Midland Industries 28691 Universal Hose Id Coupler Brass

Product Description

The MIDLAND INDUSTRIES 28691 is a brass universal hose ID coupler designed for pneumatic systems requiring a reliable connection between a 1/4-inch female coupler body and a 3/8-inch hose barb. Built from solid brass, this fitting handles maximum operating pressures up to 250 psi, making it suitable for compressed-air lines and light pneumatic circuits. The female coupler end accepts standard universal-series interchange couplings, while the barbed end secures directly onto compatible hose ID without additional tooling. HVAC technicians, plumbers, and general mechanical contractors install this type of fitting where a quick-disconnect coupler must transition to flexible hose in a compressed-air or fluid-transfer application.

The 28691 is suited for residential and light commercial pneumatic installations where a universal-series coupler interface is required. Its compact profile measures approximately 2.7 inches in length and 0.95 inches in height, allowing installation in space-constrained equipment rooms, utility closets, and mechanical chases. The brass construction resists corrosion in moist or humid environments common to HVAC and plumbing mechanical spaces. This fitting is part of the Midland Industries Universal Series Coupler line, which covers a range of body sizes and hose barb configurations for pneumatic service.

Key Features

• 1/4-inch female coupler body mates with standard universal-series interchange couplings
• 3/8-inch hose barb end secures to matching hose ID without additional adapters
• Rated to 250 psi maximum operating pressure for compressed-air service
• Brass construction provides corrosion resistance in humid mechanical environments
• Compact form factor at 2.7 inches length supports installs in tight spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for pneumatic systems using universal-series hose ID couplers with a 1/4-inch body and 3/8-inch hose barb connection.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or qualified mechanical contractors. Before servicing any compressed-air line, depressurize the system fully and verify pressure is at zero before disconnecting or installing fittings. Secure the hose barb end onto compatible hose using an appropriate clamp to prevent blowoff under pressure. Follow applicable codes and the equipment manufacturer guidelines for maximum system pressure ratings.