Mastercool 90413 — R410A Straight Adapter 1/4" FL-M x 5/16" Swivel-F

Professional R410A adapter converts standard 1/4" SAE manifold hoses for use with R410A systems. Features 1/4" flare male connection on one end and 5/16" swivel female (1/2"-20 UNF) connection on the other. Straight design for direct connections. Essential adapter for servicing R410A air conditioning and heat pump systems with standard manifold gauge sets.

Key Features:

• R410A Adapter – Converts standard hoses for R410A systems
• 1/4" Flare Male – Connects to standard manifold hoses
• 5/16" Swivel Female – 1/2"-20 UNF thread for R410A service ports
• Straight Design – Direct connection without bends
• Brass Construction – Durable, corrosion-resistant
• Professional Quality – Built to Mastercool standards
• Essential Accessory – Required for R410A service work

Specifications:

• Model: 90413
• Type: Straight adapter
• Connection 1: 1/4" SAE flare male
• Connection 2: 5/16" swivel female (1/2"-20 UNF)
• Material: Brass
• Application: R410A refrigerant systems
• Weight: 10 kg (shipping weight)
• SKU: 90413
• Barcode: 700376100419
• HS Code: 84189910

Compatible Manifold Sets:

• 57461-E — Manifold 3/8" 63mm R410A with 3 x 150cm + 1 x 3/8" Hoses
• 57472-E — Manifold 3/8" 63mm R410A with 3 x 180cm + 1 x 3/8" Hoses
• 57472-EB — Manifold 3/8" 80mm R410A with 3 x 180cm + 1 x 3/8" Hoses
• 99926-BT — SPARTAN Digital 2-Way Manifold with 3 x 150cm Hoses & Temp Clamp
• 99946-BT — SPARTAN Digital 4-Way Manifold with 3 x 150cm Hoses & Temp Clamp

Applications:

• R410A air conditioning systems
• R410A heat pump installations
• Converting standard manifolds for R410A service
• Connecting 1/4" hoses to 5/16" service ports
• Professional HVAC/R service work

Why R410A Requires Different Fittings:

R410A operates at significantly higher pressures than older refrigerants like R22 or R134a. To handle these higher pressures and prevent cross-contamination with older refrigerants, R410A systems use larger 5/16" service ports with 1/2"-20 UNF threads instead of the standard 1/4" SAE fittings. This adapter allows you to use your existing manifold gauge sets with standard 1/4" hoses on R410A systems.

R410A System Characteristics:

• Higher Operating Pressures – Up to 50% higher than R22
• 5/16" Service Ports – Larger than standard 1/4" ports
• 1/2"-20 UNF Thread – Different from standard SAE threads
• Colour Coding – Often pink/rose colour for identification
• POE Oil Required – Not compatible with mineral oil

Benefits:

• Use Existing Equipment – No need to purchase R410A-specific manifolds
• Cost-Effective – Adapters are more economical than new manifolds
• Professional Quality – Brass construction ensures durability
• Leak-Free Connections – Proper thread engagement prevents leaks
• Essential Accessory – Required for R410A service work
• Straight Design – Direct connection without restrictions

How to Use:

1. Connect 1/4" flare male end to your manifold hose
2. Tighten securely using two wrenches (one on adapter, one on hose)
3. Connect 5/16" swivel female end to R410A service port
4. Tighten to proper torque (do not over-tighten)
5. Check for leaks before proceeding with service
6. Proceed with normal manifold gauge operations

Important Notes:

• Always use proper torque when tightening connections
• Check for leaks after connecting to system
• Use dedicated hoses for R410A to prevent cross-contamination
• Ensure system is R410A before connecting (check service label)
• Never mix refrigerants or use contaminated equipment

Maintenance:

• Inspect threads regularly for wear or damage
• Keep adapter clean and free from debris
• Store in protective case when not in use
• Replace if threads become damaged
• Check for leaks periodically

Professional Quality: Mastercool adapters are manufactured to professional standards for reliable, leak-free connections in demanding HVAC/R service environments. Essential accessory for R410A system service.