Robinair FLCK-1 Filter Conversion Kit for Promax Recovery Units — 4" Hose, Male/Male Inline Filter, Durable Knurled Couplers

The Robinair FLCK-1 Filter Conversion Kit adapts older Promax recovery and recycling units to accept a standard male/male inline filter, with a 4" hose, adapter, and knurled coupler nuts for fast, secure connections.

Older Promax A/C recovery and recycling machines used a now-obsolete swivel fitting (p/n MF1275) that prevents the use of modern standard male/male filters. The FLCK-1 kit updates those earlier units, providing the hose, inline filter, and adapter needed to convert the connection type quickly and reliably. Every component is built to withstand service conditions and repeated handling, making this a practical shop retrofit rather than a full equipment replacement.

How does the FLCK-1 let my Promax unit accept modern filters?

The kit replaces the obsolete swivel fitting with an adapter and a male/male inline filter connection so you can install widely available filters. Installation is straightforward and designed for shop use, restoring compatibility without modifying the machine itself.

• Includes adapter that mates to older Promax fitting locations
• Male/male inline filter accepts standard replacement elements
• 4" hose links the adapter to the inline filter for convenient placement
• Works without permanent alterations to the recovery unit

What are the durability and handling features of the hose and couplers?

The 4-inch hose and its coupler nuts are built for frequent shop handling and high-pressure service. Coupler nuts have deep knurling for a secure finger-tight grip, and the hose ends are crimped with a six-sided profile to maintain a robust seal under pressure.

• Deep-knurled coupler nuts for quick, slip-resistant finger tightening
• Six-sided crimp on hose ends for mechanical strength and leak resistance
• Compact 4" hose length for tidy routing near service ports
• Materials selected for HVAC-R service environments and repeated use

Will installation disrupt my workflow or require special tools?

Installation is intended to be simple and quick so technicians can return machines to service with minimal downtime. The conversion uses threaded couplings and a push-on hose barb secured by the crimped ends, so typical hand tools or shop wrenches are usually sufficient.

• No specialized equipment required beyond common hand tools
• Designed for finger-tight connections where appropriate for speed
• Adapter and inline filter install without altering the unit's internal plumbing
• Can be completed during routine maintenance or between jobs

What comes in the FLCK-1 kit and what does each part do?

The FLCK-1 package contains a short hose, a male/male inline filter, and an adapter to replace the older swivel fitting. Together these parts convert the older Promax fitting to accept modern filters while keeping all connections secure and serviceable.

• 4" hose — bridges the adapter and inline filter for convenient placement
• Male/male inline filter — allows use of standard replacement filter elements
• Adapter — replaces the obsolete MF1275 swivel fitting interface
• Knurled coupler nuts and crimped hose ends — ensure reliable, repeatable connections

Who is this for: The Robinair FLCK-1 Filter Conversion Kit is aimed at HVAC-R technicians, automotive service shops, and fleet maintenance teams who still operate earlier Promax recovery and recycling units and want to use contemporary, widely available male/male filters. If you need a fast, non-destructive retrofit that restores filter compatibility and provides durable, service-grade connections, this kit is a practical choice.