 |
| Quantity: | |
|---|---|
TH Flange
SDFL
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | E | C | F | D | G | ||
| 15 | 1/2 | 95.2 | 66.5 | 15.7 | 4 | 17 | 14.2 | 38.1 | 22.4 | 35.1 | 1.6 |
| 20 | 3/4 | 117.3 | 82.6 | 19.1 | 4 | 22.5 | 15.7 | 47.7 | 25.4 | 42.9 | 1.6 |
| 25 | 1 | 123.9 | 88.9 | 19.1 | 4 | 29 | 17.5 | 53.8 | 26.9 | 50.8 | 1.6 |
| 32 | 1-1/4 | 133.3 | 98.6 | 19.1 | 4 | 37.5 | 19 | 63.5 | 26.9 | 63.5 | 1.6 |
| 40 | 1-1/2 | 155.4 | 114.3 | 22.4 | 4 | 43.5 | 20.6 | 69.85 | 30.2 | 73.15 | 1.6 |
| 50 | 2 | 165.1 | 127 | 19.1 | 8 | 55 | 22.3 | 84 | 33.2 | 91.9 | 1.6 |
| 65 | 2-1/2 | 190.5 | 149.4 | 22.4 | 8 | 71 | 25.4 | 100 | 38.1 | 104.6 | 1.6 |
| 80 | 3 | 209.5 | 168.1 | 22.4 | 8 | 83.5 | 28.4 | 117.3 | 42.9 | 127 | 1.6 |
| 90 | 3-1/2 | 228.6 | 184.2 | 22.4 | 8 | 96 | 30.2 | 133.3 | 44.4 | 139.7 | 1.6 |
| 100 | 4 | 254 | 200.1 | 22.4 | 8 | 108.5 | 31.7 | 146 | 47.7 | 157.2 | 1.6 |
| 125 | 5 | 279.4 | 234.9 | 22.4 | 8 | 134 | 35 | 177.8 | 50.8 | 185.7 | 1.6 |
| 150 | 6 | 317.5 | 269.7 | 22.4 | 12 | 159.5 | 36.5 | 206.2 | 52.3 | 215.9 | 1.6 |
Applications
Low/Medium Pressure Non-Welded Systems:
(1)Instrument connections (gauges, sensors).
(2)Fire water systems (galvanized TH flanges).
(3)Hydraulic/pneumatic control lines.
Explosion/Spark-Hazard Zones:
(1)Petrochemical plants: Avoid welding in flammable areas.
(2)Mining ventilation systems.
Frequent Maintenance Points:
(1)Filter housings, valve manifolds.
(2)Sampling ports in chemical labs.
Small-Diameter Piping:
(1)Optimal for DN15-DN100 (½"–4") pipes.
(2)Thread sealing reduces leakage risk vs. large diameters.
Characteristics
Welding-Free Installation:
Screws directly onto external pipe threads (NPT/BSP).
Vibration & Cyclic Load Risk:
(1)Threads may loosen under vibration (requires thread locker).
(2)Avoid in pump/compressor discharge lines.
Thread Sealing Methods:
Sealing reliability depends on thread integrity.
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | E | C | F | D | G | ||
| 15 | 1/2 | 95.2 | 66.5 | 15.7 | 4 | 17 | 14.2 | 38.1 | 22.4 | 35.1 | 1.6 |
| 20 | 3/4 | 117.3 | 82.6 | 19.1 | 4 | 22.5 | 15.7 | 47.7 | 25.4 | 42.9 | 1.6 |
| 25 | 1 | 123.9 | 88.9 | 19.1 | 4 | 29 | 17.5 | 53.8 | 26.9 | 50.8 | 1.6 |
| 32 | 1-1/4 | 133.3 | 98.6 | 19.1 | 4 | 37.5 | 19 | 63.5 | 26.9 | 63.5 | 1.6 |
| 40 | 1-1/2 | 155.4 | 114.3 | 22.4 | 4 | 43.5 | 20.6 | 69.85 | 30.2 | 73.15 | 1.6 |
| 50 | 2 | 165.1 | 127 | 19.1 | 8 | 55 | 22.3 | 84 | 33.2 | 91.9 | 1.6 |
| 65 | 2-1/2 | 190.5 | 149.4 | 22.4 | 8 | 71 | 25.4 | 100 | 38.1 | 104.6 | 1.6 |
| 80 | 3 | 209.5 | 168.1 | 22.4 | 8 | 83.5 | 28.4 | 117.3 | 42.9 | 127 | 1.6 |
| 90 | 3-1/2 | 228.6 | 184.2 | 22.4 | 8 | 96 | 30.2 | 133.3 | 44.4 | 139.7 | 1.6 |
| 100 | 4 | 254 | 200.1 | 22.4 | 8 | 108.5 | 31.7 | 146 | 47.7 | 157.2 | 1.6 |
| 125 | 5 | 279.4 | 234.9 | 22.4 | 8 | 134 | 35 | 177.8 | 50.8 | 185.7 | 1.6 |
| 150 | 6 | 317.5 | 269.7 | 22.4 | 12 | 159.5 | 36.5 | 206.2 | 52.3 | 215.9 | 1.6 |
Applications
Low/Medium Pressure Non-Welded Systems:
(1)Instrument connections (gauges, sensors).
(2)Fire water systems (galvanized TH flanges).
(3)Hydraulic/pneumatic control lines.
Explosion/Spark-Hazard Zones:
(1)Petrochemical plants: Avoid welding in flammable areas.
(2)Mining ventilation systems.
Frequent Maintenance Points:
(1)Filter housings, valve manifolds.
(2)Sampling ports in chemical labs.
Small-Diameter Piping:
(1)Optimal for DN15-DN100 (½"–4") pipes.
(2)Thread sealing reduces leakage risk vs. large diameters.
Characteristics
Welding-Free Installation:
Screws directly onto external pipe threads (NPT/BSP).
Vibration & Cyclic Load Risk:
(1)Threads may loosen under vibration (requires thread locker).
(2)Avoid in pump/compressor discharge lines.
Thread Sealing Methods:
Sealing reliability depends on thread integrity.
