Robinair filter-drier 1/4" MFL x 1/4" MFL for RG3/RG6 — inline moisture and particulate protection

Robinair 100343 is a 1/4" MFL x 1/4" MFL inline filter-drier built to keep contaminants out of refrigerant recovery machines like the RG3 and RG6.

This compact, single-unit filter-drier installs between your recovery machine’s inlet and the manifold gauge set outlet to trap moisture, acid, and particulate before they reach sensitive components. That protection helps preserve the recovery unit’s performance and limits the chance that debris or absorbed contaminants will travel back into the system under service. It’s sold individually and is intended for professional HVAC/R technicians and experienced DIYers who operate Robinair recovery equipment.

How does this filter-drier protect my recovery machine and system?

Placed inline, the filter-drier captures solids and adsorbs moisture and acid, reducing wear and potential corrosion inside the recovery unit and the system being evacuated. Because it intercepts contaminants upstream, it lowers the likelihood of internal damage and maintains more reliable recovery performance.

• 1/4" MFL x 1/4" MFL fittings match common recovery and gauge connections.
• Adsorbent media inside removes moisture and acidic byproducts.
• Traps particulate that could clog or score internal components.
• Simple inline placement makes it easy to service or replace between jobs.

Will one filter-drier work for multiple refrigerant types?

No — when you recover different refrigerants with the same machine, cross-contamination can occur if the same filter-drier is reused. To avoid mixing refrigerants and introducing unwanted compounds, label and dedicate a separate filter-drier for each refrigerant type you recover.

• Use one labeled filter-drier per refrigerant family to prevent contamination.
• Change the filter-drier if exposed to unknown contaminants or after heavy use.
• Simplifies record-keeping and compliance when servicing multiple systems.

How do I install and replace the Robinair 100343?

Installation is straightforward: connect the 1/4" MFL inlet to the recovery machine and the 1/4" MFL outlet to the manifold gauge set. Replace the unit when flow is noticeably reduced, after a contamination event, or per your shop’s preventative-maintenance schedule.

• Threaded 1/4" MFL connections for secure, leak-resistant hookups.
• Install inline between recovery unit inlet and gauge outlet as shown in equipment manuals.
• Keep spare units on hand to avoid downtime between jobs.

What maintenance or safety steps should I follow when using this filter-drier?

Always depressurize and follow manufacturer safety guidelines before installing or removing the filter-drier. Dispose of used units according to local regulations — especially if they contain recovered refrigerant residues or contaminants — and store spares in a dry, labeled area to prevent mix-ups.

• Bleed system pressure and isolate equipment before removal.
• Label and store units by refrigerant type to prevent cross-use.
• Follow disposal and environmental rules for contaminated service parts.

Who is this for: The Robinair 100343 is intended for HVAC/R professionals and qualified technicians who operate Robinair RG3, RG6, or compatible recovery machines. It’s useful for workshops that frequently perform refrigerant recovery, service multiple refrigerant types, or want an easy inline solution to reduce contamination risk and extend the life of recovery equipment.