Updated At: 2025-12-03
The CHTB17 series regulators are suitable for building pressure regulating stations, district regulator cabinets, and industrial/commercial users. Their built-in balanced compensation system ensures stable outlet pressure even under conditions of significant inlet pressure fluctuations. The modular design facilitates online maintenance.
Technical Specifications
| Maximum allowable inlet pressure | 4 bar |
| Inlet pressure range | 0.1–4 bar |
| Outlet pressure range | 20–500 mbar |
| Regulating accuracy class | AC 5 |
| Lock-up pressure class | SG 15 |
| Cut-off accuracy class | AG 5 |
| Operating temperature | −20 °C to 60 °C |
| Connection size | DN40 |
Flow Reference Table
| Nm3/h | Outlet Pressure (bar) | ||||||||||
|
Inlet Pressure (bar) |
Standard Type | AP Type | APA Type | ||||||||
| 0.02 | 0.03 | 0.05 | 0.07 | 0.08 | 0.1 | 0.2 | 0.3 | 0.35 | 0.4 | 0.5 | |
| 0.5 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 80 | 80 | 60 | – |
| 0.75 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 110 | 105 | 100 | 80 |
| 1 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 110 | 105 | 100 | 100 |
| 1.5 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 170 | 150 |
| 2 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| 4 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 | 250 |
| Note: Flow rates in the table are based on natural gas with a relative density of 0.6 under standard conditions. | |||||||||||
Main Regulator Spring Reference Table
| Spring Color Code | Spring Parameters | CHTB17 | CHTB17-AP | CHTB17-APA | ||
| D | De | Lo | ||||
| Green | 2.2 | 36 | 175 | 20–25 mbar | – | – |
| Green | 2.4 | 36 | 175 | 24–35 mbar | – | – |
| Yellow | 2.6 | 36 | 175 | 33–50 mbar | – | – |
| Blue | 3.0 | 36 | 175 | 49–70 mbar | – | – |
| Red | 4 | 38 | 213 | – | 70–150 mbar | 300–500 mbar |
| Light Green | 4 | 35 | 213 | – | 140–220 mbar | – |
| Black | 4.5 | 37.5 | 213 | – | 210–300 mbar | – |
| Blue | 4.5 | 34.8 | 213 | – | 250–350 mbar | – |