Abstract: A vehicular air dryer system includes: a dryer inlet configured to receive air from a compressor discharge line a dryer outlet configured to supply dried air, a desiccant cartridge configured to receive the air from the dryer inlet via a dryer inlet line and to provide the dried air for outputting to the dryer outlet via a dryer outlet line a dryer exhaust a pneumatically controlled valve assembly being configured to selectively exhaust air from the compressor discharge line and/or from the desiccant cartridge via the dryer exhaust, and a control valve assembly configured to provide control pressure signals to at least one of the pneumatically controlled valve assembly and a compressor connected to the compressor discharge line. An air dryer for a vehicular air dryer system a pneumatic vehicle system and a vehicle are also provided.

Abstract: A multi-circuit protection valve assembly, comprises, is attached to or integrated into a main housing, and comprises an air inlet; main outlets; main supply lines; and main overflow valves for protecting the main outlets. The valve assembly further comprises an extension part having, attached to or integrated into an extension housing, an extension inlet; an extension outlet; an extension line; and an extension overflow valve for protecting the at least one extension outlet, wherein the extension housing is detachably fixed to the main housing such that the extension inlet is flow-connected to an auxiliary outlet in the main housing. The extension housing is detachably fixed to the main housing by a hollow screw having a cavity. Compressed air discharged through the auxiliary outlet can be conducted through the cavity inside the hollow screw to the extension overflow valve and the at least one extension outlet.

Abstract: A multi-circuit protection valve assembly, comprises, is attached to or integrated into a main housing, and comprises an air inlet; main outlets; main supply lines; and main overflow valves for protecting the main outlets. The valve assembly further comprises an extension part having, attached to or integrated into an extension housing, an extension inlet; an extension outlet; an extension line; and an extension overflow valve for protecting the at least one extension outlet, wherein the extension housing is detachably fixed to the main housing such that the extension inlet is flow-connected to an auxiliary outlet in the main housing. The extension housing is detachably fixed to the main housing by a hollow screw having a cavity. Compressed air discharged through the auxiliary outlet can be conducted through the cavity inside the hollow screw to the extension overflow valve and the at least one extension outlet.