# Spades and Ring Spacer Flange

The term “Spades and Ring Spacer Flange” seems to pertain to specific components used in piping and mechanical systems. Here’s a breakdown of each term in this context: |

**Spades**: In industrial and piping contexts, “spades” refer to a type of blind flange or plate used to block the flow of fluid in a pipeline. They are often used for isolation purposes during maintenance or repair work. Spades are typically flat and have no openings, effectively sealing off the pipe.**Ring**: In this context, the “ring” could be a ring gasket or a ring spacer. A ring gasket is used to create a seal between two flanges, preventing leakage of fluids. A ring spacer is used to provide a specific spacing between components, often to accommodate different thicknesses or align parts correctly.**Spacer Flange**: A spacer flange is a component that fits between two flanges to extend the distance between them. It allows for adjustments in alignment or spacing and can also help in reducing vibrations or accommodating thermal expansion.

When combined as “Spades and Ring Spacer Flange,” this likely refers to an assembly or configuration that includes:

**Spades**: To block or isolate sections of a pipeline.**Ring**: To provide sealing or spacing functions.**Spacer Flange**: To adjust the distance between flanges or components.

In practice, such an assembly might be used in a pipeline system where spades are inserted to isolate a section for maintenance, while ring spacers and spacer flanges are used to ensure proper alignment and spacing between flanged connections.

##### Dimensions of Class 150 Spades for Series A Flanges A285 GrC

Table below provides spade and spacer dimensions made from ASTM A285 GrC plates for use on Class 150 Series A flanges.

Read the section at the bottom of table for basis of the calculations for dimensions of spade and spacer.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 150 Series A Flanges – Material of Spade and Spacer: ASTM A285 GrC**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 1.45 | 36.92 | 39.92 | 769 | 647 | 510 | 50 |

28 | 711.2 | 1.57 | 39.76 | 42.76 | 827 | 698 | 540 | 55 |

30 | 762 | 1.68 | 42.60 | 45.60 | 877 | 749 | 565 | 60 |

32 | 812.8 | 1.79 | 45.44 | 48.44 | 935 | 800 | 605 | 60 |

34 | 863.6 | 1.90 | 48.28 | 51.28 | 986 | 850 | 630 | 60 |

36 | 914.4 | 2.01 | 51.12 | 54.12 | 1043 | 901 | 660 | 60 |

38 | 965.2 | 2.12 | 53.96 | 56.96 | 1106 | 952 | 695 | 60 |

40 | 1016 | 2.24 | 56.80 | 59.80 | 1157 | 1003 | 720 | 60 |

42 | 1066.8 | 2.35 | 59.64 | 62.64 | 1214 | 1054 | 750 | 60 |

44 | 1117.6 | 2.46 | 62.48 | 65.48 | 1271 | 1104 | 775 | 60 |

46 | 1168.4 | 2.57 | 65.32 | 68.32 | 1322 | 1155 | 800 | 60 |

48 | 1219.2 | 2.68 | 68.16 | 71.16 | 1379 | 1206 | 855 | 60 |

50 | 1270 | 2.80 | 71.00 | 74.00 | 1430 | 1257 | 885 | 60 |

52 | 1320.8 | 2.91 | 73.83 | 76.83 | 1487 | 1308 | 915 | 60 |

54 | 1371.6 | 3.02 | 76.67 | 79.67 | 1544 | 1358 | 940 | 60 |

56 | 1422.4 | 3.13 | 79.51 | 82.51 | 1601 | 1409 | 975 | 60 |

58 | 1473.2 | 3.24 | 82.35 | 85.35 | 1658 | 1460 | 1000 | 60 |

60 | 1524 | 3.35 | 85.19 | 88.19 | 1709 | 1511 | 1025 | 60 |

## Basis for calculation of Spade and Spacer Dimensions

Spades are used in piping systems to positively isolate sections of piping from one another. The spades are subject to the design pressure and hence the thickness of spades must be able to withstand the design pressure. As per para. 304.5.3(b) of ASME B31.3, the minimum required thickness of a permanent blank shall be calculated in accordance with following equation:

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

d_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

In the calculation of spade thickness, we adopted a slightly different approach which provides conservative values. We know from para. 2.5 of ASME B16.5 that line blanks may be subjected to system tests at a pressure not to exceed 1.5 times the 38°C (100°F) rating rounded off to the next higher 1 bar (25 psi) increment. In the calculation we used a value of P that corresponds to the hydrostatic test pressure (1.5 x Flange Rating Pressure) rounded of to the next higher 25 psi increment.

