I. Different Installation Methods
Vertical check valves are typically installed vertically in pipelines, with the inlet and outlet aligned in a straight line to meet vertical pipe requirements. Horizontal check valves are installed horizontally, with the inlet and outlet forming a 90-degree angle, making them suitable for pump stations and water tanks.
II. Different Application Scenarios
Vertical check valves are used in vertical piping systems, including water supply/drainage, fire protection, HVAC, and industrial pipelines where strict unidirectional flow control is required. Horizontal check valves are primarily applied in pump stations, agricultural irrigation, municipal engineering, firefighting systems, HVAC, and power projects to prevent reverse flow.
III. Structural Differences
Vertical check valves require higher opening clearance, occupying more space, but provide more stable backflow prevention. Horizontal check valves use manual or spring-assisted opening mechanisms with lower lift height, resulting in compact size and higher flow capacity when open.
IV. Service Life Variation
Vertical check valves have longer service life due to their stable structure and installation in straight pipes, ensuring superior unidirectional flow control. Horizontal check valves, though compact, feature more complex internal mechanisms, leading to relatively shorter durability.
In summary, while both vertical and horizontal check valves serve the same fundamental purpose, they differ in installation, applications, structure, and lifespan. Selection should be based on specific operational requirements.
