The Small Air Admittance Valve is designed for use with 1-1/2" or 2" pipes, accommodating up to 20 DFU. This valve allows air to enter the plumbing system while preventing sewer gases from escaping, ensuring a safe and efficient drainage system. Constructed from durable materials, it is designed for long-lasting performance and reliability. The compact design makes it easy to install in tight spaces, making it ideal for both residential and commercial applications. This valve meets industry standards for performance and safety.