An optional manual valve actuator attaches to the top of the electric valve actuator and provides a means to manually open the cylinder valve. The manual valve actuator consists of a brass body, stainless steel actuation pin, and steel safety ring pin.

To discharge the primary cylinder manually, the ring pin is removed and the emergency release button is depressed forcing the pin in the electric valve actuator to depress the valve core of the cylinder valve. All other connected cylinders will be opened pneumatically.