Valve for maintaining the residual pressure in an air suspension of a vehicle

A valve for maintaining a residual pressure in an air suspension of a vehicle, the valve comprising:

• a first body provided with an inlet duct for a fluid;
• a second body provided with an outlet duct for the fluid and connected to the first body;
• a piston pushed by a spring and housed in either the first body or the second body;
• an intermediate body provided with a sealing collar and completely enclosed between the first body and the second body;
• and
• a flexible membrane pushed by the piston against the sealing collar to a closed position for blocking a passage of the fluid between the inlet duct and the outlet duct,
• wherein the first body, the second body and the intermediate body are separate and distinct elements assembled to form the valve, and
• wherein the flexible membrane is held between the first body and the intermediate body, or between the intermediate body and the second body in:
• a peripheral gripping zone made between a peripheral shoulder of the first body or of the second body and a peripheral portion of the intermediate body;
• and
• a central gripping zone made between a central shoulder of the first body or of the second body and a central portion of the intermediate body.