A valve assembly for a pressure change damper for a braking-force-regulated hydraulic vehicle brake system includes a valve housing, two valves, and a valve seat body. The valve housing includes an open side. The two valves are arranged in the valve housing. The valve seat body includes two valve seats for the two valves and is configured to close the open side of the valve housing.

A valve assembly for providing pressure control at an output port, including: an input port and the output port; a pressure sink; a first valve with a first control connection; a second valve with a second control connection, in which the first valve and the second valve are arranged in series between the input port and the pressure sink and between which the output port branches off; a first control valve to connect the first control connection to the input port or vents the first control connection in a controllable manner; and a second control valve to connect the first control connection to the output port or vents the first control connection in a controllable manner. Also described are a related anti-lock braking system, a commercial vehicle, and a method.

A valve assembly for providing pressure control at an output port, including: an input port and the output port; a pressure sink; a first valve with a first control connection; a second valve with a second control connection, in which the first valve and the second valve are arranged in series between the input port and the pressure sink and between which the output port branches off; a first control valve to connect the first control connection to the input port or vents the first control connection in a controllable manner; and a second control valve to connect the first control connection to the output port or vents the first control connection in a controllable manner. Also described are a related anti-lock braking system, a commercial vehicle, and a method.

Disclosed herein a check valve for a brake system includes a valve seat configured to be form an oil passage thereinside; an opening/closing member configured to open and close the oil passage inside the valve seat; an elastic member having one end elastically supporting the opening/closing member; a valve housing configured to support the other end of the elastic member and coupled to the valve seat; and a plunger that is accommodated in the oil passage and flows according to a flow of fluid generated during operation of the brake system.

Disclosed herein a check valve for a brake system includes a valve seat configured to be form an oil passage thereinside; an opening/closing member configured to open and close the oil passage inside the valve seat; an elastic member having one end elastically supporting the opening/closing member; a valve housing configured to support the other end of the elastic member and coupled to the valve seat; and a plunger that is accommodated in the oil passage and flows according to a flow of fluid generated during operation of the brake system.

A retarding control assembly for a brake valve may include a bleed line configured for arrangement between a spring chamber of a brake command assembly and a tank line. The bleed line may include a check valve configured to allow fluid flow from the spring chamber to the tank and a check valve bypass configured to allow fluid flow from the tank line to the spring chamber passed the check valve and defining a restricted pathway.

A retarding control assembly for a brake valve may include a bleed line configured for arrangement between a spring chamber of a brake command assembly and a tank line. The bleed line may include a check valve configured to allow fluid flow from the spring chamber to the tank and a check valve bypass configured to allow fluid flow from the tank line to the spring chamber passed the check valve and defining a restricted pathway.

Disclosed herein a check valve for a brake system includes a valve seat configured to be form an oil passage thereinside; an opening/closing member configured to open and close the oil passage inside the valve seat; an elastic member having one end elastically supporting the opening/closing member; a valve housing configured to support the other end of the elastic member and coupled to the valve seat; and a plunger that is accommodated in the oil passage and flows according to a flow of fluid generated during operation of the brake system.

Disclosed herein a check valve for a brake system includes a valve seat configured to be form an oil passage thereinside; an opening/closing member configured to open and close the oil passage inside the valve seat; an elastic member having one end elastically supporting the opening/closing member; a valve housing configured to support the other end of the elastic member and coupled to the valve seat; and a plunger that is accommodated in the oil passage and flows according to a flow of fluid generated during operation of the brake system.

A check valve is arranged in a flow path through which hydraulic fluid flows. The check valve includes: a cap fixed in the flow path; a plug seated on a seat surface provided in the flow path; a first extension provided in the cap and extending from the cap toward the plug; a second extension provided in the plug, extending from the plug toward the cap, and guided by the first extension; and a spring interposed between the cap and the plug to bias the plug toward the seat surface. The check valve further includes a retainer attached to the cap, extending from the cap toward the plug, and locked to the second (52b).