Midland Industries 30277 Brass Swivel Connector

Product Description

The MIDLAND INDUSTRIES 30277 is a brass swivel connector designed for low-pressure fuel and fluid line applications. It transitions between a 1/4-inch push-on hose barb on one end and a 5/16-inch male inverted flare on the other, with a swivel design that allows the hose side to rotate freely for easier routing and installation. The fitting is rated to a maximum operating pressure of 150 psi and features a 1/2-20 thread with a 1/2-inch hex for wrench engagement. Overall length measures 1.62 inches. Plumbers, HVAC technicians, and gas appliance installers working with small-diameter tubing and hose assemblies will encounter this fitting in typical service work.

This connector is used in residential and light commercial applications where a push-on hose must terminate at an inverted flare connection point. Common scenarios include gas appliance flexible hose assemblies, carburetor fuel lines, and similar low-pressure fluid transfer systems. The swivel function reduces stress on hose assemblies during installation by eliminating the need to rotate the hose itself when making up the connection.

Key Features

• 1/4-inch push-on hose barb end accepts standard push-on hose without clamps in low-pressure service
• 5/16-inch male inverted flare end for secure metal-to-metal seating at the mating fitting
• Swivel design on the barb side allows free rotation to simplify hose routing
• Brass construction provides corrosion resistance suitable for fuel, refrigerant, and fluid service
• 1/2-20 thread specification with 1/2-inch hex for standard wrench installation
• Maximum operating pressure of 150 psi

Compatibility

Designed as an OEM-style replacement or service fitting for systems using 1/4-inch push-on hose with a 5/16-inch inverted flare connection point in low-pressure fluid or fuel line applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or gas appliance service technicians. Always shut off the fuel or fluid supply and relieve system pressure before disassembling any fitting. Inverted flare connections rely on metal-to-metal seating and should be tightened with a backup wrench to avoid deforming the seat or twisting the supply line. Verify that thread specifications and hose inside diameter are confirmed matches before assembly.