Their purpose is to prevent accidental flow through a pipeline to a vessel. Standard Blind Specification Revision 11 241109 Document Status LIVE Page 1 of 1 Standard Blind Specification Element Requirement Room Configuration.
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Blinds Spacers and Spectacle Blinds Single line blind or blank is installed adjacent to a valve to ensure positive shut-off.
Spec blind. Design Specifications Practically any alloy or special line blind can be furnished Carbon steel blinds have one shop coat of paint Tie bar and handle thickness is one half of blind thickness minimum approximately On all alloy blinds handles and tie bars are carbon steel unless. 19 riviä A spectacle blind is used in piping for positive isolation of the section of a line or equipment. If the Spectacle Blind in the close position is rotated the pipe is blanked off and no flow is possible.
Similar to a flat face flange the surface of the disc is flat suited for flat face. Making Good Where existing blinds are to be removed making good of existing structure must take place. Normally a Spectacle Blind is mounted in the open position so that flow through the pipe is possible.
RTJ male and female is also possible. Spectacle blinds spades and spacers are manufactured in accordance with clients requirements in any required material with any required certification. The shape is similar to a pair of glasses or spectacles hence the name spectacle blind.
We ship hydro blinds worldwide for both purchase and rental. La Meccanica Padana manufactures Spectacle Blinds from 12 to 60 in different types of material as follow. RTJ FACE DIMENSIONS AND FLANGE TOLERANCES.
It is different than a valve in. Raised face spectacle blind RF. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel.
One end of the spectacle blind will have an opening that allows fluid flow through the pipe during operation and the other end is made solid to block flow during isolation or maintenance time. A spectacle blind is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. 22 riviä A spectical blind is a combination of both a ring and single spacer.
These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. Spectacle Blinds should be made from a plate or forging specification approved for use by ASME B313 of essentially the same chemical composition as the mating flanges and piping involved. Likewise raised face flanges there is an additional thickness on the surface of the.
There are three types of spectacle blinds. Carbon steel ASTM 105 A516 Gr. SPECTACLE BLINDS FOR USE WITH FLANGES.
Contact us online or call 409 736-7665 today to rent or purchase paddle blinds slip blinds and spade blinds worldwide. 606570 A350 LF2 A694 F60-65. What is a spectacle blind.
A spectacle blindconsists of a blind and spacer. In order to guarantee a perfect waterlight two gaskets are normally mounted one on each side of spectacle blind. Spectacle Blinds be applied in systems which regularly need to be separated from other installations.
Spectacle Blinds ASME B1648 may be used for installation between ASME B165 flanges. Ring joint face. Spectacle Blind Slip Blind and Spacers Paddle Blank and Spacer Spectacle blind spades and spacers are also known as figure-8 paddle blank Slip blind and spacer.
Posted in Pipe Flange. A spectacle blind is a forged product and combination of a flange spade and a ring spacer in one single product. The Spectacle Blind is inserted between two flanges.
What is a spectacle blind. The spectacle blinds spades and spacers are flame cut from plate material and are machined with a smooth or stock finish gasket contact surface. Flat face spectacle blind FF.
22 riviä An 8 blind or a spectacle blind is a piping fitting that is used for providing positive. BOLTING CHART FOR FLANGES. We also guarantee 24-hour delivery on all orders.
A spectacle blind or spec blind abbreviated as SB is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service.
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