· Certificate: FM/UL/3C/CE,etc.
· Standard: ANSI/UL 213C
· Housing Material: Ductile iron conforming to ASTM A-536, Grade 65-45-12.
· Bolt & Nut: Carbon steel
· Gasket: EPDM, nitrile, silicone rubber, etc.
· Rated pressure: 300~500PSI
· Surface: Hot dip galvanized/electrophoretic/epoxy powder painting
· Color: Variable colors for choice
Style 321 split flange, a type of grooved flanges, mainly use for the flange connection with the valve, equipment or pipe conversion connection to solve the groove connection and flange connection conversion, installation is simple and fast.
Model 321 split flange's bolt holes designed into oval hole. ANSI Class 125 & 150 and PN16 grade flanges are universally available, with DN50 to DN80 (2″ to 3″ ) for both PN10 and PN25 nominal flanges; DN100 to DN150 (4″to 6″ ) for both flanges PN10 nominal grade flange.
| SIZE | DIMENSION | CENTER DISTANCE | THREADED HOLE SIZE | BOLT SIZE | ||||||||
| mm | X-mm | Y-mm | Z-mm | X-inch | Y-inch | Z-inch | mm | inch | mm | inch | MODEL.No. | inch |
| 60 | 167 | 206 | 22 | 6.58 | 8.12 | 0.87 | 125 | 4.93 | 4--18 | 4--0.71 | M10X70 | 3/8X2 3/4 |
| 73 | 179 | 223 | 22 | 7.05 | 8.79 | 0.87 | 140 | 5.52 | 4--18 | 4--0.71 | M10X70 | 3/8X2 3/4 |
| 76 | 186 | 230 | 22 | 7.33 | 9.06 | 0.87 | 145 | 5.71 | 4--18 | 4--0.71 | M10X70 | 3/8X2 3/4 |
| 89 | 201 | 246 | 22 | 7.92 | 9.69 | 0.87 | 160 | 6.30 | 8--18 | 8--0.71 | M10X70 | 3/8X2 3/4 |
| 114 | 230 | 276 | 24 | 9.06 | 10.87 | 0.95 | 191 | 7.51 | 8--18 | 8--0.71 | M10X70 | 3/8X2 3/4 |
| 140 | 254 | 301 | 24 | 10.01 | 11.86 | 0.95 | 210 | 8.27 | 8--18 | 8--0.71 | M10X70 | 3/8X2 3/4 |
| 141 | 255 | 303 | 24 | 10.05 | 11.94 | 0.95 | 216 | 8.51 | 8--22 | 8--0.87 | M10X70 | 3/8X2 3/4 |
| 165 | 286 | 342 | 25 | 11.27 | 13.47 | 0.99 | 240 | 9.46 | 8--22 | 8--0.87 | M12X75 | 1/2X3 |
| 168 | 284 | 339 | 26 | 11.19 | 13.36 | 1.02 | 240 | 9.46 | 8--22 | 8--0.87 | M12X75 | 1/2X3 |
| 216 | 332 | 391 | 30 | 13.08 | 15.41 | 1.18 | 290 | 11.43 | 12--22 | 12--0.87 | M12X75 | 1/2X3 |
| 219 | 345 | 400 | 30 | 13.59 | 15.76 | 1.18 | 298 | 11.74 | 12--22 | 12--0.87 | M12X75 | 1/2X3 |
| 273 | 410 | 475 | 32 | 16.15 | 18.72 | 1.26 | 362 | 14.26 | 12--25 | 12--1.02 | M12X85 | 1/2X3 3/8 |
| 325 | 481 | 542 | 35 | 18.95 | 21.35 | 1.38 | 432 | 17.02 | 12--26 | 12--1.02 | M12X85 | 1/2X3 3/8 |
Fast Installation, Zero Downtime: Split design allows 70% faster assembly compared to welded flanges – ideal for maintenance-heavy environments.
Bulk Order Savings: MOQ 50 units with 20-40% volume discounts – tailored for oil rigs and shipbuilding projects.
Global Compliance: ASME B16.5, API 6A, PED 2014/68/EU certified – guaranteed acceptance in EU, US, and MEA markets.
Material: ASTM A105 carbon steel / ASTM A182 F316 stainless steel – withstands up to 5,000 PSI and sub-zero temperatures.
Sealing: RF (Raised Face) or RTJ (Ring-Type Joint) surfaces with spiral-wound graphite gaskets (EN 1514-1).
No Pipe Cutting Required: Retrofit existing pipelines without system shutdowns – save up to $500/hr in lost production.
Reusable Design: Disassemble and reassemble flanges 10+ times without seal degradation.
Non-Standard Sizes: 1/2” to 24” (DN15-DN600) with Class 150 to 2500 pressure ratings.
Laser Marking: Permanent engraving of material grade, pressure class, and batch number for full traceability.
Offshore Oil Rigs: API 6A split flanges for high-pressure wellhead connections.
Marine Engine Systems: DNV-GL certified flanges resistant to saltwater corrosion.
Chemical Processing: PTFE-coated split flanges for sulfuric acid pipelines.
Q: Are your split flanges compatible with existing pipeline materials?
Yes! We match flange materials (e.g., ASTM A105 to A106 pipes) to prevent galvanic corrosion.
Q: Can I get a sample before bulk orders?
Free split flange samples (1-2 pcs) provided – only pay shipping costs.
Q: How to handle on-site leaks?
24/7 technical support + 48-hour emergency replacement service for defective units.
