Patent ID: 6116271
Filing Date: 2000-09-12
Classification: F16K,Y10S,Y10T

Abstract:
A venting valve for a fuel tank (2) of a working tool driven by an internal combustion engine, said venting valve comprising:a pressure compensation channel (4) connecting a fuel tank interior (3) to the surrounding atmosphere;a valve seat (12) and a diaphragm (6) closing off said pressure compensation channel (4) when seated on said valve seat (12);wherein said diaphragm (6) is lifted off said valve seat (12) to open said pressure compensation channel (4) when vacuum is present in the fuel tank interior (3);said valve seat (12) located at a first side of said diaphragm (6) facing away from the fuel tank interior (3);said diaphragm (6) having a central opening (10) arranged centrally relative to said valve seat (12);a support plate (9), positioned at a second side (15) of said diaphragm (6) facing the fuel tank interior (3), covering the deflecting area of said diaphragm (6) and supporting said diaphragm (6);said support plate (9) having a sealing bead (17) positioned in alignment with said valve seat (12);a spring (16) forcing said support plate (9) in a direction toward said valve seat (12).