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(X)rnstrong insulations
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LK-20 Block
Insulation
Vfot hcted equipment
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DESCRIPTION
This new high temperature calcium silicote black insulo* tton extends the use of LK Equipment Insvlotion to in clude temperatures up to 1900F. This new product odds Increased temperature loleronco to the properties of mois ture resistance, high strength and superior heot insulation performance of standard LK Block Insolation.
This product which is colored a slight pink and in this way can be distinguished from standard LK Insulation, brings * i :x>5l desire! le physical characteristics of hect insulation material to this high temperature ronge. It may be used as single layer insulation for flat surfaces up to 700F ond in double loyers from 700 to 1800F, or may be used as c first layer with standard LK or Armaglas Block where it shows little shrinkage, even after exposure to temperatures up to 1800aF.
LK-20 Block combines light weight with superior flexural strength, compressive strength and resistance to abrasion. The high temperature limit suits this product to oil high temperature applications including refractory well backing for furnaces and boilers and fireproofing of equipment ond vessel skirts.
physical properties
densttyi approximate!:? 12 lfe, perre. f!.
flexural strength? {ASTM CM3) 90 ftw. p-e? tq, lit.
compressive strength: ;aSTm C565J 130 )b. pc: q. In. at 5% Mri*eHo"
dimensional stability: linear jhrluioyc oiler healing lor 24 hovri is muffle: tn 1200 f ____ 0,7% ei 1800 P____ 1.6%
resistance 1e abrasion? (ceAvenheool tumbling rwsfc-Sots In weight after 10 min) before heeling .... 3% after heeling for 24 hour*
*t 12f>0 r___ 6%
M l SOO J____ 20%
alkalinity: ph 10
working temperature: up lo I8M f
thermal conductivity
512ES
WIDTH - 3, 6, 12 and 18 inches LENGTH - 18 and 36 inches TH/OCNESSES - 1, 1-1/2, 2f M/2( 3, 3-1/2 ond A inches SPECIAL FORM - Curved block available on special order.
LIMITATIONS
LK-20 Block is designed for temperatures up to J80G"F. It should not be used when operating temperatures exceed
this limit.
M*e* temperoiere, t
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LK-20 products are presently available on a madrto-order basis only. Fro/>erftes and characteristics have been determined from laboratory tests only. Data subject ro change vsthout notice and subject also to normal manufacturing and testing tolerances.
WV-05519
APPLICATION
FOR CURVED SURFACES OVER 39* O.D. - Hold in place with 1/2" galvanlied steel bands on work up to 48' diometer end 3/4" bands on work over 48" diameter, Bands to be spaced on 12-18 inch centers. Pointup with insulating cement and then opply hexagono) wiro mesh or metnl lath, wiring to bonds and laced edges. Note: The maximum temperature lor the bonds should be established by the metal band manufacturer due to the expansion Hhe equipment when heotedf
FOR FLAT SURFACES - Hold in place with Id gauge annealed wire or 1/8" wire cobles attached to wel ded rads or studs. Polnt-up with Insulating cement and then apply hexagonal wiro mesh or metal loth over entire surface. Securely fasten down and loce the edges.
FOR IRREGULAR SURFACES - Apply a filler coat of insulating cement to cover the high points of oil ir regularities. Trowel to a level surface before applying blocks. Then follow recommended specifications, above, for flat surfaces. FOR DOUBLE LAYERS - Apply the outer layer so that joints ore staggered from inner layer.
FINISH
MINIMUM INDOOR FINISH - {bos for further finishes.) Apply 1/2" coot of insulating cement.
GOOD INDOOR FINISH - does not require painting. To minimum finish, apply 6 or 8 or. canvas between coats of white logging adhesive.
WEATHER 'ES/ST/WT FU'ISH FOP, OUTDOOR
of o soitabtv asphalt .. ,'n,! bu.j voo..ic rcsis.:> tween coat
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The foregoing is necessarily general in nature. Application procedure and material approval is at ihe discretion and responsibility of the eltsign en gineer to meet specific fob requirements.
SPECIFICATION (Compliance)
HH-l-5?.3a - Insolation Block, Pipe Covering and Cement, Thermal, Calcium Silicate MfL-f-2819 - Insulation, Thermo! Block, Class A and B
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(Armstrong contracting and supply corporation
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