Midland Industries 704075-0604 Flare Reducing Swivel Coupling

Product Description

The MIDLAND INDUSTRIES 704075-0604 is a SAE 45-degree flare reducing swivel coupling designed for connecting tubing lines of two different diameters in refrigeration, HVAC, and gas-line applications. Constructed from lead-free brass, it features a 3/8-inch female flared inlet and a 1/4-inch female flared outlet with thread sizes of 5/8-18 and 7/16-20 respectively. The swivel design allows for easier hand-tightening and alignment during installation, reducing stress on tubing connections. This fitting is rated for service temperatures ranging from -40 to 250 degrees F and is compatible with aluminum, brass, copper, or steel tubing.

This coupling is intended for use in residential and light commercial systems where two different flare-size lines must be joined without adapting to a different connection type. Typical applications include refrigerant line sets, fuel gas supply lines, and hydraulic or pneumatic tubing assemblies. The reducing swivel configuration is particularly useful when routing lines in tight spaces or when connecting components with mismatched port sizes. Licensed HVAC technicians and plumbers install this fitting as part of both new construction and service-replacement work.

Key Features

• Lead-free brass construction meets potable and trade-grade installation requirements
• SAE 45-degree double-flare seat on both ends for a leak-resistant mechanical seal
• Swivel design eases alignment and reduces torque stress on tubing during makeup
• Reduces from 3/8-inch female flared to 1/4-inch female flared in a single fitting
• Rated for -40 to 250 degrees F service temperature range
• Compatible with aluminum, brass, copper, or steel tubing

Compatibility

Designed for use with aluminum, brass, copper, or steel tubing fitted with SAE 45-degree flares. Suitable for systems requiring a 3/8-inch female flared to 1/4-inch female flared reducing connection with 5/8-18 and 7/16-20 thread sizes.

Installation Notes

This fitting is installed by licensed HVAC technicians or plumbers depending on the application. Shut off and depressurize the system completely before removing or installing any flare fittings. Inspect tubing flares for cracks, ovality, or surface defects before makeup, as damaged flares are a leading cause of joint leaks. Hand-tighten first to confirm thread engagement, then wrench-tighten to seat the flare without overloading the swivel nut.