Product Details: The Apsco VM Series Hydraulic Cabin Air Control Valve is designed to provide maximum supply of 150 psi and many detent options are available. This valve is perfect for controlling the air pressure in your cabin, allowing you to adjust the pressure to your desired level. The lens for labeling is removable, making it easy to customize the valve to your needs. With its easy installation and reliable performance, it is the perfect choice for your cabin air control needs. FleetPride is your First Click in Heavy Duty®.