Mastercool 90637 Refrigerant Tank Adapter 3/4" NPS F x 1/4" MFL

Mastercool 90637 — 3/4" NPS F x 1/4" MFL Refrigerant Tank Adapter

Professional refrigerant tank adapter for connecting refrigerant cylinders to service equipment. Features 3/4" NPS female thread on one end and 1/4" male flare (MFL) connection on the other. Heavy-duty brass construction ensures secure, leak-free connections for refrigerant tank refills and charging operations. Essential adapter for HVAC/R technicians working with refrigerant cylinders.

Key Features:

• 3/4" NPS Female Thread – Connects to refrigerant cylinder valve
• 1/4" Male Flare (MFL) – Connects to service hoses and equipment
• Heavy-Duty Brass Construction – Durable, corrosion-resistant
• Secure Connection – Leak-free operation
• Professional Quality – Built to exacting standards
• Universal Compatibility – Works with standard refrigerant cylinders

Specifications:

• Model: 90637
• Type: Refrigerant tank adapter
• Connection 1: 3/4" NPS Female (National Pipe Straight)
• Connection 2: 1/4" Male Flare (MFL)
• Material: Brass
• Application: Refrigerant cylinder connections, HVAC/R service
• Weight: 10 kg (shipping weight)
• SKU: 90637
• HS Code: 84189910

Related Tank Adapters & Connectors:

• 90639 — European Refrigerant Tank Adapter 21.8-14 F x 1/4" Flare Male

Applications:

• Connecting refrigerant cylinders to manifold gauge sets
• Refrigerant tank connections to charging equipment
• Cylinder valve to service hose connections
• HVAC/R refrigerant charging operations
• Professional refrigerant service work
• Workshop and mobile service

What is NPS Thread?

NPS (National Pipe Straight) is a straight thread form commonly used on refrigerant cylinder valves. Unlike tapered pipe threads (NPT), NPS threads are parallel and require a gasket or O-ring for sealing. The 3/4" NPS female connection on this adapter is designed to thread onto standard refrigerant cylinder valves.

What is Male Flare (MFL)?

Male Flare (MFL) is a 45-degree flare fitting commonly used in refrigeration and air conditioning systems. The 1/4" MFL connection on this adapter allows you to connect standard refrigerant service hoses and equipment to refrigerant cylinders.

Why You Need This Adapter:

• Universal Compatibility – Connects standard cylinders to service equipment
• Professional Standard – Essential adapter for refrigerant service
• Leak-Free Connection – Heavy-duty brass construction ensures tight seal
• Durable Construction – Built for long service life
• Versatile – Works with various refrigerant types

Compatible Refrigerant Cylinders:

This adapter works with standard refrigerant cylinders featuring 3/4" NPS valve threads, including:

• R410A refrigerant cylinders
• R134a refrigerant cylinders
• R22 refrigerant cylinders
• R404A refrigerant cylinders
• R407C refrigerant cylinders
• Other common refrigerants with standard valve threads

Installation:

1. Ensure refrigerant cylinder valve is closed
2. Thread 3/4" NPS female end onto cylinder valve
3. Hand-tighten securely (use wrench if needed, do not over-tighten)
4. Connect 1/4" MFL end to service hose or equipment
5. Tighten flare connection with appropriate wrench
6. Check for leaks before opening cylinder valve
7. Open cylinder valve slowly to begin refrigerant flow

Safety Notes:

• Always check for leaks after connecting adapter
• Ensure proper thread engagement before pressurising
• Use appropriate wrenches to prevent thread damage
• Do not over-tighten connections
• Follow refrigerant handling safety procedures
• Wear safety glasses when handling refrigerant

Benefits:

• Essential Adapter – Required for cylinder-to-equipment connections
• Heavy-Duty Construction – Brass construction for durability
• Leak-Free Operation – Precision threads ensure tight seal
• Professional Quality – Built to Mastercool standards
• Universal Compatibility – Works with standard refrigerant cylinders
• Long Service Life – Durable construction withstands repeated use

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
• Do not use damaged adapters

Professional Quality: Mastercool refrigerant tank adapters are manufactured to professional standards for reliable, leak-free connections in demanding HVAC/R service environments. Essential adapter for connecting refrigerant cylinders to service equipment.