Valve bodies having wear resistant inner cores
AssigneeFisher Controls International LLC
InventorsCherra Meloy, James Acton
Life of this patent
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Abstract
Example valve bodies having resistant inner cores are disclosed herein. An example method includes forming a monolithic inner core of a valve body using a first material. The monolithic inner core defines a flow path of the valve body. The monolithic inner core has a thickness that varies between a first wetted portion of the flow path and a second wetted portion of the flow path different than the first wetted portion. The monolithic inner core provides erosion and corrosion resistant characteristics against process fluids. The method further includes overmolding an outer shell of the valve body to the monolithic inner core, the outer shell including a second material different than the first material.
Claims19
A method comprising:
- forming a monolithic inner core of a valve body using a first material, the monolithic inner core defining a flow path of the valve body, the monolithic inner core having a thickness that varies between a first wetted portion of the flow path and a second wetted portion of the flow path different than the first wetted portion, the monolithic inner core to provide erosion and corrosion resistant characteristics against process fluids;
- and
- overmolding an outer shell of the valve body to the monolithic inner core, the outer shell including a second material different than the first material.
A method for forming a valve body, the method comprising:
- forming a monolithic inner core defining a fluid flow passageway of the valve body, the fluid flow passageway having a thickness that varies between a first wetted portion of the fluid flow passageway and a second wetted portion of the fluid flow passageway different than the first wetted portion, the monolithic inner core composed of a first material having at least one of a first corrosion or erosion resistant characteristic;
- positioning the monolithic inner core in a mold;
- and
- providing molten metal in the mold to form a monolithic exterior shell that encases the monolithic inner core, the monolithic exterior shell including a second material different than the first material, the second material having at least one of a second corrosion or erosion resistant characteristic, the first corrosion or erosion resistant characteristic greater than the second corrosion or erosion resistant characteristic.
A method comprising:
- forming a monolithic insert made of a first material, the monolithic insert defining a flow path of a valve body between a first port and a second port, the flow path having an orifice between the first port and the second port, the orifice having a central axis that is non-parallel relative to a longitudinal axis of the first port and a longitudinal axis of the second port, the monolithic insert having a thickness that varies between a first wetted portion of the flow path and a second wetted portion of the flow path different than the first wetted portion, the first wetted portion adjacent the orifice such that the central axis of the orifice intersects the first wetted portion;
- and
- overmolding an outer shell to the monolithic insert, the outer shell made of a second material different than the first material.
Dependencies are inferred from the claim text.