine Applications
What Is a Mud Box A mud box is a type of coarse strainer used in ship piping systems to filter out large debris from liquids such as seawater or bilge water before they enter essential systems like pumps, cooling systems, or ballast tanks. It is typically installed:Before the sea chest or suction...Read more -
What Are The Standards for Use of Marine Valves
This article explores the global standards and classification approvals that marine valves must meet, the importance of certifications, and how Qingdao I-FLOW, a trusted marine valve manufacturer, ensures high-quality, certified products for ships and offshore applications. Why Standards Matter f...Read more