Valve seat assembly for a steam trap
AssigneeTLV Co., Ltd.
InventorKatsuji Fujiwara
Life of this patent
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Abstract
A steam trap including a buoyant float member is equipped with a valve seat assembly which is closed by abutment of the float with a valve seat portion surrounding the flow orifice. The assembly is formed with a float abutment member made of carbide located adjacent the valve seat surface on the outer periphery thereof and located to serve as a contact point for the float member and to define a fulcrum about which the float may pivot when moving into and out of contact with the valve seat surface. The material of the float abutment member ensures a longer service life and a more secure closure of the flow orifice.
Claims7
A valve seat assembly for a steam trap including a housing having an interior wall defining a valve chamber, said valve seat assembly being mounted in said housing and defining a valve orifice in flow communication with said valve chamber with a buoyant float member being movably mounted within said valve chamber and adapted to be brought into and out of engagement with said valve seat assembly to close and open said orifice, said valve seat assembly comprising a body portion made of stainless steel mounted within said housing and defining a valve bore having said valve orifice defined at the inner end of said valve bore, a valve seat surface contiguous with and surrounding said valve orifice, and a float abutment member made of carbide located adjacent said valve seat surface on the outer periphery thereof, said float abutment member being located to serve as a contact point for said float member and to define a fulcrum about which said float member may pivot when moving into and out of contact with said valve seat surface.
Dependencies are inferred from the claim text.