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Description
The Mastercool 90410 Flex Adapter is a must-have for any Aussie HVAC technician working with mini-splits and commercial refrigeration systems. Designed to convert a 1/4″ SAE hose to 5/16″ SAE (1/2″-20 UNF female flare), it offers a swivel connection for easier access in tight spaces—without twisting your hoses. Plus, it comes ready with a replacement gasket (82010) for a leak-free seal every time.
Key Features & Benefits
- Converts 1/4″ SAE hose to 5/16″ SAE (1/2″-20 UNF female flare)
- Swivel connection allows movement without stressing hoses
- Includes replacement gasket 82010 for reliable sealing
- Access valve core (90–110 PSI opening) included for service applications
- Durable brass construction built for trade use
How to Use
Simply screw the 90410 adapter onto your 1/4″ SAE hose, attach to your 5/16″ SAE fitting, and take advantage of the swivel action for faster, cleaner connections—especially handy in vertical or cramped installations.
Recommended Pairings
- Mastercool Digital Manifold Gauge – pair with the flex adapter for accurate pressure readings on mini-splits.
- HVAC Hoses collection – find compatible 1/4″ SAE hoses for your setup.
- Using a Flex Adapter in HVAC – pro tips for maximising efficiency and avoiding leaks.
Watch It in Action
Built for the Field
With its swivel design and solid brass build, the Mastercool 90410 Flex Adapter is a small but mighty upgrade to your HVAC toolkit. Add it today and make your connections quicker, cleaner, and longer-lasting.
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