Patent ID: 7240603

Claim:
A door closer valve that can be placed in a door closer piston and operates as a directional valve in a first direction and an element blocking the flow of the door closer fluid in a second direction, said valve being arranged to move in the axial direction of the mounting hole in accordance with the pressure conditions within the door closer, said valve comprising a body part that is made of plastic and comprises a protruding flange at one end of the body part, one of the surfaces of the flange being arranged to settle against the body of the door closer piston around the mounting hole while simultaneously creating a seal around the mounting hole, and clips at the other end of the body part to hold the body part in the mounting hole while allowing said movement, and wherein the body part is formed with passages at both ends of the body part, the body part comprises two separate parts arranged to be attached to each other, and a check valve part is arranged in the body part and comprises a flexible element and a blocking element between the passages.