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Difference between revisions of "Goggle Valves"
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[[File:Goggle Valves1.jpg|thumb|right|Goggle Valves]] | |||
* | [[File:Goggle valve.jpg|thumb|right|Goggle Valves]] | ||
* | '''Goggle Valves''' are used to positively isolate downstream media flow. They are typically used in 20 inch to 100 inch diametre lines. They provide 100% man safe shut-off. | ||
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==Applications== | |||
Goggle valves are frequently found in the petrochemical, steel, pulp and paper, maritime and oil and refinery industries.Positive pipeline close or off is vital in many piping systems to assure safety of personnel working on downstream equipment, particularly when flammable, toxic liquids or gases could seep past a closure. A goggle valve is mandatory to comply with certain plant safety regulations when visible proof of shut or off is necessary. | |||
The valve will render an absolute tight shut-off in blast furnace, basic oxygen, open hearth or other gas mains applications. It is designed for vertical operation in a horizontal main - or with roller support and other adaptations for horizontal operation in a vertical main. | |||
==Characteristics== | |||
* Absolute positive shut-off -man safe | |||
* No spreading of pipe required | |||
* Seal unaffected by piping misalignment | |||
* Simple, one man, spectacle changing from one side of the line | |||
* Manual, electric, hydraulic and pneumatic actuation available | |||
* Optional drain or purge connections | |||
* Special anti corrosive coatings such as epoxy, PTFE and Sermetel ceramic are available if required | |||