Spectacle Blind And Spacer
Spectacle blind and spacers are a pressure retaining device used in the piping pipeline industry to temporarily or permanently blind shut or isolate part of the piping or pipeline system.
Spectacle blind and spacer. Whether as half a spectacle blind or used by itself the line blank forms a positive shut off. Spectacle blinds spades and spacers are manufactured in accordance with clients requirements in any required material with any required certification. The spectacle blinds spades and spacers are flame cut from plate material and are machined with a smooth or stock finish gasket contact surface.
The diameter always is slightly larger than the raised face of a flange. If a piece of equipment needs to be inspected or removed from service then the plate covers the ring to form an airtight seal which consequently isolates a section of line or the piece of equipment. The spectacle blind is sometimes sold split into it s two parts the line blank and the ring spacer.
Rtj male and female is also possible. Line blanks by itself the solid side of the spectacle blind is called a line blank skillet blind paddle blank paddle blind or spade. Blinds spaces and spectacle blinds are used for the purpose of positive shut off of a piping system where mere shut off using valves is not sufficient as valves are prone to leakage.
Usa industries spectacle blinds are a single piece of machined metal designed to eliminate the hassle of having seperate paddle blind and spacer sets. When a section of your pipe needs to be isolated from the rest for maintenance a spectacle blind or spec blind can make the process much easier. A spec blind is a combination of a ring spacer and single blind.
Spectacle blinds are meant to be rotated to change blind spacer orientation. These are generally used in hazardous services like hydrocarbon fluids. Spectacle blinds consist of a connected ring spacer and a plate spade.
Spectacle blind spades and spacers are also known as figure 8 paddle blank slip blind and spacer. These devices are cost effective alternatives to isolation valves. They are usually permanently installed in a piping system and rotated as needed.
Spectacle blind flange spade and ring spacer are forged products used to blind pipelines temporarily or permanently. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. A spectacle blind is a forged product and combination of a flange spade and a ring spacer in one single product.
By a correct assembly the bolts are just not touched by the blind or spacer. A spectacle blind combines in one single product a flange spade and a ring spacer.
