Oatey 39016 Sure Vent Air Admittance Valve, 1.5" - 2" Trailor Wheels & Tires Carbide tipped bit for enhances

Carbide tipped bit for enhances routing performance and durability

Cooling Camphor lotion

Accurate to within 1/16" over 130'

Suitable for handheld shower head

Lightweight aluminum alloy mounting

Oatey 39016 Sure Vent Air Admittance Valve, 1.5" - 2" Trailor Wheels & Tires Carbide tipped bit for enhancesThe purpose of an Air Admittance Valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building. An Air Admittance Valve is a one way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero