Abstract: A pneumatic piston for an electropneumatic modulator in which the modulator includes a piston housing with a chamber for receiving the pneumatic piston. The pneumatic piston includes a sealing element for sealing an intermediate space between the pneumatic piston and the piston housing; a piston body with a recess for receiving the sealing element; and a securing element configured to fix the sealing element in the recess in a form-fitting manner.

Abstract: A pneumatic piston for an electropneumatic modulator in which the modulator includes a piston housing with a chamber for receiving the pneumatic piston. The pneumatic piston includes a sealing element for sealing an intermediate space between the pneumatic piston and the piston housing; a piston body with a recess for receiving the sealing element; and a securing element configured to fix the sealing element in the recess in a form-fitting manner.

Abstract: A relay valve for a compressed air system of a vehicle, the relay valve comprising: a housing including a pressure medium inlet arranged at or in the housing and connectible with a compressed air source, at least one pressure medium outlet connectible with a consumer, at least one control inlet, at least one vent towards an ambient atmosphere, and at least one relay valve piston movably supported in the housing along an axis, wherein the relay valve piston includes a radially outer rim and a center pass through opening, wherein a support tube of the housing protrudes into the center pass through opening, wherein the relay valve piston is movably supported by the radially outer rim at a radially inner wall of the housing and movably supported by a radially inner circumferential surface of the center pass through opening at a radially outer circumferential surface of the support tube.

Abstract: A relay-valve (RV) device for commercial-vehicles, having: a relay-piston, in a housing, has a piston-pin (PP) extending in a longitudinal-direction (LD) from a piston-plate (PPL) and is movable in the LD in a PPL-guide, the PPL dividing a housing interior into a PP-side volume and a volume remote therefrom, a valve, which is actuated by the PP to introduce a fluid from a supply-pressure-reservoir into the PP-side volume, and an intermediate-element (IE), arranged around the PP is movable relative thereto in the LD in an IE-guide and which divides the PP-side volume into a PPL-side volume and a volume remote therefrom and limits the flow-rate of the fluid to the PPL by at least one through-opening, in which the RV device has an IE-stop, which limits the movement of the IE in the direction of the PPL and against which the IE is bringable into sealing contact by the fluid-pressure.

Abstract: A relay-valve (RV) device for commercial-vehicles, having: a relay-piston, in a housing, has a piston-pin (PP) extending in a longitudinal-direction (LD) from a piston-plate (PPL) and is movable in the LD in a PPL-guide, the PPL dividing a housing interior into a PP-side volume and a volume remote therefrom, a valve, which is actuated by the PP to introduce a fluid from a supply-pressure-reservoir into the PP-side volume, and an intermediate-element (IE), arranged around the PP is movable relative thereto in the LD in an IE-guide and which divides the PP-side volume into a PPL-side volume and a volume remote therefrom and limits the flow-rate of the fluid to the PPL by at least one through-opening, in which the RV device has an IE-stop, which limits the movement of the IE in the direction of the PPL and against which the IE is bringable into sealing contact by the fluid-pressure.