Tapered Bore Ring Spacer
Tapered Bore Ring Spacer
Tapered Bore Ring Spacers, Also known as BFB or beveled for butterfly spacers, are specially machined with a beveled inner diameter to accommodate butterfly valve discs. This ensures smooth operation, prevents disc interference, and maintains consistent flow performance, making them essential in valve-adjacent applications.
- Polypropylene (PP) – Cost-effective and lightweight
- PTFE (Teflon®) – Exceptional chemical and temperature resistance
- PVDF (Kynar®) – Flame resistant and UV stable with broad chemical compatibility
| Size | A | B | C | D |
|---|---|---|---|---|
| 1 | 2.63 | 1.06 | 1.06 | .50 |
| 1 1/2 | 3.38 | 1.63 | 1.31 | .50 |
| 2 | 4.13 | 2.25 | 1.75 | .50 |
| 3 | 5.38 | 3.00 | 2.69 | .50 |
| 4 | 6.88 | 4.00 | 3.62 | .50 |
| 6 | 8.75 | 6.00 | 5.56 | 1.00 |
| 8 | 11.00 | 8.25 | 7.62 | 1.00 |
| 10 | 13.38 | 10.00 | 9.56 | 1.25 |
| 12 | 16.12 | 11.62 | 11.62 | 1.25 |
Full face tapered bore spacers (not shown) also available.
Note: Tapered bore spacers are beveled for use with a butterfly valve.
All sizes and thicknesses are listed in inches.
Our specs are for lined pipe dimensions. Any spacer can be customized to your specifications.
Tapered Bore Ring Spacer – Polypropylene
Size and Part # for ordering
| Size | Thickness | |||||
|---|---|---|---|---|---|---|
| ½” | ¾” | 1” | 1¼” | 1½” | 2” | |
| 1” | #5111 | #5112 | #5113 | #5114 | #5115 | #5116 |
| 1½” | #5121 | #5122 | #5123 | #5124 | #5125 | #5126 |
| 2” | #5131 | #5132 | #5133 | #5134 | #5135 | #5136 |
| 3” | #5141 | #5142 | #5143 | #5144 | #5145 | #5146 |
| 4” | #5151 | #5152 | #5153 | #5154 | #5155 | #5156 |
| 6” | #5161 | #5162 | #5163 | #5164 | #5165 | #5166 |
| 8” | #5171 | #5172 | #5173 | #5174 | #5175 | #5176 |
| 10” | #5181 | #5182 | #5183 | #5184 | #5185 | #5186 |
| 12” | #5191 | #5192 | #5193 | #5194 | #5195 | #5196 |
Tapered Bore Ring Spacer – PVDF (Kynar®)
Size and Part # for ordering
| Size | Thickness | |||||
|---|---|---|---|---|---|---|
| ½” | ¾” | 1” | 1¼” | 1½” | 2” | |
| 1” | #5211 | #5212 | #5213 | #5214 | #5215 | #5216 |
| 1½” | #5221 | #5222 | #5223 | #5224 | #5225 | #5226 |
| 2” | #5231 | #5232 | #5233 | #5234 | #5235 | #5236 |
| 3” | #5241 | #5242 | #5243 | #5244 | #5245 | #5246 |
| 4” | #5251 | #5252 | #5253 | #5254 | #5255 | #5256 |
| 6” | #5261 | #5262 | #5263 | #5264 | #5265 | #5266 |
| 8” | #5271 | #5272 | #5273 | #5274 | #5275 | #5276 |
| 10” | #5281 | #5282 | #5283 | #5284 | #5285 | #5286 |
| 12” | #5291 | #5292 | #5293 | #5294 | #5295 | #5296 |
Tapered Bore Ring Spacer – Teflon®
Size and Part # for ordering
| Size | Thickness | |||||
|---|---|---|---|---|---|---|
| ½” | ¾” | 1” | 1¼” | 1½” | 2” | |
| 1” | #5311 | #5312 | #5313 | #5314 | #5315 | #5316 |
| 1½” | #5321 | #5322 | #5323 | #5324 | #5325 | #5326 |
| 2” | #5331 | #5332 | #5333 | #5334 | #5335 | #5336 |
| 3” | #5341 | #5342 | #5343 | #5344 | #5345 | #5346 |
| 4” | #5351 | #5352 | #5353 | #5354 | #5355 | #5356 |
| 6” | #5361 | #5362 | #5363 | #5364 | #5365 | #5366 |
| 8” | #5371 | #5372 | #5373 | #5374 | #5375 | #5376 |
| 10” | #5381 | #5382 | #5383 | #5384 | #5385 | #5386 |
| 12” | #5391 | #5392 | #5393 | #5394 | #5395 | #5396 |
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