Haldex Commercial Vehicle Systems’ family of pressure protection valves – used in air suspensions, air seats and cab isolation systems – standardizes three pressure settings for both a base ...

Air pressure, when applied, overcomes spring force and releases the brakes. More on that a little later. A tractor protection valve (17) senses pressure in one or both lines that carry air to the ...

also reduces the pressure in the brake pipe to trigger the brake valves and apply the air brakes. With standard control valves, the brake cylinders don’t get charged continuously. And over a period of ...

They are meant for use in air suspensions, air seats and cab isolation systems. The pressure protection with one-way check valve prevents reverse air flow and resists corrosion.