O2 Concepts Liberty2 — Sieve Bed Tube Kit (1 Set)

OEM-style replacement tubing & seals for the Liberty2 sieve-bed circuit

 

 

The Liberty2 Sieve Bed Tube Kit replaces the internal air/oxygen lines that connect the Liberty2’s sieve beds to valves/manifolds. Over time, tubing can stiffen, crack, or leak, leading to purity alarms, reduced output, or higher compressor load. Refreshing the tubing path helps the device maintain tight seals and stable oxygen concentration.

⚠️ Service note: Internal parts should be installed by a qualified technician. Opening the cabinet can void warranties. If your unit is still under coverage, contact support first.

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What’s Included

• Pre-cut sieve bed interconnect tubes (Liberty2 layout)

• Barbed connectors/elbows (as required by run)

• O-rings/seals sized for Liberty2 connections

• Mini clamps (where applicable)

• Quick reference sheet (orientation/fit notes)

 

(Exact contents may vary by lot; all components are selected for Liberty2 fitment.)

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Key Benefits

 

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Compatibility

• Device: O2 Concepts Liberty2 portable/transportable oxygen concentrator

• Not for: Oxlife Independence/other brands’ POCs (routing & sizing differ)

If you’re unsure about your model, share your serial/model label with us and we’ll confirm fit before you buy.

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Why Buy from American Oxygen (Doral, FL)

• Same-day pickup available in Doral (Mon–Fri, 10–5)

• Fast shipping across the US

• Authorized dealer for O2 Concepts & leading brands

• Bilingual support (English/Español)

• ‍ Technical guidance for parts & service

• If you’re located in South Florida, you can pick up your Liberty2 Sieve Bed Tube Kit the same day at our American Oxygen store in Doral, FL. We serve patients and providers across Miami, Hialeah, Kendall, Coral Gables, and nearby areas. Not local? Enjoy fast nationwide shipping.

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Installation (summary for technicians)

1. Power down & disconnect AC/DC; remove battery; wait for capacitors to discharge.

2. Open cabinet per service manual; document the original tube routing (photos help).

3. Remove old tubing and inspect barbs/manifolds for wear.

4. Seat new O-rings (light silicone oxygen-safe lubricant if specified by OEM).

5. Install new tubes: fully seat on barbs; secure with supplied mini-clamps if applicable.

6. Reassemble, then perform: leak test, flow/purity check, and alarm verification.

 

Symptoms pointing to tubing replacement: intermittent purity alarms, audible hissing, visible cracks, yellowed/brittle tubes, or frequent cycle times.

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Care & Maintenance Tips

• Keep intake filters clean; clogged filters increase internal heat & stress on tubing.

• Avoid extreme heat in cars/closets; elastomers age faster at high temps.

• Follow the Liberty2 service interval for sieve, filters, and gaskets.

 

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FAQs

Is this the same as a “sieve bed”?

No. This kit replaces the tubes & seals that connect the sieve beds. The sieve bed/cartridge is a different part.

Will this fix low oxygen purity?

If leaks or hardened tubing are contributing, yes—restoring airtight connections can help. If the sieve media is exhausted or valves are faulty, additional parts may be needed.

Can I install it myself?

We recommend a qualified technician. Internal work requires proper leak testing and purity verification.

How often should tubing be replaced?

There’s no single interval; replace when brittle, discolored, cracked, or leaking, or during a major service (e.g., sieve replacement).

Does this include external filters?

No—intake/output filters are sold separately.