{"id":6903,"date":"2013-06-01T00:00:00","date_gmt":"2013-06-01T00:00:00","guid":{"rendered":"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-molded-expanded-perlite\/"},"modified":"2017-06-09T20:25:39","modified_gmt":"2017-06-09T20:25:39","slug":"exploring-insulation-materials-molded-expanded-perlite","status":"publish","type":"articles","link":"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-molded-expanded-perlite\/","title":{"rendered":"Exploring Insulation Materials: Molded Expanded Perlite"},"content":{"rendered":"

Molded Expanded Perlite
\nInsulation Products<\/span><\/b><\/p>\n

Molded Expanded Perlite
\ninsulation is defined by ASTM as insulation composed principally of expanded
\nperlite and silicate binders. It may also contain
\nreinforcing fibers.<\/span><\/p>\n

Perlite Pipe and
\nBlock Insulations are covered by ASTM C610. The standard covers the material
\nfor operating temperatures between 80\u00b0F and 1200\u00b0F.<\/span><\/p>\n

Perlite pipe
\ninsulation is supplied as a hollow cylinder split into half or
\nquarter sections, or as curved segments. Pipe insulation sections are typically
\nsupplied in lengths of 36″, and are available in sizes to fit most standard
\npipes. Available thicknesses range from 1″ to 4″ in \u00bd” increments. Thicker insulation
\nis supplied in nested sections.<\/span><\/p>\n

Perlite block insulation is supplied in lengths of
\n36″ and 1 meter, widths from 24″ and in thickness from 1\u00bd” to 6″ in increments
\nof \u00bd”. Perlite molded fitting cover insulation is available for a wide variety
\nof standard elbow and tees.<\/span><\/span><\/p>\n

Scored and V-Groove
\nsections are also available. Special shapes such as valve or fitting insulation
\ncan be fabricated from standard sections.<\/span><\/p>\n

Perlite is normally
\nfinished with a metal or fabric jacket for appearance and weather protection.<\/span><\/p>\n

The specified
\nmaximum thermal conductivity for both block and pipe insulation is 0.48
\nBtu•in\/(h•ft\u00b2•\u00b0F) at a mean temperature of 100\u00b0F.<\/span><\/p>\n

Perlite insulation
\nproducts also comply with the ASTM C610 requirements for flexural (bending)
\nstrength, compressive strength, weight loss by tumbling, moisture content,
\nlinear shrinkage, water absorption after heat aging, surface-burning
\ncharacteristics, and hot surface performance. Additionally, it complies with
\nthe standard for use in contact with austenitic stainless steel.<\/span><\/p>\n

Typical applications include piping and equipment
\noperating at temperatures above 250\u00b0F, tanks, vessels, heat exchangers, steam
\npiping, valve and fitting<\/span> insulation, boilers, vents, and exhaust ducts.
\nPerlite insulation is often used in insulation systems where water may enter
\nand cause corrosion or process problems. Examples of this would be wash-down
\nareas, deluge testing, pipes that cycle in temperature, and stainless steels that
\nare susceptible to stress corrosion cracking.<\/span><\/p>\n

\n
<\/a>Figure 1<\/b><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Molded Expanded Perlite Insulation Products Molded Expanded Perlite insulation is defined by ASTM as insulation composed principally of expanded perlite and silicate binders. It may also contain reinforcing fibers. Perlite Pipe and Block Insulations are covered by ASTM C610. The standard covers the material for operating temperatures between 80\u00b0F and 1200\u00b0F. Perlite pipe insulation is<\/p>\n","protected":false},"author":[],"featured_media":0,"template":"","categories":[37,38,298,34,294,301,297],"class_list":["post-6903","articles","type-articles","status-publish","hentry","category-market-research","category-material-selection","category-installation","category-industrial","category-training","category-design","category-basic-understanding"],"acf":[],"yoast_head":"\nExploring Insulation Materials: Molded Expanded Perlite - Insulation Outlook Magazine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/insulation.org\/io\/articles\/exploring-insulation-materials-molded-expanded-perlite\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Exploring Insulation Materials: Molded Expanded Perlite\" \/>\n<meta property=\"og:description\" content=\"Molded Expanded Perlite Insulation Products Molded Expanded Perlite insulation is defined by ASTM as insulation composed principally of expanded perlite and silicate binders. It may also contain reinforcing fibers. Perlite Pipe and Block Insulations are covered by ASTM C610. The standard covers the material for operating temperatures between 80\u00b0F and 1200\u00b0F. 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