Leak resistant, switching, double valve system

Details Leak resistant, switching, double valve system Leak resistant, switching, double valve system

1998-05-14

2000-08-08

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

137240, 137312, 13761417, 13761419, B08B 302, B08B 902

Patent

active

06098645&

ABSTRACT:
A double-seat valve with an upper valve stem and a lower valve stem which, on the end, each have valve sealing bodies, each of which valve sealing bodies has a seal which is located on the balance diameter. One of the valve sealing bodies also has a center seal which is used to seal a leakage space when the valve stems are in the open position. The center seal also lies on the balance diameter. The other valve sealing body has a sealing collar, against which sealing collar the center seal is in contact when the valve stems are in the open position, so that even in this case, a sealing of the leakage space is guaranteed.

REFERENCES:
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patent: 4687015 (1987-08-01), Mieth
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patent: 5699825 (1997-12-01), Norton
patent: 5806554 (1998-09-01), Mieth

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