SurgiVet MRI2550 Ventilator. The SurgiVet® MRI 2550 Small Animal Ventilator can be used either as an anesthesia ventilator or a long-term respirator. Pneumatically powered and controlled. Adjustable controls for the inspiratory and expiratory time as well as inspiratory flow. A simple switch will allow 50% of room air to be delivered to the patient and bypass the bellows assembly. Fully portable. The MRI 2550 does not require electricity and is MRI Compatible. Supplied with hoses, attachments, 0-1500ml bellows and test lung. Optional additional bellows also available.