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The United ACM Automatic Changeover Manifold is an advanced gas management system designed to provide continuous and uninterrupted gas supply by automatically switching from the service cylinder bank to the reserve cylinder bank when the service bank is depleted.
This automatic transition eliminates the need for manual intervention, ensuring reliable and safe gas delivery in critical applications.
The system is available in multiple configurations, including ACM-3, ACM-4, and ACM-9 models, depending on capacity and installation requirements.
Automatically switches from service bank to reserve bank when gas is depleted.
Functions as a first-stage regulator for stable and controlled gas pressure.
Clear green and red zone indicator shows active and depleted cylinder banks.
Ensures uninterrupted gas flow without manual intervention.
Built for reliable performance in demanding environments.
Both service and reserve cylinder banks are connected, with supply drawn from the service bank.
When service bank pressure drops, the system automatically switches to the reserve bank.
After replacing empty cylinders, the system is reset by adjusting the selector flap to the active bank.
Ensures continuous gas flow for critical operations.
Automatic operation minimizes human handling and error.
Prevents sudden gas supply interruptions in sensitive applications.
Simple cylinder replacement and reset process.
Maintains consistent gas delivery throughout operation.
The United ACM Automatic Changeover Manifold provides a reliable and intelligent solution for continuous gas supply management.
Its automatic switching system, integrated pressure regulation, and visual monitoring make it ideal for applications where uninterrupted gas flow is essential.
It is used to ensure continuous gas supply by switching between cylinder banks automatically.
No, it operates automatically based on pressure levels.
ACM-3, ACM-4, and ACM-9.
Yes, it is widely used in healthcare gas systems.
Yes, it also functions as a first-stage pressure regulator.
Model No. | Approx. Weight | Inlet Connections | Outlet Connections | Mean Delivery Pressure | Mean Flow Rate | ||
kgs | kg/cm2 | psig | kg/hr | lbs/hr | |||
ACM-3 | 1.460 | M.E.C.V | M.E.C.V | 1.05 | 15 | 26.0 | 57.0 |
ACM-4 | 2.380 | M.E.C.V | M.E.C.V | 1.05 | 15 | 45.5 | 100.0 |
ACM-9 | 11.900 | 1" Flanged to B.S. 10 Table ‘F’ | 1" Flanged to B.S. 10 Table ‘F’ | 1.05 | 15 | 120 | 265 |

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