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Spade and Ring Spacer Flange – Uses, Dimensions, and Types

January 30, 2023January 30, 2023 | 1:46 pm

Spade and ring spacer flanges are an essential type of flange used in various applications. They are commonly used in piping systems, valve assemblies, and other mechanical components. Knowing what these spacer flanges are and how they can help you determine if they are the right choice for your project. Let’s take a closer look at the uses, welding, and types of spade and ring spacer flanges.

What is Spade and Ring Spacer Flanges?

Spade and ring spacer flanges are specialized components used in piping systems to temporarily isolate sections for maintenance or repairs. A spade flange is a flat piece of metal inserted between two flanges to block flow, while a ring spacer is similar but has a hole in the center to allow flow. They’re often made of the same material as the adjoining pipe and are bolted in place to create a tight seal. These flanges enable safe working conditions by preventing the flow of fluids during maintenance activities, reducing risks and ensuring operational integrity.

Spade and Ring Spacer Flange Uses

Spade and ring spacer flanges are used to space two sections of pipe or two valves in a piping system apart from each other. This type of flange is also ideal for providing thermal insulation between the pipes or valves. Spacing the sections apart allows heat to dissipate evenly throughout the system instead of concentrating in one particular area. The insulated space also helps prevent corrosion caused by condensation buildup between different surfaces that may come into contact with each other.

Spade and Ring Spacer Flange Welding

Spade and ring spacer flanges need to be welded into place when installing them into a piping system or valve assembly. It is essential to verify that all welding has been completed correctly before putting any pressure on the system, as any leaks could cause major damage or even injury. Welders should be certified for this type of work before attempting to weld these spacer flanges into place.

Spade and Ring Spacer Flange Types

Spade and ring spacer flanges come in several different sizes depending on your application needs. The most common types include blind, socket welded, threaded, slip-on, lap joint, swivel joint, long weld neck, and reducer types. Each type has its own purpose, depending on where it needs to be installed in your system and the type of material it will work with (i.e., steel or stainless steel). It is essential to understand which type you need before purchasing one so that you don’t end up with an incompatible part for your project.

Spade and Ring Spacer Flange Dimensions

Spade and Ring Spacer Flange Dimensions

Pressure Class 150

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 45 16 126 3 32
3/4 54 21 131 3 32
1 64 27 136 3 32
1.1/4 73 42 145 6.4 32
1.1/2 83 48 145 6.4 32
2 102 61 155 6.4 32
2.1/2 107 73 170 6.4 32
3 133 89 170 6.4 32
3.1/2 159 102 202 9.7 38
4 172 114 202 9.7 38
5 194 141 225 9.7 38
6 219 168 225 12.7 38
8 276 219 267 12.7 38
10 337 273 322 15.7 44
12 406 324 357 19.1 44
14 448 356 378 19.1 44
16 511 406 410 22.4 44
18 546 457 427 25.4 51
20 603 508 455 28.4 51
24 714 610 512 31.8 51

Pressure Class 300

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1.1/4 79 42 150 6.4 32
1.1/2 92 48 150 6.4 32
2 108 61 158 9.7 32
2.1/2 127 73 177 9.7 32
3 146 89 177 9.7 32
3.1/2 162 102 205 12.7 38
4 178 114 205 12.7 38
5 213 141 240 15.7 38
6 248 168 240 15.7 38
8 305 219 281 22.4 38
10 359 273 333 25.4 44
12 419 324 363 28.4 44
14 483 356 395 31.8 44
16 536 406 422 38.1 44
18 594 457 450 41.1 51
20 651 508 480 44.5 51
24 772 610 540 50.8 51

Spade and Ring Spacer Flange Dimensions

Pressure Class 600

NPS Outside
Dia
A		 Inside
Dia
B		 Center
End
C		 Thick
ness
t		 Handle
Width
W
1/2 51 16 129 6.4 32
3/4 64 21 136 6.4 32
1 70 27 139 6.4 32
1.1/4 79 37 150 9.7 32
1.1/2 92 43 150 9.7 32
2 108 55 158 9.7 32
2.1/2 127 67 177 12.7 32
3 146 83 177 12.7 32
3.1/2 159 96 211 15.7 38
4 191 108 211 15.7 38
5 238 135 248 19.1 38
6 264 162 248 22.4 38
8 318 212 288 28.4 38
10 397 265 352 35.1 44
12 454 315 381 41.1 44
14 489 346 398 44.5 44
16 562 397 435 50.8 44
18 610 448 459 53.8 51
20 679 497 493 63.5 51
24 787 597 547 73.2 51

Conclusion

In conclusion, understanding how spade and ring spacer flange works are essential when deciding whether or not they are right for your project goals or application needs. Knowing their uses and how they must be welded into place can help you make an informed decision about whether this type of flange is right for you or not based on your individual requirements. With their ability to provide thermal insulation between pipes/valves and their wide range of size options available, it’s easy to see why this type of flange would be beneficial for many projects across various industries, such as plumbing and automotive engineering, among others!

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