The function of a high hub flange is similar to that of a blind flange. Essentially, they work to stop or halt the flow of media across piping systems. The high hub blind flange is often used at the end of pipes or tubes in a system. The design of these flanges includes a circular plate with bolt holes. The circular plate has a raised hub, which is constructed based on the inner diameter of the piping system.
The raised hub of the Ansi B16.47 High Hub Flange fits snugly around the inner walls of the pipe to seal the liquid, steam, or gas in the pipe. Although these flanges are available in multiple sizes and in different grades, they can be manufactured to optimize their mechanical properties, resistance to corrosion as well as the size and pressure rating of Class 150 hubbed flange. Unlike other flanges that form a more transitional connection, these devices prevent the flow of media across piping systems. In comparison to other flanges, they tend to be more stressed, and so it is necessary that the material that is chosen to make them be durable. Stainless Steel Hubbed Flange produced from grades like 304 or 316 are much more durable and work well in environments that are exposed to corrosive chemicals. The chemical composition of most stainless steel alloys contains chromium, nickel, and molybdenum making them cost much higher than a Carbon Steel Hub Blank Flange. As opposed to conventional stainless steel alloys the content of many carbon steel alloys include only carbon and iron, along with trace quantities of other elements, making the Carbon Steel A105 High Hub Blind Flange, a more cost effective option.
| Size Chart | 1/2 inch to 48 inch |
|---|---|
| Pressure Rating ANSI | Class 150, 300, 600, 900, 1500, 2500 LBS |
| Pressure Calculation in DIN | 6, 10, 16, 25, 40 Bar and PN6 PN10 PN16 PN25 PN40, PN64 |
| JIS Standards | 5, 10, 16 20, 30, 40, 63 K |
| UNI Standards | 6, 10, 16, 25, 40 Bar |
| EN Standards | 6, 10, 16, 25, 40 Bar |
| Coating | Oil Black Paint, Yellow Transparent, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized |
| Most common types of | Screwed, Forged, Threaded, Plate |
| Production technique | Heat treated, Forged and machined |
| Test | X-ray detector, Direct-reading Spectrograph, Hydrostatic testing machine, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | electric bevelling machine, Press machine, Bending machine, Pushing Machine, Sand-blasting machine etc |
| Flange Face Type | Lap-Joint Face, Raised Face, Ring Type Joint, Flat Face, Small Tongue, Large Male-Female, Small Male-Female, Large Tongue & Groove Flanges manufacturer and Supplier |
| Flanges Marking | All Flanges are marked as follows: Supplier or Manufacturer’s Name, Size, Class, Bore, Dimension, Material, Heat No. Or according to the customer’s request. |
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| ASME/ANSI B16.5 | High Hub Blind Flange |
| Pressure Class | 150, 300, 600, 900, 1500, 2500 LBS DIN Standard ND-6,10, 16, 25, 40 Etc. |
| DIN EN 1092-1 Face Dimensions | PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400 |
| BS 4504 SEC 3.1, BS 4504[PART 1], BS 1560 Boss | High Hub Blind Flange |
| Table | D, E, F, H |
| DIN Flanges | DIN 2637,2638, 2656, 2655, 2527, 2633, 2576, 2629, 2632, 2636, 2573, 2627, 2634, 2566, 2628, 2631, 2673, 2635, 2641,2642, |
| Pressure Class | PN 6 TO PN 100 |
| Item ID | Class 150 HH High Hubbed Blind Flanges Description |
|---|---|
| 1FF .51RHHBLD | 1/2 150 RF High Hubbed Blind ASME B16.5 001 lbs |
| 1FF 1.51RHHBL | 1 1/2 150 RF High Hubbed Blind ASME B16.5 004 lbs |
| 1FF 11RHHBL | 1 150 RF High Hubbed Blind ASME B16.5 002 lbs |
| 1FF 21RHHBL | 2 150 RF High Hubbed Blind ASME B16.5 005 lbs |
| 1FF 31RHHBL | 3 150 RF High Hubbed Blind ASME B16.5 009 lbs |
| 1FF .751RHHBL | 3/4 150 RF High Hubbed Blind ASME B16.5 002 lbs |
| 1FF 41RHHBL | 4 150 RF High Hubbed Blind ASME B16.5 017 lbs |
| Item ID | Class 300 HH High Hubbed Blind Flanges Description |
|---|---|
| 1FF .53RHHBL | 1/2 300 RF High Hubbed Blind ASME B16.5 002 lbs |
| 1FF 13RHHBL | 1 300 RF High Hubbed Blind ASME B16.5 003 lbs |
| 1FF 1.53RHHBL | 1 1/2 300 RF High Hubbed Blind ASME B16.5 006 lbs |
| 1FF .753RHHBL | 3/4 300 RF High Hubbed Blind ASME B16.5 003 lbs |
| 1FF 23RHHBL | 2 300 RF High Hubbed Blind ASME B16.5 008 lbs |
| Item ID | Class 600 HH High Hubbed Blind Flanges Description |
|---|---|
| 1FF .756RHHBL | 3/4 600 RF High Hubbed Blind ASME B16.5 004 lbs |
| 1FF .56RHHBL | 1/2 600 RF High Hubbed Blind ASME B16.5 004 lbs |
| 1FF 16RHHBL | 1 600 RF High Hubbed Blind ASME B16.5 004 lbs |
| 1FF 1.56RHHBL | 1 1/2 600 RF High Hubbed Blind ASME B16.5 008 lbs |
| 1FF 26RHHBL | 2 600 RF High Hubbed Blind ASME B16.5 010 lbs |