Types Of Blinds In Piping

Different types of blinds 1.

Types of blinds in piping. Their purpose is to prevent accidental flow through a pipeline to a vessel. Spectacle blinds are available in standard sizes up to 24 inches and in forged material grades like astm a105 high temperature carbon a350 low temperature carbon and various astm a182 grades alloy stainless steel duplex. All other blind specifications a182 a350 b160 etc. 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.

Vertical blinds have individual slats that run along a track at the top of the blind. Thick single blinds or rigid piping systems normally require ring spacers. The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. Blind flanges are also used as a manhole cover in the vessel.

Standard specification for pressure vessel plates alloy steel nickel. A spectacle blind is a steel plate cut into two discs of a certain thickness. The blind flange is a blank disc with a bolt hole. 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 spectacle blinds are generally applied to permanently separating pipesystems or just to connect with each other. Blinds are provided for either series a mss sp44 or series b api 605 flanges meeting asme b16 47 b16 48 ansi b16 5 and b16 2 specifications. Standard specification for chromium and chromium nickel stainless steel plate sheet and strip for pressure vessels and for general. 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.

A spectacle blind is a forged product and combination of a flange spade and a ring spacer in one single product. Standard specification for pressure. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Depending on the style vertical blinds either open from side to side or by parting in the middle.

A paddle blind is often made from one solid metal disc and will usually have a thin length of metal attached to one end to be used as a handle. Generally these types of blinds are applied in piping systems that do not require constant maintenance. These blinds are a popular choice for patio doors and floor to ceiling windows.