A compact rapid air valve made of stainless steel that absorbs the expansion of water during freezing with a disc spring to prevent damage to the air valve, ensuring safety.
The JWWA B 137 rapid air valve for water supply has equivalent performance, is lightweight and compact, making installation and maintenance easy. Features: - The built-in disc spring in the lid absorbs the expansion of water during freezing, preventing damage to the valve. - Major components are made of stainless steel, providing excellent aesthetics and allowing for long-term reliable use. - Performance is equivalent to the JWWA B 137 rapid air valve for water supply with a diameter of 25 mm. - It has a flange shape with a height of 242 mm and a weight of 9 kg, making it lightweight and compact, ideal for shallow burial. - Installation in narrow spaces and disassembly and assembly during maintenance can be easily performed. - The floating valve body and the movable valve body are connected using a unique method that applies the principle of leverage, allowing for smooth and reliable operation. - The ball cock is made of stainless steel (SCS13) and has a freeze damage prevention feature, ensuring long-term use is safe. - It is a lead-free product that does not use any copper alloys containing lead. - By attaching an emergency town nozzle for air valves, pressure measurement and the installation of emergency water supply taps are possible. For more details, please contact us or download the catalog.
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basic information
Nominal diameter: 25mm Specifications: JWWA 137 compliant product Maximum operating pressure: Type 2: 0.75MPa, Type 3: 1.0MPa
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Applications/Examples of results
It is used in water supply piping, agricultural water, and general piping throughout the country.
catalog（1）
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CAD data（2）
| Model number | overview | File |
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| RS-3 Type Rapid Air Valve (Stainless Steel) for Freeze Damage Prevention |
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| RS-3 Type Rapid Air Valve (Stainless Steel) for Freeze Damage Prevention |
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Company information
A valve manufacturer based in Hikone City, Shiga Prefecture. As a member of the AVK Group (Denmark), it manufactures and sells valves and fire hydrants for domestic water supply and sewage systems. Additionally, it imports and sells various valves and fire hydrants that meet international standards for water supply, gas, fire protection piping, and industrial plants.