Breather valves, also called vent valves, are automatic safety devices installed on storage tanks, vessels, or pipelines. They maintain internal pressure balance by automatically venting excess gas (positive pressure) or inhaling air (negative pressure), preventing tank damage from overpressure or vacuum. Composed of valve body, pressure-sensitive disc, spring, and sealing components, they are essential for safe storage of liquids and gases.
Robust and compact structure, with corrosion-resistant materials (stainless steel, carbon steel, aluminum) to adapt to harsh storage environments. The precision pressure-sensitive disc and spring ensure accurate pressure control, while the simple design allows easy installation, inspection, and maintenance without disassembling the entire device.
Automatic pressure balance, venting excess gas when internal pressure exceeds the preset limit and inhaling air when pressure drops too low. Reliable sealing performance to prevent leakage of stored media and entry of moisture, dust, or contaminants. High pressure-bearing capacity, suitable for various storage vessels and compatible with liquids, gases, and vapors.
Designed to vent excess gas when internal pressure rises above the safe limit. Suitable for tanks storing volatile liquids (oil, chemicals) that generate vapor and increase internal pressure.
Inhale air to balance vacuum caused by liquid outflow or temperature drop. Ideal for storage tanks with frequent liquid loading and unloading, preventing tank collapse due to negative pressure.
Widely applied in oil & gas storage, petrochemical, chemical processing, water treatment, food and beverage, and pharmaceutical industries. Installed on storage tanks, reservoirs, and vessels storing oil, chemicals, water, and other liquids/gases to ensure safe operation and protect equipment.