For Class 150 the value of P considered is 450 psi (285psi x 1.5 = 427.5psi rounded to 450psi)

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM A285 GrC material as per Table A-1 of ASME B31.3 is 30000 psi. Hence the value of allowable stress S = 30000 psi. E and W are considered as 1 in the equation.

Outside diameter of spade and spacer is calculated as bolt circle diameter of flange minus the bolt hole diameter-1.5mm.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

Dimension B is calculated considering a projection of 75mm of center of handle hole from outside diameter of flange for sizes up to 46 inches and 100mm projection for sizes 48 inches and above.

While calculating dimension ‘C’ it is checked that the spade and spacer handle can pass through the gap between two adjacent bolts.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 300 Spades for Series A Flanges A285 GrC

Table below provides spade and spacer dimensions made from ASTM A285 GrC plates for use on Class 300 Series A flanges.

Read the section at the bottom of table for basis of the calculations for dimensions of spade and spacer.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 300 Series A Flanges – Material of Spade and Spacer: ASTM A285 GrC**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 2.30 | 58.37 | 61.37 | 830 | 647 | 515 | 60 |

28 | 711.2 | 2.47 | 62.86 | 65.86 | 893 | 698 | 545 | 55 |

30 | 762 | 2.65 | 67.35 | 70.35 | 947 | 749 | 575 | 55 |

32 | 812.8 | 2.83 | 71.84 | 74.84 | 1001 | 800 | 600 | 55 |

34 | 863.6 | 3.01 | 76.33 | 79.33 | 1052 | 850 | 625 | 50 |

36 | 914.4 | 3.18 | 80.82 | 83.82 | 1113 | 901 | 655 | 55 |

38 | 965.2 | 3.36 | 85.31 | 88.31 | 1049 | 952 | 625 | 55 |

40 | 1016 | 3.54 | 89.80 | 92.80 | 1109 | 1003 | 655 | 55 |

42 | 1066.8 | 3.71 | 94.29 | 97.29 | 1160 | 1054 | 680 | 55 |

44 | 1117.6 | 3.89 | 98.78 | 101.78 | 1214 | 1104 | 705 | 45 |

46 | 1168.4 | 4.07 | 103.27 | 106.27 | 1268 | 1155 | 735 | 45 |

48 | 1219.2 | 4.24 | 107.76 | 110.76 | 1319 | 1206 | 760 | 40 |

50 | 1270 | 4.42 | 112.25 | 115.25 | 1373 | 1257 | 785 | 45 |

52 | 1320.8 | 4.60 | 116.74 | 119.74 | 1424 | 1308 | 810 | 45 |

54 | 1371.6 | 4.77 | 121.23 | 124.23 | 1487 | 1358 | 845 | 45 |

56 | 1422.4 | 4.95 | 125.72 | 128.72 | 1538 | 1409 | 870 | 40 |

58 | 1473.2 | 5.13 | 130.21 | 133.21 | 1589 | 1460 | 895 | 40 |

60 | 1524 | 5.30 | 134.70 | 137.70 | 1639 | 1511 | 920 | 40 |

## Basis for calculation of Spade and Spacer Dimensions

Spades are used in piping systems to positively isolate sections of piping from one another. The spades are subject to the design pressure and hence the thickness of spades must be able to withstand the design pressure. As per para. 304.5.3(b) of ASME B31.3, the minimum required thickness of a permanent blank shall be calculated in accordance with following equation:

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

d_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

In the calculation of spade thickness, we adopted a slightly different approach which provides conservative values. We know from para. 2.5 of ASME B16.5 that line blanks may be subjected to system tests at a pressure not to exceed 1.5 times the 38°C (100°F) rating rounded off to the next higher 1 bar (25 psi) increment. In the calculation we used a value of P that corresponds to the hydrostatic test pressure (1.5 x Flange Rating Pressure) rounded of to the next higher 25 psi increment.

