Description
Quick answer: This is the genuine ResMed double-limb adapter for the Astral ventilator series (part 27980) — the adapter that fits to the Astral so it can be used with a double-limb (dual-limb) breathing circuit (separate inspiratory and expiratory limbs). Double-limb circuits are fully supported on the Astral 150, and this adapter is what connects such a circuit to the device. Important: this is a clinical life-support ventilator component — circuit configuration and setup are determined by the patient’s clinical team, and the Astral requires a “Learn Circuit” procedure after the circuit is fitted. It replaces the earlier part 27940.
Important — ventilator component (clinician-directed)
The double-limb adapter is part of a life-support ventilation setup. Which circuit configuration to use, and how to assemble it, is determined by the patient’s healthcare/respiratory-care team. After fitting the adapter and circuit, the Astral requires a “Learn Circuit” procedure so the ventilator characterizes the circuit. Always follow the Astral Clinical Guide and your clinical team’s instructions. This listing is informational and is not medical advice.
What’s included
- 1 × Astral double-limb adapter (part 27980)
Not included: double-limb circuit, ventilator, filter, other components.
About this part
Astral ventilators can run single-limb or double-limb breathing circuits. A single-limb circuit uses one tube with an expiratory valve; a double-limb circuit uses two separate tubes — an inspiratory limb to the patient and an expiratory limb back to the ventilator — for more precise control and monitoring of exhaled gas.
To run a double-limb circuit, the Astral needs this double-limb adapter fitted — it provides the second (expiratory) connection point at the device so both limbs can attach. Without it, a double-limb circuit can’t be connected.
- Enables double-limb circuits — the required interface for dual-limb ventilation on the Astral.
- Fully supported on the Astral 150 — which adds double-limb and FiO₂ monitoring over the Astral 100.
- Replaces part 27940 — 27980 is the current version.
- Pairs with double-limb circuits — e.g. the smooth-bore 22mm double-limb circuits (with water trap 21301 / without 21303).
After fitting, the Astral’s “Learn Circuit” procedure must be run so the ventilator recognizes the new circuit configuration.
Key features
- Genuine ResMed Astral double-limb adapter (27980) — replaces 27940.
- Enables double-limb (dual-limb) circuits on the Astral.
- Required for dual-limb ventilation — provides the expiratory connection.
- Fully supported on the Astral 150 — double-limb + FiO₂ monitoring.
- Clinician-directed — “Learn Circuit” required after fitting.
Specifications
| Specification | Detail |
|---|---|
| Product type | Double-limb (dual-limb) circuit adapter |
| Compatible ventilator | ResMed Astral series (double-limb fully supported on Astral 150) |
| Function | Connects a double-limb circuit to the Astral (adds expiratory connection) |
| Replaces | Part 27940 |
| Pairs with | Astral double-limb circuits (e.g. 21301 with water trap / 21303 without) |
| Setup | “Learn Circuit” procedure required after fitting |
| Included | Adapter only |
| Not included | Circuit, ventilator, filter |
| GUDID | 00619498279807 |
| Prescription | Clinician-directed (ventilator component) |
| ResMed reference / SKU | 27980 |
| Brand | ResMed |
Frequently asked questions
What does the double-limb adapter do?
It fits to the Astral to provide the second (expiratory) connection point, so a double-limb breathing circuit can be attached. It’s required to run dual-limb ventilation on the Astral.
Which ventilator does it fit?
The ResMed Astral series; double-limb is fully supported on the Astral 150. After fitting, the Astral needs a “Learn Circuit” procedure.
Which circuits does it pair with?
Astral double-limb circuits — for example the smooth-bore 22mm double-limb circuit with water trap (21301) or without (21303).
Is this the same as the old 27940?
Yes — 27980 replaces the earlier part 27940.
Can I choose the circuit setup myself?
No — circuit configuration and setup are determined by the patient’s clinical/respiratory-care team.
Do I need a prescription?
This is a life-support ventilator component used under clinical direction. Contact us to confirm requirements.
How is it delivered?
Given the clinical nature of ventilator components, please contact us to confirm availability and delivery options.
This is a component of a life-support ventilation system. Circuit configuration, assembly, and settings are determined by the patient’s clinical team. Perform the Astral “Learn Circuit” procedure and follow the Astral Clinical Guide. This listing is informational and is not medical advice.
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