Valve seating with electrodes, especially for <<enamel-test>> type control device
AssigneeDE Dietrich Process Systems
InventorGeorges Cronimus
Life of this patent
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Abstract
A valve seating (23) is made from a fluoridated polymer, for example, solid glass-coated PTFE or reinforced PFA. At least one electrode (24) is attached to or integral with the valve seating and made of conductive material, such as graphite-TEFLON®, that is compatible with the valve seating. The valve seating is especially for use in conjunction with a device for verifying the integrity of an enamel coating of the “enamel-test” type. The valve seating is then used on the waste valve (11) of the container to be checked and two electrodes (24) are disposed so as to be in contact with the contents (8).
Claims15
A valve seating for a valve of a container having a conductive metal body and a protective layer on an inner surface of the container to protect the body of the container from contents of the container, the valve seating interacting with a valve piston to control flow of the contents through the valve, the valve seating being adapted for monitoring of a condition of the protective layer on the inner surface of the container by monitoring an electrical current through the protective layer and comprising:
- a generally tubular body for receiving the piston and having,
- an upper surface mating with the piston in a sealing relationship, and
- an exterior surface mating with a valve opening in the container in a sealing relationship, and
- at least a first electrode exposed to the contents of the container which is one of attached to and integral with the valve seating,
- at least the first electrode being of a conductive material compatible with the valve seating and connectable to an monitoring apparatus for monitoring the condition of the protective layer on the inner surface of the container.
Dependencies are inferred from the claim text.