Fluid handling – Processes – Carbonated beverage handling processes
Patent
1993-01-11
1993-10-05
Nilson, Robert G.
Fluid handling
Processes
Carbonated beverage handling processes
137489, 137506, F16K 1710
Patent
active
052495930
ABSTRACT:
A fluid pressure relief system and method for a pressure vessel or tank (10) having a normal vent (16) with a first pilot operated safety valve (18) and an emergency vent (62) having a second pilot operated safety valve (25). A vapor recovery line (20) is connected to relief valve (18) and collected at a vapor storage container (21). A manway (22) on the pressure vessel (10) shown in FIG. 2 defines the emergency vent (62) and a main valve member (66) has a counterweight (74) thereon to urge main valve member (66) to a seated closed position on nozzle (60). The first pilot operated safety valve (18) for the normal vent (16) is shown in FIG. 7 and has a T-shaped body (142) with a main relief valve member (172) at one end of the body (142) mounted for movement in a generally horizontal direction and controlled by a diaphragm (176) at an opposite end of the body (142).
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Publications of The Protectoseal Company, Bensenville, Ill., published 1985, Entitled 1) "Spring Loaded Pressure/Vacuum Relief Vents", pp. 1-6; 2) Series No. 7800 Entitled Emergency Pressure Vent; 3) Polyvinyl Chloride Breather Vents, pp. 1-4; 4) Series No. 8740 Entitled In-Line Conservation Breather Vent; 5) Series No. 53300 Entitled Manhole and Emergency Pressure Cover Vent; 6) Series No. P8540 Entitled FRP Conservation Breather Vent; 7) Series No. 18540 Entitled Conservation Breather Vent With Pipe-Away; 8) Series No. 6240 Entitled Vacuum Vent; 9) Series No. 16240 Entitled Vacuum Vent; and 10) Series No. 17800 Entitled Conservation Pressure Vent With Pipe-Away.
Higgins Thomas F.
McNeely Michael D.
Keystone International Holdings Corp.
Nilson Robert G.
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