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ResMed Ultra Mirage Full Face - Anti-Asphyxia Valve Membrane
ResMed Ultra Mirage Full Face - Anti-Asphyxia Valve Membrane
ResMed Ultra Mirage Full Face - Anti-Asphyxia Valve Membrane — view 2
ResMed Ultra Mirage Full Face - Anti-Asphyxia Valve Membrane — view 3
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ResMed Ultra Mirage Full Face - Anti-Asphyxia Valve Membrane

Item 16617
Manufacturer: ResMed
$5.00
Ordering these through insurance

We supply CPAP and BiPAP masks and accessories through insurance to patients whose machine came from us. If your machine came from another supplier we can still help — call (718) 735-3400. We will need records from your doctor and from the supplier of your machine, and we will tell you what we can do.

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You finish the purchase on Stark Medical Supplies — our sister store at the same Brooklyn address. Want to use insurance instead? Send a request below.

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About this product

Quick answer: This is the genuine ResMed replacement anti-asphyxia valve (AAV) membrane for the Ultra Mirage Full Face mask (part 16617) — the small silicone diaphragm inside the valve/elbow assembly. The anti-asphyxia valve is a safety feature: if airflow stops (for example the machine switches off), the valve opens so you breathe room air instead of rebreathing exhaled CO₂. This membrane is the working part of that valve — replace it if it's damaged or lost so the safety function keeps working. It fits the Ultra Mirage, Ultra Mirage II, and Mirage Series 2 full face masks. Sold as a 1-pack (membrane only).

What's included

  • 1 × anti-asphyxia valve membrane (part 16617, silicone)

Valve/elbow assembly and mask not included — this is the membrane only.

About this part

Full face masks cover both the nose and mouth, so ResMed builds an anti-asphyxia valve (AAV) into the elbow assembly as a safety measure. During normal therapy, pressurized air holds the valve closed so all your air comes from the machine. But if the airflow stops — the machine is switched off, unplugged, or fails — the valve opens automatically, letting you breathe fresh room air rather than rebreathing the carbon dioxide trapped inside a full face mask.

The membrane (a small silicone-elastomer diaphragm) is the moving part that makes this work. It seats inside the valve/elbow assembly. Because it's a safety component, ResMed recommends replacing it promptly if it's torn, warped, stiff, sticky, or lost — a damaged or missing membrane means the valve may not seal during therapy (causing leaks) or may not open correctly if airflow stops.

Compatibility: it fits the Ultra Mirage Full Face, Ultra Mirage II, and Mirage Series 2 full face masks. It installs into the existing valve/elbow assembly. If the whole valve/elbow assembly is cracked or broken (not just the membrane), that's a separate, complete assembly part.

Key features

Specifications

Specification Detail
Product type Anti-asphyxia valve membrane (diaphragm)
Function Opens to admit room air if airflow stops (anti-asphyxia safety)
Compatible masks ResMed Ultra Mirage FF, Ultra Mirage II, Mirage Series 2 (full face)
Material Silicone elastomer
Fits into The mask's valve / elbow assembly
Included Membrane only (1-pack)
Not included Valve/elbow assembly, mask
UPC 619498166176
Prescription Not required
ResMed reference / SKU 16617
Brand ResMed

Frequently asked questions

What does the anti-asphyxia valve do? It's a safety feature on full face masks: if airflow stops (machine off/unplugged/fails), the valve opens so you breathe room air instead of rebreathing exhaled CO₂.

What's included? The membrane (diaphragm) only. The valve/elbow assembly and mask are separate.

Which masks does it fit? The ResMed Ultra Mirage Full Face, Ultra Mirage II, and Mirage Series 2 full face masks.

When should I replace it? If it's torn, warped, stiff, sticky, discoloured, or lost — because it's a safety part, replace it promptly so the valve keeps working correctly.

My whole valve/elbow is cracked — is this the right part? No — if the assembly itself is broken, you need the complete valve/elbow assembly. This is just the membrane that fits inside it.

Do I need a prescription? No — this replacement part does not require a prescription.

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.

This is a safety component of a full face mask. Use it with your ResMed Ultra Mirage mask according to the mask's user guide, and ensure the anti-asphyxia valve is intact and working before use.