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Valve

IP.com Disclosure Number: IPCOM000089877D
Original Publication Date: 1968-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Belani, KG: AUTHOR

Abstract

Valve 10 maintains constant pressure in container 12 by opening discharge port 14 when the pressure inside the container exceeds the required pressure. This valve operates at a constant required pressure irrespective of any changes in atmospheric pressure. Valve 10 consists of metal bellows 16, evacuated to a reference pressure below atmospheric pressure and sealed. Piston 18, attached to bellows 16, carries two sealing O-rings 20, positioned on both sides of the discharge port. As the pressure inside container 12 exceeds the required pressure, bellows 16 compress and the piston 0-ring clears the discharge port and discharges vapor or gas into atmosphere 22 through an opening 24 in the threaded neck of valve 10.

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Valve

Valve 10 maintains constant pressure in container 12 by opening discharge port 14 when the pressure inside the container exceeds the required pressure. This valve operates at a constant required pressure irrespective of any changes in atmospheric pressure. Valve 10 consists of metal bellows 16, evacuated to a reference pressure below atmospheric pressure and sealed. Piston 18, attached to bellows 16, carries two sealing O-rings 20, positioned on both sides of the discharge port. As the pressure inside container 12 exceeds the required pressure, bellows 16 compress and the piston 0-ring clears the discharge port and discharges vapor or gas into atmosphere 22 through an opening 24 in the threaded neck of valve 10. Threaded plug 26 can be adjusted to vary the position of O-rings relative to the discharge port, thus varying the required pressure at which the valve operates.

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