Duct Piping Specs

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Seamless, corrosion resistant exhaust duct, IPS sizes 6″ by means of 24″, to be used in corrosive fume dealing with methods at temperatures as much as 200°F. Duct exhibits glorious fire resistance and is categorized for Floor Burning Traits (independently tested flame and smoke traits ULC S102.2 Duct; and FM 4910 Duct Materials). Positive and damaging strain rankings differ with duct diameter and temperature as acknowledged on web page 2 of this specification. Affords exceptional bodily properties, and is usually resistant to most: acids, bases, salts, aliphatic solutions, oxidants, and halogens. Chemical resistance knowledge is available and should be referenced for proper materials selection. Typical purposes include: chemical processing, plating, clean rooms, water and wastewater remedy, laboratory, and different industrial and institutional purposes involving corrosive fume collection, switch, and reclamation.

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Scope
This specification outlines minimal manufacturing necessities for Chlorinated Polyvinyl Chloride (CPVC) iron pipe size (IPS) seamless, extruded spherical duct. This duct is meant to be used in industrial fume handling methods the place temperatures encountered do not exceed 200°F.

CPVC Supplies
The material used in the manufacture of the duct shall be a virgin, inflexible chlorinated polyvinyl chloride (CPVC) compound, with a Cell Classification of 23447 as defined in ASTM D1784. This compound shall be gentle gray in colour, and shall be domestically produced CPVC materials, specifically formulated for the manufacturing of CPVC duct, tradename Corzan® CPVC as supplied by Lubrizol Advanced Supplies. This materials meets FM 4910 Clean Room Materials Flammability Take a look at protocol as outlined on page 2 of this specification.

Dimensions
All CPVC extruded duct shall be manufactured in strict accordance to the requirements established by GF Harvel for the production of extruded duct piping; including the bodily dimensions and tolerances as acknowledged on Web page 2 of this Specification.

Marking
Product marking shall include: the manufacturers title (or the manufacturers trademark when privately labeled); the nominal duct size; the material designation, date of manufacture, and the impartial laboratory’s label stating flammability characteristics where relevant.

Dimensional Specifications

MAX. Inside Destructive Stress Ranking
Inches of Water @ Varied Temperatures °F
SIZETEMPERATURE °F
738090100110120130140
6″ x 1/eight 115 a hundred and one 86 71 fifty nine forty six 36 25
6″ 415 365 311 257 212 166 129 91
7″ 301 265 226 187 153 a hundred and twenty ninety three sixty six
8″ 188 166 141 117 96 seventy five 58 41
9″ 146 129 110 91 75 59 forty five 32
10″ ninety seven 85 73 60 50 39 30 21
eleven” 82 72 sixty one 51 forty two 33 25 18
12″ 58 fifty one 44 36 30 23 18 13
14″ forty four 39 33 27 22 18 14 10
sixteen” 29 26 22 18 15 12 9 6
18″ 21 18 16 13 11 8 6 four
20″ 24 21 18 15 12 10 7 5
24″ 21 18 sixteen 13 11 eight 6 4
PSI = Inches of Water x .0361; Inches of Mercury = Inches of Water x .07355

MAX. Internal Optimistic Stress Ranking
PSI @ Various Temperatures °F
SIZETEMPERATURE °F
738090100110120130140
6″ x 1/8 forty two 37 31 26 21 17 thirteen 9
6″ 70 62 fifty two 43 35 28 22 15
7″ sixty four 56 48 40 32 25 20 14
eight” 53 forty seven 40 33 27 21 16 12
9″ seventy four 65 fifty five forty six 38 29 23 16
10″ 43 39 32 27 22 17 thirteen 9
11″ sixty one fifty three 46 38 31 24 19 thirteen
12″ 36 32 27 22 18 14 eleven 8
14″ 33 29 25 20 17 thirteen 10 7
sixteen” 28 25 21 17 14 eleven 9 6
18″ 25 22 19 15 13 10 eight 5
20″ 26 23 20 16 thirteen 10 eight 6
24″ 25 22 19 15 13 10 eight 5

Common Recommendations

Joining
Thermal welding shall be carried out by personnel adequately skilled within the art of CPVC welding utilizing the hot fuel fusion welding technique utilizing CPVC filler welding rod as manufactured for this objective.

When solvent cemented connections are utilized, the usage of an additional heavy bodied CPVC solvent cement (similar to IPS 729) and acceptable primer is really useful due to tolerance extremes that may be encountered when working with duct and fabricated duct fittings. Proper solvent cement joining procedures shall be followed.

Hangers and Helps
Hangers selected shall have an adequate load-bearing floor free of tough or sharp edges and shall not cause injury to the duct throughout use. Hangers and hanger hardware shall be of a corrosive resistant material appropriate to be used in the system environment.

Ductwork is to be supported independently of hoods, scrubbers, fans, tanks or different equipment wherever attainable. Where flexible connections are supplied as expansion joints a suitable hanger or support shall be supplied at each end of the flexible connection. Consideration shall be given to the potential for solids accumulation; enough system assist shall be supplied the place required.

Drains shall be put in the place accumulation of moisture is expected at low points within the system as indicated on the drawings.

Hearth Efficiency

Handling and Storage
Care shall be used when transporting and storing duct to forestall physical distortion. Duct shall not be stored near heat producing sources, subjected to external loads, or over stacked when saved. Damaged sections should be reduce out and discarded.

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