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What is the difference between a spectacle blind and a paddle blind or spade blind?
Wiki User
∙ 11y ago
Spectacle Blinds-
1.Usually installed as a permanent device.
2.Made from two metal discs attached by a small metal plate. Looks like a pair of glasses or "spectacles".
3.Requires open area to change from open to closed position or to remove the blind.
4.Heavier than a paddle blind. Larger sizes require assisted lifting for installation.
Paddle Blinds-
1.Usually installed as a temporary device.
2.Made from one metal disk with handle. Looks like a paddle.
3.Can be used in tight spaces where access is limited.
4.Lighter than a spectacle blind. Often portable and easy to install.
From- Mahendra, AbuDhabi-UAE.
Wiki User
∙ 11y ago
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Difference between spectacle blind and figure 8 blind?
They are the same thing.
What is a spectacle blind flange?
"A spectacle blind - also known as a figure-8 blind - is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. The shape is similar to a pair of glasses or "spectacles" - hence the name spectacle blind. One end of the blind will have an opening to allow flow through the pipe during operation and the other end is solid to block flow during maintenance. They are generally installed as a permanent device to separate process piping systems."[1]The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance. The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind. The flow has to valved off and pressure relieved prior to loosening flange bolts and swinging the blind.References1. Steinmans, LLC, "What is the difference between a spectacle blind and a paddle blind or spade blind?", Online News Article, Web Link: http://spadeblinds.com/ournews/entry?id=6
What is the antonym of spectacle?
blind
When do you change from spectacle blind to spacer and spade?
When you have space constraints for the positioning of the spectacle blind, then you can consider using spacers and blinds (which have just a handle)
How do you use spectacle?
You look through a spectacle to improve your vision. Thanks you for your answer. I know a spectacle look like a glasses. But the matters i wonder is when and how to use a spectacle blind and blind space on piping line.( Used in transfering oil on piping) I am looking forward a answer from you.
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The whole idea of a spectacle blind is so that one can be absolutely sure that an item of equipment is properly and securely blanked off with no possibility of any flow or leakage through a valve during maintenance. The flow can be diverted to other items of equipment but not just bypassed around the blank as this would compromise the safety function of the spectacle blind. The flow has to valved off and pressure relieved prior to loosening flange bolts and swinging the blind.
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the blind side is more of drama and audibioghraphy
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A blind discount is defined as the difference in cost between the listed cash price for equipment and the reduced financed amount. It can also be the difference between the list price of a ca and a lower interest rate.
Are opossums color blind?
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What is an antonym for spectacle?
Antonyms for spectacles are normality and ordinariness! It might help your question.
