English to Russian Tech/Engineering Mechanics / Mech Engineering

Помогите, пожалуйста, перевести фразу -natural gas train-, в тексте речь идет о котлах, горелках и т.д.

The natural gas trains are mainly consisting of:
- one main block valve
- one gas filter
- gas flow meter for local indication
- one pressure gauge for local indication
- one gas pressure regulator
- one double safety shut-off valve