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Gas-Fired Boiler Parts/Technical Support
45
6.2.3 Gas Trains
6.2.3.1 Standard Gas Train - 1000
No. Part
1. Main Gas Shutoff Cock
2. Main Gas Valve Actuator
3. Main Gas Valve
4. Air/Gas Ratio Control
5. Low Gas Pressure Switch
6. High Gas Pressure Switch
7. Leak Test Valve
8. Pilot Gas Cock
9. Vent Filter
4
3
1
6
5
2
7
8
9