The exhaust valve is a crucial component in pipeline systems, widely used in boilers, HVAC systems, oil and gas pipelines, and water supply and drainage networks. It is typically installed at high points or bends to remove trapped air, thereby improving system efficiency and reducing energy consumption. In most cases, the ARSX/ARSH series exhaust valves contain approximately 2% dissolved air in the water. As water flows through the system, this air gradually separates and accumulates at the highest point of the pipeline, forming an air pocket. This can significantly hinder water flow, potentially reducing the system’s capacity by 5–15%. The primary function of the exhaust valve is to remove this 2% dissolved air, making it ideal for installation in high-rise buildings, industrial piping, and small pumping stations to enhance system performance and save energy. The SIMPLE LEVER TYPE micro-exhaust valve features an elliptical body with all internal components—such as the float ball, lever, lever frame, and valve seat—made from 304 stainless steel. It has an internal exhaust port of 1/16", suitable for environments with a maximum working pressure of PN25. Main specifications include: - Nominal diameter: DN15–DN25 - Nominal pressure: PN10, PN16, PN25 The CARX series compound exhaust valve is designed with a cylindrical body containing a set of stainless steel balls, float arms, and a poppet. It is commonly installed at pump outlets or in distribution pipelines to remove large amounts of accumulated air or release small pockets of air at high points, thus enhancing pipeline and pump efficiency. Additionally, when negative pressure occurs in the pipe, the valve quickly draws in air to prevent damage. Operation principle: When water starts flowing, the poppet remains open to release a large volume of air. Once water fills the valve, the float rises, closing the poppet and stopping the exhaust. During normal operation, if small amounts of air accumulate, the water level drops, causing the float to descend and allowing air to escape through a small hole. When the pump stops, the pipe may be empty or under negative pressure, prompting the poppet to open and draw in air to maintain system integrity. CARX series integral single-ball composite exhaust valve (for clean water): - Pressure rating: PN10 - Nominal diameter: DN25–100mm (DN25 is threaded, others are flanged) CARX series separate compound exhaust valve (for clean water and sewage): - Pressure rating: PN10 - Nominal diameter: DN250–300mm CARX series overall double-ball composite exhaust valve: - Pressure rating: PN10 - Nominal diameter: DN250–300mm The SCAR series sewage composite exhaust valve operates on the same principle as the clean water version but includes structural modifications. The valve body is extended, and the lever mechanism is adjusted so that dirt settles at the bottom, preventing it from interfering with the exhaust process. Main specifications: - Pressure rating: PN10 - Nominal diameter: DN50–200mm These valves are essential for maintaining efficient and reliable fluid transport in various industrial and municipal applications.

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