Quick answer: This is the genuine ResMed Leak Valve (Americas version, part 24991) — the intentional-leak (exhalation) component for single-limb ventilator breathing circuits that also incorporates an anti-asphyxia valve (AAV). Its vent holes provide continuous airflow to wash out exhaled CO₂; if the ventilator fails, the built-in AAV opens to room air to prevent rebreathing of exhaled gas. It's used with ResMed Stellar, Astral, and Lumis ventilators, for non-invasive and invasive applications. This is ResMed's recommended component in place of the Leak Port (24976) — because it adds the AAV safety layer. Single-patient use (1–7 days). Clinician-directed, life-support component.
Important — safety (this is the AAV version)
This is a life-support ventilation component:
- The Leak Valve provides the intentional leak for CO₂ washout and an integrated anti-asphyxia valve (AAV) — a safety feature that opens to room air if the ventilator fails, so the patient breathes room air instead of rebreathing exhaled CO₂.
- ResMed recommends the Leak Valve in place of the Leak Port (24976), precisely because of this AAV.
- Clinician note: during ventilation, check that the AAV membrane inside the Leak Valve stays closed. If you observe the membrane opening during ventilation, increase EPAP (per ResMed's clinician guidance).
- Component choice, circuit configuration, and settings are determined by the patient's clinical/respiratory-care team. Vent holes must never be blocked. Follow the device clinical guide and the included instruction sheet.
This listing is informational and is not medical advice.
What's included
- 1 × ResMed Leak Valve (Americas, part 24991) — with integrated AAV and instruction sheet
Circuit, ventilator, filter, and other components not included.
About this part
In a single-limb ventilator circuit, exhaled gas is cleared through an intentional leak so CO₂ is washed out rather than rebreathed. The Leak Valve is the component that provides this — with an important added safety feature:
- Intentional-leak / exhalation function — continuous airflow through the vent holes clears exhaled CO₂.
- Integrated anti-asphyxia valve (AAV) — opens to room air on ventilator failure, preventing rebreathing (the key difference from the Leak Port).
- Non-invasive and invasive use — for invasive application (e.g. with the Stellar), per the clinical guide.
- Single-patient use (1–7 days) — a consumable circuit component, replaced per protocol.
Compatibility: ResMed Stellar, Astral, and Lumis ventilators (per the compatibility guide). This is the Americas version (24991); the ROW version is 24988. Confirm against the patient's prescribed setup.
Leak Valve (24991) vs Leak Port (24976)
- 24991 Leak Valve (Americas) (this) — intentional leak + integrated AAV; ResMed's recommended choice.
- 24988 Leak Valve (ROW) — the rest-of-world version of the same valve.
- 24976 Leak Port — same leak function but no AAV; relies on device alarms only. The Leak Valve is recommended in its place.
Key features
- Genuine ResMed Leak Valve, Americas (24991) — with integrated AAV.
- CO₂ washout + anti-asphyxia protection — opens to room air on ventilator failure.
- ResMed's recommended alternative to the Leak Port (24976).
- For Stellar / Astral / Lumis — non-invasive and invasive use.
- Single-patient use (1–7 days) — consumable circuit component.
Specifications
| Specification | Detail |
| Product type | Intentional-leak (exhalation) valve with anti-asphyxia valve — ventilator circuit component |
| Compatible devices | ResMed Stellar, Astral, Lumis |
| Region | Americas (ROW version = 24988) |
| Anti-asphyxia valve | Yes (integrated) |
| Circuit use | Single-limb; non-invasive & invasive |
| Use | Single-patient use (1–7 days) |
| Clinician note | AAV membrane should stay closed during ventilation; if it opens, increase EPAP |
| Replaces | Recommended in place of Leak Port (24976) |
| Included | Leak Valve + instruction sheet |
| Not included | Circuit, ventilator, filter |
| GUDID | 00619498249916 |
| Prescription | Clinician-directed (life-support component) |
| ResMed reference / SKU | 24991 |
| Brand | ResMed |
Frequently asked questions
What does the Leak Valve do? It provides the intentional leak that washes out exhaled CO₂ in a single-limb circuit, and it includes an anti-asphyxia valve that opens to room air if the ventilator fails — preventing rebreathing.
How is it different from the Leak Port (24976)? The Leak Valve adds an integrated anti-asphyxia valve (AAV); the Leak Port has none and relies only on device alarms. ResMed recommends the Leak Valve in place of the Leak Port.
Which devices does it work with? ResMed Stellar, Astral, and Lumis ventilators. This is the Americas version (24991); the ROW version is 24988.
What's the clinician note about the membrane? During ventilation the AAV membrane should stay closed. If it's observed opening during ventilation, increase EPAP (per ResMed guidance).
How long can it be used? It's single-patient use, 1–7 days, then replaced per protocol.
Can I choose this myself? No — component choice and circuit configuration 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 with an integrated anti-asphyxia valve. Component choice, circuit configuration, and settings are determined by the patient's clinical team; never block the vent holes, and follow the device clinical guide and the included instruction sheet. This listing is informational and is not medical advice.
Can I get it delivered in Brooklyn or shipped nationwide? Yes — Task Supply Corp offers USPS shipping throughout the continental U.S., plus local pickup and delivery in Brooklyn and all five boroughs of New York City.