Patent Number: 6,308,731

Title: Vent valve

Abstract: A vent valve includes a main valve having a valve chamber provided thereinwith an inside annular valve seat and an outside annular valve seat, avalve body normally seated on the seats under its own weight and opened byatmospheric pressure in response to negative pressure, a water collectinggroove formed outward of the outside annular valve seat, a connectingcylindrical part provided at a position deviating from an axis of thevalve chamber for communicating with the valve chamber, and acommunicating flow path formed along the axial direction of the valvechamber for allowing communication between the water collecting groove andan interior of the connecting cylindrical part.

Inventors: Kawasaki; Koichi (Kitakoma-gun, JP)


International Classification:

Expiration Date: 10/32013