For Class 300 the value of P considered is 1125 psi (750psi x 1.5 = 1125ps

##### Dimensions of Class 600 Spades for Series A Flanges A285 GrC

Table below provides spade and spacer dimensions made from ASTM A285 GrC plates for use on Class 600 Series A flanges.

Read the section at the bottom of table for basis of the calculations for dimensions of spade and spacer.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 600 Series A Flanges – Material of Spade and Spacer: ASTM A285 GrC**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 3.25 | 82.55 | 85.55 | 862 | 647 | 530 | 45 |

28 | 711.2 | 3.50 | 88.90 | 91.90 | 909 | 698 | 555 | 50 |

30 | 762 | 3.75 | 95.25 | 98.25 | 967 | 749 | 585 | 55 |

32 | 812.8 | 4.00 | 101.60 | 104.60 | 1017 | 800 | 610 | 55 |

34 | 863.6 | 4.25 | 107.95 | 110.95 | 1068 | 850 | 635 | 55 |

36 | 914.4 | 4.50 | 114.30 | 117.30 | 1125 | 901 | 665 | 55 |

38 | 965.2 | 4.75 | 120.65 | 123.65 | 1100 | 952 | 650 | 55 |

40 | 1016 | 5.00 | 127.00 | 130.00 | 1150 | 1003 | 675 | 55 |

42 | 1066.8 | 5.25 | 133.35 | 136.35 | 1214 | 1054 | 705 | 60 |

44 | 1117.6 | 5.50 | 139.70 | 142.70 | 1265 | 1104 | 735 | 60 |

46 | 1168.4 | 5.75 | 146.05 | 149.05 | 1322 | 1155 | 760 | 60 |

48 | 1219.2 | 6.00 | 152.40 | 155.40 | 1385 | 1206 | 795 | 60 |

50 | 1270 | 6.25 | 158.75 | 161.75 | 1443 | 1257 | 820 | 60 |

52 | 1320.8 | 6.50 | 165.10 | 168.10 | 1494 | 1308 | 845 | 60 |

54 | 1371.6 | 6.75 | 171.45 | 174.45 | 1551 | 1358 | 875 | 60 |

56 | 1422.4 | 7.00 | 177.80 | 180.80 | 1608 | 1409 | 905 | 60 |

58 | 1473.2 | 7.25 | 184.15 | 187.15 | 1658 | 1460 | 930 | 60 |

60 | 1524 | 7.50 | 190.50 | 193.50 | 1729 | 1511 | 965 | 60 |

## Basis for calculation of Spade and Spacer Dimensions

Spades are used in piping systems to positively isolate sections of piping from one another. The spades are subject to the design pressure and hence the thickness of spades must be able to withstand the design pressure. As per para. 304.5.3(b) of ASME B31.3, the minimum required thickness of a permanent blank shall be calculated in accordance with following equation:

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

d_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

In the calculation of spade thickness, we adopted a slightly different approach which provides conservative values. We know from para. 2.5 of ASME B16.5 that line blanks may be subjected to system tests at a pressure not to exceed 1.5 times the 38°C (100°F) rating rounded off to the next higher 1 bar (25 psi) increment. In the calculation we used a value of P that corresponds to the hydrostatic test pressure (1.5 x Flange Rating Pressure) rounded of to the next higher 25 psi increment.

For Class 600 the value of P considered is 2250 psi (1500psi x 1.5 = 2250psi)

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM A285 GrC material as per Table A-1 of ASME B31.3 is 30000 psi. Hence the value of allowable stress S = 27000 psi. E and W are considered as 1 in the equation.

Outside diameter of spade and spacer is calculated as bolt circle diameter of flange minus the bolt hole diameter-1.5mm.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

Dimension B is calculated considering a projection of 75mm of center of handle hole from outside diameter of flange for sizes up to 46 inches and 100mm projection for sizes 48 inches and above.

