Midland Industries 704070-05 Flare Swivel Coupling Brass

Product Description

The MIDLAND INDUSTRIES 704070-05 is a lead-free brass SAE 45-degree flare swivel coupling designed for connecting two female flared tube ends in refrigeration, HVAC, and fuel-gas line applications. Both connection points accept 5/16-inch female flared fittings with a 1/2-20 thread. The swivel design allows for rotation during installation, reducing the risk of tube twist and making alignment in tight spaces significantly easier. Rated for temperatures from -40 degrees F to 250 degrees F, this fitting suits a wide range of service conditions. Lead-free brass construction meets regulatory requirements for potable and non-potable fluid systems. HVAC technicians and plumbers are the primary installers of this type of fitting.

This coupling is suited for residential and light commercial applications where two female flare connections must be joined in a single inline fitting. It is compatible with aluminum, brass, copper, or steel tubing, making it a versatile option across different tubing materials commonly found in HVAC refrigerant circuits, LP or natural gas supply lines, and hydraulic or fuel systems. The swivel action is particularly useful when working in confined mechanical rooms or equipment cabinets where fixed fittings would require tubing manipulation.

Key Features

• SAE 45-degree double female flare configuration on both ends for inline coupling
• Swivel design allows rotation during makeup, reducing tube stress and twist
• Lead-free brass construction meets applicable regulatory standards
• Compatible with aluminum, brass, copper, or steel tubing
• Rated from -40 degrees F to 250 degrees F for broad service range
• 1/2-20 thread size on both ports

Compatibility

Compatible with aluminum, brass, copper, or steel tubing. Designed as an OEM-style SAE 45-degree flare replacement coupling for HVAC, refrigeration, fuel-gas, and hydraulic tubing systems using 5/16-inch female flared connections.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber following applicable local codes. Shut off and recover all system pressure or refrigerant before removing or installing flare fittings. Use a calibrated flaring tool to ensure the tubing end meets SAE 45-degree flare specifications before makeup. Hand-tighten the swivel nut first, then snug with a properly sized open-end or flare wrench - avoid over-torquing, which can crack the flare seat.