Quick answer: This is the ResMed universal disposable bi-level breathing circuit (part 21952) — a single-use circuit for bilevel/CPAP ventilators, with 72″ (6 ft) tubing, a swivel connector, an exhalation port with cap plug, an inline filter, and a pressure line assembly kit. A double-cap closure lets clinicians cap off the exhalation port for use with vented or non-vented interfaces. Universal design fits a range of bilevel/CPAP devices. Sold by the case. This version includes the filter (a no-filter version, 21953, is also available). Clinician-directed.
What’s included
- Universal disposable bi-level circuits with filter — case quantity (each: 72″ tubing, swivel connector, exhalation port + cap plug, inline filter, pressure line assembly kit)
Ventilator and mask/interface not included.
About this part
A bi-level breathing circuit carries pressurized air from a bilevel (BiPAP) or CPAP ventilator to the patient interface, with an exhalation path for CO₂ washout. This universal, single-use circuit is built for flexibility and hygiene:
- 72″ (6 ft) tubing — ample length, with a swivel connector for freedom of movement.
- Exhalation port + cap plug (double-cap closure) — lets clinicians cap off the exhalation port so the circuit works with vented interfaces (mask has its own vent) or non-vented interfaces (circuit provides exhalation). This flexibility is what makes it “universal.”
- Inline filter — this version includes a filter for the circuit (the 21953 version comes without a filter).
- Pressure line assembly kit — a proximal pressure line so the ventilator can monitor pressure at the patient.
- Single-use, disposable — for hygiene and infection control; discard per guidelines.
- Universal fit — designed to work with a range of bilevel/CPAP ventilators.
Filter vs no-filter — get the right one
- 21952 (this) — universal disposable bi-level circuit with filter.
- 21953 — the same universal circuit without filter.
Choose based on whether your setup calls for the inline filter.
Key features
- ResMed universal disposable bi-level circuit with filter (21952) — 72″.
- Swivel connector + exhalation port + cap plug.
- Double-cap closure — use with vented or non-vented interfaces.
- Inline filter + pressure line assembly kit included.
- Single-use, universal — fits a range of bilevel/CPAP ventilators.
- No-filter version — 21953.
Specifications
| Specification | Detail |
| Product type | Universal disposable bi-level breathing circuit (with filter) |
| Use | Bilevel (BiPAP) / CPAP ventilators |
| Tubing length | 72″ (6 ft) |
| Includes (each) | Tubing, swivel connector, exhalation port + cap plug, inline filter, pressure line assembly kit |
| Interfaces | Vented or non-vented (double-cap closure) |
| Filter | Included (no-filter version = 21953) |
| Use | Single-use / disposable |
| Packaging | Case (CS) |
| Material | Latex-free |
| Prescription | Clinician-directed (may require Rx/facility license) |
| ResMed reference / SKU | 21952 (with filter) · 21953 (without filter) |
| Brand | ResMed |
Frequently asked questions
What is this circuit for?
It’s a single-use breathing circuit for bilevel/CPAP ventilators — it carries pressurized air to the patient interface with an exhalation path for CO₂ washout.
Does it include a filter?
Yes — 21952 includes an inline filter. A version without the filter is available as 21953.
Can I use it with vented and non-vented masks?
Yes — the double-cap closure lets clinicians cap the exhalation port for vented interfaces, or leave it for non-vented setups.
How long is the tubing?
72 inches (6 feet).
Is it reusable?
No — it’s single-use and disposable, for hygiene. Discard per guidelines.
Do I need a prescription?
This is a clinician-directed ventilation component and may require a prescription or facility license. Contact us to confirm.
How is it delivered?
Given the clinical nature of ventilation circuits, please contact us to confirm availability and delivery options.
This is a single-use ventilator breathing circuit. Circuit selection and setup (including vented vs non-vented configuration) are determined by the clinical team. Discard per guidelines. This listing is informational and is not medical advice.