Table of Contents - Flexitallic spiral wound gasketflexital Flexitallic does not generally recommend

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Transcript of Table of Contents - Flexitallic spiral wound gasketflexital Flexitallic does not generally recommend

  • Table of Contents

    Quick Gasket Reference .........................................1 Spiral Wound Gasket Identification

    Ring Color Coding ..............................................7 Non-metallic Filler Materials ...............................9 Metallic Winding Materials ..................................9 Flange Face Designs ..........................................11

    Gasket Assembly, Bolting and Compression Gasket Installation and Surface Finish Recommendations ......................13 Bolting Recommendations ..................................17 Gasket Installation, Torque Sequence ................19

    Torque Data Required Gasket Compression for Spiral Wound Gaskets ...................................27 Torque Data Technical Notes ..............................29 Torque Data: Spiral Wound CG ..........................31 Torque Data: Spiral Wound CGI .........................37 Torque Data: Thermiculite 715 ............................43 Torque Data: Thermiculite 815 ............................45 Torque Data: Flexpro ..........................................47

    Bolting Data ASME B16.5 & BS1560 Flanges ........................53

    Legal Disclaimer ......................................................67

  • Quick Gasket Reference 1

    » High Temperature up to 1800° F (982°C)

    » Replaces Flexible Graphite » Fire Safe » 150# - 2500# class flanges

    845 Flexpro™ (Kammprofile)

    CGI Spiral WoundCG Spiral Wound

  • Quick Gasket Reference 3

    Sigma 500 Moderate Acids & Caustics,

    Chlorine, Hydrogen Peroxide, Sulfuric Acid

    Sigma 511 Strong Acids

    Sigma 533 Strong Caustics

    » Aggressive Chemicals » pH 0-14 » Max Temp: 500° F (260°C) » 150# - 300# class flanges

  • Quick Gasket Reference 5

    SF2401 General Service

    up to 662° F (350°C)

    Sigma 600 Aggressive Chemicals Non-metallic flanges

    Max Temp: 500°F (260°C) pH 0-14

    Thermiculite 715 Replaces All Fiber and Graphite Gaskets up to

    850°F (454°C)

    Thermiculite 815 Replaces All Fiber and Graphite Gaskets up to

    1800°F (982°C)

  • Quick Gasket Reference 7

    Ring Color Coding Gaskets are color coded to help expedite the selection and identification of the gaskets you need.

    The color of the outside edge of the centering ring identifies both the winding and filler materials.

    The metallic winding filler materials are designated by color stripes at equal intervals on the outside edge of the centering ring.

    The Flexitallic color code meets the industry standard for metal and filler materials which has been adopted by ASME B16.20 and the Metallic Gasket division of the Fluid Sealing Association.

    Yellow Ring

    Solid Green = 316L

    Grey = Flexicarb

    Spiral Wound Gasket Identification 7

  • Quick Gasket Reference 9Spiral Wound Gasket Identification 9

    304SS

    316L SS

    317L

    321SS

    347SS

    No Color 310SS

    No Color 304LSS

    No Color 309SS

    No Color 430SS

    Alloy 20

    Titanium

    Inconel 600/625

    Incoloy 800/825

    No Color Inconel X750

    Hastelloy C276

    Hastelloy B2

    Nickel 200

    No Color Zirconium

    Carbon Steel

    Monel

    Non-metallic Filler Materials

    Metallic Winding Materials

    PTFE Flexicarb

    Flexite Super

    Ceramic Thermiculite 735 Thermiculite 835

  • Flange Face Designs

    Spiral Wound Gasket Identification 11

  • Quick Gasket Reference 13Gasket Assembly, Bolting and Compression 13

    Flange Inspection 1. Ensure flange faces are clean and free from imperfections.

    These could be detrimental to the sealing performance.

    2. Carefully remove any solid residue from the flanges, using scrapers, wire brush or cloth.

    Gasket Installation, Surface Finish Recommendations

    Gasket Description

    Gasket Cross

    Section

    Flange Surface Finish

    Microinch Ra

    Flange Surface Finish

    Micrometer Ra

    Spiral Wound Gaskets

    125 - 250 3.2 - 6.3

    Flexpro Gaskets

    125 - 250 3.2 - 6.3

    Metallic Serrated Gaskets

    63 MAX 1.6 MAX

    MRG 125 - 250 3.2 - 6.3

  • Gasket Assembly, Bolting and Compression 15

    Gasket Description

    Gasket Cross

    Section

    Flange Surface Finish

    Microinch Ra

    Flange Surface Finish

    Micrometer Ra

    Solid Metal Gaskets

    63 MAX 1.6 MAX

    Metal Jacketed Gaskets

    100 - 125 2.5 MAX

    Soft Cut Sheet

    Gaskets

    Mat’l < 1.5mm Thick 125 - 250

    Mat’l < 1.5mm Thick 3.2 - 6.3

    Mat’l > 1.5mm Thick 125 - 500

    Mat’l > 1.5mm Thick 3.2 - 12.5

    Gasket Installation, Surface Finish Recommendations Continued

    Important: Under no circumstances should flange sealing surfaces be machined in a manner that tool marks would extend radially across the sealing surface. Such tool marks are practically impossible to seal regardless of the type of gasket used.

