Ball valve

Details Ball valve Ball valve

1991-06-07

1993-04-27

Cohan, Alan

Valves and valve actuation

With material guide or restrictor

251315, 137375, F16K 4704

Patent

active

052055337

ABSTRACT:
A valve has a housing having an inlet connection and an outlet connection d formed with a valve seat having spaced inlet and outlet ports connected to the respective connections and a valve element formed with a throughgoing passage having an upstream end and a downstream end. This valve element fits in the seat and is displaceable therein between an open position with its passage aligned between the respective inlet and outlet ports and a closed position with its passage out of alignment between the ports. The passage is formed upstream of its downstream end and downstream of its upstream end as a restriction and is of larger flow cross section at its downstream end than at the restriction so that on fluid flow through the valve from the inlet to the outlet pressure drops in the passage downstream of the restriction.

REFERENCES:
patent: 3501128 (1970-03-01), Pool
patent: 4304261 (1981-12-01), Forester
patent: 4771803 (1988-09-01), Berchem et al.
patent: 4795133 (1989-01-01), Berchem et al.

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