While calculating dimension ‘C’ it is checked that the spade and spacer handle can pass through the gap between two adjacent bolts.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 900 Spades for Series A Flanges A285 GrC

Table below provides spade and spacer dimensions made from ASTM A285 GrC plates for use on Class 900 Series A flanges.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 900 Series A Flanges – Material of Spade and Spacer: ASTM A285 GrC**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 3.98 | 101.10 | 104.10 | 877 | 647 | 540 | 65 |

28 | 711.2 | 4.29 | 108.88 | 111.88 | 941 | 698 | 570 | 65 |

30 | 762 | 4.59 | 116.66 | 119.66 | 1005 | 749 | 605 | 65 |

32 | 812.8 | 4.90 | 124.43 | 127.43 | 1068 | 800 | 635 | 65 |

34 | 863.6 | 5.21 | 132.21 | 135.21 | 1132 | 850 | 665 | 65 |

36 | 914.4 | 5.51 | 140.00 | 142.99 | 1195 | 901 | 700 | 65 |

38 | 965.2 | 5.82 | 147.77 | 150.77 | 1195 | 952 | 700 | 65 |

40 | 1016 | 6.12 | 155.54 | 158.54 | 1246 | 1003 | 725 | 65 |

42 | 1066.8 | 6.43 | 163.32 | 166.32 | 1297 | 1054 | 750 | 65 |

44 | 1117.6 | 6.74 | 171.10 | 174.10 | 1363 | 1104 | 780 | 65 |

46 | 1168.4 | 7.04 | 178.87 | 181.87 | 1430 | 1155 | 815 | 65 |

48 | 1219.2 | 7.35 | 186.65 | 189.65 | 1481 | 1206 | 840 | 65 |

## Basis for calculation of Spade and Spacer Dimensions

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

For Class 900 the value of P considered is 3375psi (2250psi x 1.5 = 3375psi)

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM ASTM A285 GrC material as per Table A-1 of ASME B31.3 is 30000 psi. Hence the value of allowable stress S = 27000 psi. E and W are considered as 1 in the equation.

Outside diameter of spade and spacer is calculated as bolt circle diameter of flange minus the bolt hole diameter-1.5mm.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

Dimension B is calculated considering a projection of 75mm of center of handle hole from outside diameter of flange for sizes up to 46 inches and 100mm projection for sizes 48 inches and above.

While calculating dimension ‘C’ it is checked that the spade and spacer handle can pass through the gap between two adjacent bolts.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 150 Spades for Series A Flanges A516 Gr70

Table below provides spade and spacer dimensions for use on Class 150 Series A flanges.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 150 Series A Flanges – Material of Spade and Spacer: ASTM A516 Gr70**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 1.29 | 32.80 | 35.80 | 769 | 647 | 510 | 50 |

28 | 711.2 | 1.39 | 35.33 | 38.33 | 827 | 698 | 540 | 55 |

30 | 762 | 1.49 | 37.85 | 40.85 | 877 | 749 | 565 | 60 |

32 | 812.8 | 1.59 | 40.37 | 43.37 | 935 | 800 | 605 | 60 |

34 | 863.6 | 1.69 | 42.89 | 45.89 | 986 | 850 | 630 | 60 |

36 | 914.4 | 1.79 | 45.42 | 48.42 | 1043 | 901 | 660 | 60 |

38 | 965.2 | 1.89 | 47.94 | 50.94 | 1106 | 952 | 695 | 60 |

40 | 1016 | 1.99 | 50.46 | 53.46 | 1157 | 1003 | 720 | 60 |

42 | 1066.8 | 2.09 | 52.99 | 55.99 | 1214 | 1054 | 750 | 60 |

44 | 1117.6 | 2.19 | 55.51 | 58.51 | 1271 | 1104 | 775 | 60 |

46 | 1168.4 | 2.28 | 58.03 | 61.03 | 1322 | 1155 | 800 | 60 |

48 | 1219.2 | 2.38 | 60.56 | 63.56 | 1379 | 1206 | 855 | 60 |

50 | 1270 | 2.48 | 63.08 | 66.08 | 1430 | 1257 | 885 | 60 |

52 | 1320.8 | 2.58 | 65.60 | 68.60 | 1487 | 1308 | 915 | 60 |

54 | 1371.6 | 2.68 | 68.13 | 71.13 | 1544 | 1358 | 940 | 60 |

56 | 1422.4 | 2.78 | 70.65 | 73.65 | 1601 | 1409 | 975 | 60 |

58 | 1473.2 | 2.88 | 73.17 | 76.17 | 1658 | 1460 | 1000 | 60 |

60 | 1524 | 2.98 | 75.70 | 78.70 | 1709 | 1511 | 1025 | 60 |

## Basis for calculation of Spade and Spacer Dimensions

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

For Class 150 the value of P considered is 450 psi (285psi x 1.5 = 427.5psi rounded to 450psi)