  • Quick Gasket Reference 17Bolting Recommendations 17

    Bolting Recommendations When utilizing Torque wrenches the use of suitable lubricants on the stud threads and nut bearing faces is recommended, e.g. Molybdenum di-sulphide or Nickel powder anti-seize compounds.

    We recommend a four stage tightening method as follows:

    1. Torque the bolts at 30% of the final loading using the appropriate bolt pattern.

    2. 60% of final load.

    3. 100% of final load.

    4. 100% of final torque using a clockwise pattern.

    100%

    8

    4

    6 2

    7

    3

    51

    8-B olt

    s

  • Gasket Installation, Torque Sequence 19

    8

    4

    6 2

    7

    3

    51

    8-B olt

    s

    8

    4

    10

    6 2

    11

    7

    3

    9

    51

    12

    12 -B

    olt s 8

    12

    4

    14

    6 10 2

    15

    7

    11

    3

    13

    591

    16

    16 -B

    olt s

  • Gasket Installation, Torque Sequence 21

    8

    16

    4

    10

    18

    6 14 2

    11

    19

    7

    15

    3

    9

    17

    5 131

    12 20

    20 -B

    olt s

    20

    12

    4

    22

    14 6

    18 10 2 23 15

    7

    19

    11

    3

    21

    13

    5 179124

    16

    8

    24 -B

    olt s

  • Gasket Installation, Torque Sequence 23

    1 17 9

    25 5

    21

    13

    29

    3

    19

    11

    27

    7 23

    15 31218

    10 26

    6 22

    14

    30

    4

    20

    12

    28

    8

    24 16

    32

    32 -Bo

    lts

    1 2 3 4 17

    18

    20

    33

    36

    9

    10

    12 28

    27 26

    25 4241

    87 6

    5 21

    22 23

    24

    37

    38

    39

    40

    13

    14 19

    11

    35

    34

    4443

    29 16

    15

    3231 30

    44 -Bo

    lts

  • Gasket Installation, Torque Sequence 25

    1 2 3 4 50

    51

    25

    27

    10 11

    41

    17 18

    19 20

    33 876

    556 55

    54 53

    29

    32

    15 14 13 45 46

    47

    52

    44

    9

    28

    3435

    22 21

    48

    37 24

    23

    36

    16

    31 30

    12

    43 42

    49

    26

    403938

    56 -Bo

    lts

    1 2

    43

    67

    63 64

    9 10

    11 12 36 35 34 33 56

    55 54

    53 20

    19 18

    17 48

    47 46

    454 3

    26 27 28

    61 62

    2544

    666532 31

    30 29

    40 39

    38 37

    13 14 15 16 57 58 59 60

    21 22

    23 24

    49 50

    51 52

    5 6 7 8 4241

    68

    68 -Bo

    lts

  • Required Gasket Compression 27

    Required Gasket Compression for Spiral Wound Gaskets Spiral Wound Gaskets with internal or external rings, i.e. Styles ‘CG’ and ‘CGI’ can be compressed to the ring thickness, if necessary. This will not damage the gasket or affect the sealing performance and the ring is provided as a compression limiting stop.

    For optimum performance Flexitallic Spiral Wound Gaskets should be compressed to these thicknesses.

    INITIAL GASKET THICKNESS

    RECOMMENDED COMPRESSED THICKNESS

    1.6 mm (0.0625 in) 1.3/1.4 mm (0.050/0.055 in)

    2.5 mm (0.100 in) 1.9/2.0 mm (0.075/0.080 in)

    3.2 mm (0.125 in) 2.3/2.5 mm (0.090/0.100 in)

    4.4 mm (0.175 in) 3.2/3.4 mm (0.125/0.135 in)

    6.4 mm (0.250 in) 4.6/5.1 mm (0.180/0.200 in)

    7.2 mm (0.285 in) 5.1/5.6 mm (0.200/0.220 in)

  • Torque Data Technical Notes 29

    Torque Data Technical Notes Torque Values are in ft.-lbs., and assume Alloy Steel Bolts (A193 B7 w/ 2H Nuts) with oil/graphite lubrication.

    (Nut factors used on these charts are within .15 to .19)

    Flexitallic does not generally recommend a bolt stress above 60,000 PSI