RTJ flanges, often referred to as joint ring flanges, play a crucial role in numerous industrial applications. They are engineered to establish a dependable seal between two interconnected pipes, ensuring leak-free operation. These flanges find widespread use across diverse industries due to their ability to withstand high pressures and harsh environments. In this article, we’ll discuss the types of RTJ flanges and their uses.
What is RTJ Flange?
RTJ flanges, also known as Ring Type Joint Flanges, are a unique type of mechanical seal primarily used to help join pipes and vessels in oil refineries and other industrial plants. Different types of RTJ flanges are available for different applications, each measuring its internal pressure before it is applied. RTJ flanges are precision-engineered, highly durable, and dependable in an array of temperatures and corrosive environments, with standard classes ranging from 150 lbs to 2500 lbs. By offering maximum leakage protection and excellent welding capabilities, these types of flange have become increasingly popular for a wide range of applications – making them an essential part of industries that require leak-tight connections.
RTJ Flange Types
RTJ (Ring Type Joint) flanges are available in various types, each designed for specific applications. Common types include raised face (RTJ RF), flat face (RTJ FF), and groove face (RTJ Groove). RTJ RF flanges feature a raised surface around the bore for better sealing under high pressure. RTJ FF flanges have a flat sealing surface, suitable for applications requiring a flush connection. RTJ Groove flanges have grooves on the sealing surface, enhancing sealing effectiveness. These flange types offer versatility and reliability in various industrial settings, catering to different sealing requirements.
RTJ Flange Uses
RTJ flanges can be found in many industries due to their ability to provide an effective seal at both low and high pressures. They are commonly used in petrochemical processes such as oil refining or gas processing; they can also be found in power plants or factories where steam is produced at high pressures. Additionally, they are often used in water treatment plants or sewage treatment facilities since they can effectively handle extreme temperatures or pressure fluctuations without compromising the integrity of the connection between pipes. Finally, they can also be used in residential plumbing or HVAC systems to ensure a reliable connection between pipes while still allowing them to move freely without creating any leaks or damage to the system.
RTJ Flange Dimension
| Size in Inch | Size in mm | Outer Dia. | Flange Thickness | Hub OD | Weld Neck OD | Welding Neck Length | RTJ RF Dia | RTJ RF Height | PCD | RTJ Pitch dia | RTJ Depth | RTJ Width | Bore |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | I | J | K | L | ||
| 1/2 | 15 | 90 | 9.6 | 30 | 21.3 | 46 | N/A | N/A | 60.3 | N/A | N/A | N/A | Welding Neck bore is derived from the pipe schedule |
| 3/4 | 20 | 100 | 11.2 | 38 | 26.7 | 51 | N/A | N/A | 69.9 | N/A | N/A | N/A | |
| 1 | 25 | 110 | 12.7 | 49 | 33.4 | 54 | 63.5 | 6.35 | 79.4 | 47.63 | 6.35 | 8.74 | |
| 1 1/4 | 32 | 115 | 14.3 | 59 | 42.2 | 56 | 73 | 6.35 | 88.9 | 57.15 | 6.35 | 8.74 | |
| 1 1/2 | 40 | 125 | 15.9 | 65 | 48.3 | 60 | 82.5 | 6.35 | 98.4 | 65.07 | 6.35 | 8.74 | |
| 2 | 50 | 150 | 17.5 | 78 | 60.3 | 62 | 102 | 6.35 | 120.7 | 82.55 | 6.35 | 8.74 | |
| 2 1/2 | 65 | 180 | 20.7 | 90 | 73 | 68 | 121 | 6.35 | 139.7 | 101.6 | 6.35 | 8.74 | |
| 3 | 80 | 190 | 22.3 | 108 | 88.9 | 68 | 133 | 6.35 | 152.4 | 114.3 | 6.35 | 8.74 | |
| 3 1/2 | 90 | 215 | 22.3 | 122 | 101.6 | 70 | 154 | 6.35 | 177.8 | 131.78 | 6.35 | 8.74 | |
| 4 | 100 | 230 | 22.3 | 135 | 114.3 | 75 | 171 | 6.35 | 190.5 | 149.23 | 6.35 | 8.74 | |
| 5 | 125 | 255 | 22.3 | 164 | 141.3 | 87 | 194 | 6.35 | 215.9 | 171.45 | 6.35 | 8.74 | |
| 6 | 150 | 280 | 23.9 | 192 | 168.3 | 87 | 219 | 6.35 | 241.3 | 193.68 | 6.35 | 8.74 | |
| 8 | 200 | 345 | 27 | 246 | 219.1 | 100 | 273 | 6.35 | 298.5 | 247.65 | 6.35 | 8.74 | |
| 10 | 250 | 405 | 28.6 | 305 | 273 | 100 | 330 | 6.35 | 362 | 304.8 | 6.35 | 8.74 | |
| 12 | 300 | 485 | 30.2 | 365 | 323.8 | 113 | 406 | 6.35 | 431.8 | 381 | 6.35 | 8.74 | |
| 14 | 350 | 535 | 33.4 | 400 | 355.6 | 125 | 425 | 6.35 | 476.3 | 396.88 | 6.35 | 8.74 | |
| 16 | 400 | 595 | 35 | 457 | 406.4 | 125 | 483 | 6.35 | 539.8 | 454.03 | 6.35 | 8.74 | |
| 18 | 450 | 635 | 38.1 | 505 | 457.2 | 138 | 546 | 6.35 | 577.9 | 517.53 | 6.35 | 8.74 | |
| 20 | 500 | 700 | 41.3 | 559 | 508 | 143 | 597 | 6.35 | 635 | 558.8 | 6.35 | 8.74 | |
| 24 | 600 | 815 | 46.1 | 663 | 610 | 151 | 711 | 6.35 | 749.3 | 673.1 | 6.35 | 8.74 |
Conclusion
As you can see, there are many different types of RTJ Flange available on the market today, which makes them ideal for use in various industries such as petrochemicals, power plants, factories and even residential plumbing systems! It’s important to know which type is best suited for your needs so that you can ensure you get the best possible performance out of your system. With proper installation and maintenance, these types of flanges should be able to serve you reliably for years to come!
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