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM A516 Gr70 material as per Table A-1 of ASME B31.3 is 38000 psi. Hence the value of allowable stress S = 34200 psi. E and W are considered as 1 in the equation.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 300 Spades for Series A Flanges A516 Gr70

Table below provides spade and spacer dimensions made from ASTM A516 Gr70 plates for use on Class 300 Series A flanges.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 300 Series A Flanges – Material of Spade and Spacer: ASTM A516 Gr70**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 2.04 | 51.86 | 54.86 | 830 | 647 | 515 | 60 |

28 | 711.2 | 2.20 | 55.85 | 58.85 | 893 | 698 | 545 | 55 |

30 | 762 | 2.36 | 59.84 | 62.84 | 947 | 749 | 575 | 55 |

32 | 812.8 | 2.51 | 63.83 | 66.83 | 1001 | 800 | 600 | 55 |

34 | 863.6 | 2.67 | 67.82 | 70.82 | 1052 | 850 | 625 | 50 |

36 | 914.4 | 2.83 | 71.81 | 74.81 | 1113 | 901 | 655 | 55 |

38 | 965.2 | 2.98 | 75.80 | 78.80 | 1049 | 952 | 625 | 55 |

40 | 1016 | 3.14 | 79.79 | 82.79 | 1109 | 1003 | 655 | 55 |

42 | 1066.8 | 3.30 | 83.78 | 86.78 | 1160 | 1054 | 680 | 55 |

44 | 1117.6 | 3.46 | 87.77 | 90.77 | 1214 | 1104 | 705 | 45 |

46 | 1168.4 | 3.61 | 91.76 | 94.76 | 1268 | 1155 | 735 | 45 |

48 | 1219.2 | 3.77 | 95.75 | 98.75 | 1319 | 1206 | 760 | 40 |

50 | 1270 | 3.93 | 99.74 | 102.74 | 1373 | 1257 | 785 | 45 |

52 | 1320.8 | 4.08 | 103.73 | 106.73 | 1424 | 1308 | 810 | 45 |

54 | 1371.6 | 4.24 | 107.72 | 110.72 | 1487 | 1358 | 845 | 45 |

56 | 1422.4 | 4.40 | 111.71 | 114.71 | 1538 | 1409 | 870 | 40 |

58 | 1473.2 | 4.56 | 115.70 | 118.70 | 1589 | 1460 | 895 | 40 |

60 | 1524 | 4.71 | 119.69 | 122.69 | 1639 | 1511 | 920 | 40 |

## Basis for calculation of Spade and Spacer Dimensions

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

For Class 300 the value of P considered is 1125 psi (750psi x 1.5 = 1125psi).

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM A516 Gr70 material as per Table A-1 of ASME B31.3 is 38000 psi. Hence the value of allowable stress S = 34200 psi. E and W are considered as 1 in the equation.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 600 Spades for Series A Flanges A516 Gr70

Table below provides spade and spacer dimensions made from ASTM A516 Gr70 plates for use on Class 600 Series A flanges.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 600 Series A Flanges – Material of Spade and Spacer: ASTM A516 Gr70**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 2.89 | 73.35 | 76.35 | 862 | 647 | 530 | 45 |

