Exhalation & Demand Valve Suppliers

An exhalation and demand valve is a device used in breathing apparatus, such as scuba diving gear or respirators. It allows the user to inhale air from a tank or other source, and exhale carbon dioxide back into the environment. The valve has two functions: the demand valve opens when the user inhales, allowing air to flow into the lungs, and the exhalation valve opens when the user exhales, allowing carbon dioxide to escape. This process is repeated with each breath, allowing the user to breathe safely and comfortably in a variety of environments.

An exhalation and demand valve is a device used in breathing apparatus for firefighters, divers, and other professionals who require respiratory protection. The benefits of using an exhalation and demand valve include:

• Improved breathing efficiency: The exhalation and demand valve helps to regulate the flow of air in and out of the breathing apparatus, making it easier for the user to breathe.
• Reduced fatigue: By reducing the effort required to breathe, the exhalation and demand valve can help to reduce fatigue and improve endurance during prolonged use.
• Increased safety: The demand valve ensures that the user receives a constant supply of air, even in low oxygen or high carbon dioxide environments, reducing the risk of hypoxia or other respiratory problems.
• Enhanced communication: The exhalation valve allows for clear communication between team members, as it reduces the noise and distortion caused by exhalation.

Improved comfort: The exhalation and demand valve can help to reduce the build-up of heat and moisture inside the breathing apparatus, making it more comfortable to wear for extended periods.

There are several types of exhalation and demand valves available in the market, including:

• Diaphragm valves: These valves use a flexible diaphragm to control the flow of air. They are commonly used in diving equipment and respirators.
• Piston valves: These valves use a piston to control the flow of air. They are commonly used in scuba diving regulators.
• Lever-operated valves: These valves use a lever to control the flow of air. They are commonly used in industrial respirators.
• Automatic demand valves: These valves automatically adjust the flow of air based on the user's breathing rate. They are commonly used in aviation and military respirators.

Manual demand valves: These valves require the user to manually adjust the flow of air. They are commonly used in emergency breathing apparatus and escape respirators.

However, in general, choosing the right size and type of exhalation and demand valve depends on several factors, including the type of breathing gas being used, the depth of the dive, the level of exertion, and personal preference. It is recommended to consult with a professional dive shop or instructor to determine the appropriate size and type of valves for your specific needs. Factors to consider include the valve's flow rate, ease of breathing, and compatibility with your regulator and other equipment.

In Australia, the safety standards and regulations for using exhalation and demand valves are governed by the Australian/New Zealand Standard AS/NZS 1716:2012 Respiratory protective devices. This standard outlines the requirements for respiratory protective devices, including exhalation and demand valves, to ensure they provide adequate protection against respiratory hazards.

• The standard requires that exhalation and demand valves meet certain performance criteria, such as minimum airflow resistance and maximum exhalation resistance. Additionally, the valves must be tested and certified by a recognized testing authority before they can be sold or used in Australia.
• Employers are also required to provide appropriate training and instruction to workers on the proper use and maintenance of respiratory protective devices, including exhalation and demand valves. This includes ensuring that workers are properly fitted with the devices and that they are regularly inspected and maintained to ensure they continue to provide adequate protection.

Overall, the safety standards and regulations for using exhalation and demand valves in Australia are designed to ensure that workers are protected from respiratory hazards in the workplace.

To properly maintain and clean your exhalation and demand valve, follow these steps:

• Disassemble the valve: Remove the valve from the regulator and disassemble it according to the manufacturer's instructions.
• Clean the valve: Soak the valve parts in warm water and a mild detergent for 30 minutes. Use a soft-bristled brush to scrub away any dirt or debris.
• Rinse the valve: Rinse the valve parts thoroughly with clean water to remove any soap residue.
• Disinfect the valve: Soak the valve parts in a solution of 1 part bleach to 10 parts water for 10 minutes. Rinse the valve parts thoroughly with clean water.
• Dry the valve: Allow the valve parts to air dry completely before reassembling the valve.
• Lubricate the valve: Apply a small amount of silicone lubricant to the O-rings and other moving parts of the valve before reassembling it.
• Reassemble the valve: Reassemble the valve according to the manufacturer's instructions.

Test the valve: Test the valve to ensure it is functioning properly before using it again.

It depends on the specific equipment and valves in question. It is important to consult the manufacturer's instructions and guidelines to ensure compatibility and proper use. Using incompatible equipment can compromise the effectiveness of the respiratory protection and put the user at risk.

However, in general, the expected lifespan of a valve depends on various factors such as usage, maintenance, and environmental conditions. It is recommended to follow the manufacturer's guidelines for replacement or have the valve inspected regularly by a qualified technician to ensure proper functioning. If there are any signs of wear and tear, damage, or malfunction, the valve should be replaced immediately.

It is best to contact the manufacturer or supplier directly for this information.