Major equipment | Valves | Connectors | Open-ended lines | Pressure relief valves |
Eastern U.S. | ||||
Wellheads | 8 | 38 | 0.5 | 0 |
Separators | 1 | 6 | 0 | 0 |
Meters/piping | 12 | 45 | 0 | 0 |
Compressors | 12 | 57 | 0 | 0 |
In-line heaters | 14 | 65 | 2 | 1 |
Dehydrators | 24 | 90 | 2 | 2 |
Western U.S. | ||||
Wellheads | 11 | 36 | 1 | 0 |
Separators | 34 | 106 | 6 | 2 |
Meters/piping | 14 | 51 | 1 | 1 |
Compressors | 73 | 179 | 3 | 4 |
In-line heaters | 14 | 65 | 2 | 1 |
Dehydrators | 24 | 90 | 2 | 2 |
40 C.F.R. §Table W-1B to Subpart W of Part 98