28 | 711.2 | 3.11 | 78.99 | 81.99 | 909 | 698 | 555 | 50 |

30 | 762 | 3.33 | 84.63 | 87.63 | 967 | 749 | 585 | 55 |

32 | 812.8 | 3.55 | 90.27 | 93.27 | 1017 | 800 | 610 | 55 |

34 | 863.6 | 3.78 | 95.92 | 98.92 | 1068 | 850 | 635 | 55 |

36 | 914.4 | 4.00 | 101.56 | 104.56 | 1125 | 901 | 665 | 55 |

38 | 965.2 | 4.22 | 107.20 | 110.20 | 1100 | 952 | 650 | 55 |

40 | 1016 | 4.44 | 112.84 | 115.84 | 1150 | 1003 | 675 | 55 |

42 | 1066.8 | 4.66 | 118.48 | 121.48 | 1214 | 1054 | 705 | 60 |

44 | 1117.6 | 4.89 | 124.13 | 127.13 | 1265 | 1104 | 735 | 60 |

46 | 1168.4 | 5.11 | 129.77 | 132.77 | 1322 | 1155 | 760 | 60 |

48 | 1219.2 | 5.33 | 135.41 | 138.41 | 1385 | 1206 | 795 | 60 |

50 | 1270 | 5.55 | 141.05 | 144.05 | 1443 | 1257 | 820 | 60 |

52 | 1320.8 | 5.78 | 146.70 | 149.70 | 1494 | 1308 | 845 | 60 |

54 | 1371.6 | 6.00 | 152.34 | 155.34 | 1551 | 1358 | 875 | 60 |

56 | 1422.4 | 6.22 | 157.98 | 160.98 | 1608 | 1409 | 905 | 60 |

58 | 1473.2 | 6.44 | 163.62 | 166.62 | 1658 | 1460 | 930 | 60 |

60 | 1524 | 6.66 | 169.26 | 172.26 | 1729 | 1511 | 965 | 60 |

## Basis for calculation of Spade and Spacer Dimensions

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

For Class 600 the value of P considered is 2250 psi (1500psi x 1.5 = 2250psi)

The value of allowable stress is taken as 90% SMYS of the material. The SMYS for ASTM A516 Gr70 material as per Table A-1 of ASME B31.3 is 38000 psi. Hence the value of allowable stress S = 34200 psi. E and W are considered as 1 in the equation.

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.

##### Dimensions of Class 900 Spades for Series A Flanges A516 Gr70

Table below provides spade and spacer dimensions made from ASTM A516 Gr70 plates for use on Class 900 Series A flanges.

All dimensions are in “mm” unless noted otherwise.

**Table for Class 900 Series A Flanges – Material of Spade and Spacer: ASTM A516 Gr70**

Nom Size Inches | Pipe OD mm | Pressure Thickness of Spade Inches | Pressure Thickness of Spade mm | Pressure Thickness + 3mm ‘T’ | OD of Spade Spacer mm ‘A’ | ID of Spacer mm ‘D’ | Dimension mm ‘B’ | Dimension mm ‘C’ |
---|---|---|---|---|---|---|---|---|

26 | 660.4 | 3.54 | 89.83 | 92.83 | 877 | 647 | 540 | 65 |

28 | 711.2 | 3.81 | 96.74 | 99.74 | 941 | 698 | 570 | 65 |

30 | 762 | 4.08 | 103.65 | 106.65 | 1005 | 749 | 605 | 65 |

32 | 812.8 | 4.35 | 110.56 | 113.56 | 1068 | 800 | 635 | 65 |

34 | 863.6 | 4.62 | 117.47 | 120.47 | 1132 | 850 | 665 | 65 |

36 | 914.4 | 4.90 | 124.38 | 127.38 | 1195 | 901 | 700 | 65 |

38 | 965.2 | 5.17 | 131.29 | 134.29 | 1195 | 952 | 700 | 65 |

40 | 1016 | 5.44 | 138.20 | 141.20 | 1246 | 1003 | 725 | 65 |

42 | 1066.8 | 5.71 | 145.11 | 148.11 | 1297 | 1054 | 750 | 65 |

44 | 1117.6 | 5.99 | 152.02 | 155.02 | 1363 | 1104 | 780 | 65 |

46 | 1168.4 | 6.26 | 158.93 | 161.93 | 1430 | 1155 | 815 | 65 |

48 | 1219.2 | 6.53 | 165.84 | 168.84 | 1481 | 1206 | 840 | 65 |

## Basis for calculation of Spade and Spacer Dimensions

t_{m} = d_{g}3P16SEW−−−−−√3P16SEW + c

where

c = sum of allowances (mechanical + corrosion + mill tolerance)

_{g} = inside diameter of gasket for raised or flat face flanges, or gasket pitch diameter for ring joint and full retained gasketed flanges.

E = quality factor from Table A-1A or A-1B

P = design gage pressure

S = allowable stress value for material from Table A-1

W = weld strength reduction factor

For Class 900 the value of P considered is 3375psi (2250psi x 1.5 = 3375psi)

Inside diameter of spacer is calculated as pipe outside diameter minus 6.35 mm.

The thickness of spade excludes the projection for raised face.

Thickness T in table above assumes sum of allowances ‘c’ of 3mm.