Midland Industries 30212 Brass Push-on Hose Barb Adapter

Product Description

The MIDLAND INDUSTRIES 30212 is a straight brass push-on hose barb adapter designed to connect 5/16-inch push-on hose to a 1/8-inch male NPT tapered fitting (MNPTF). Machined from brass, this fitting delivers reliable, corrosion-resistant performance in low-pressure fluid and air lines. The barbed end grips standard push-on hose without clamps, while the 1/8-27 threaded male end seals into NPT-tapped ports. Rated to 150 psi, it handles typical working pressures found in fuel, pneumatic, and fluid transfer applications. The overall length is 1.42 inches with a 0.77-inch hex for wrench engagement and a 0.77-inch barb length for secure hose retention.

This adapter is suited for residential and light commercial applications where a small-diameter push-on hose must transition to a threaded port. Common install scenarios include fuel line connections, pneumatic control lines, lubrication circuits, and low-pressure hydraulic fittings. Plumbers, HVAC technicians, and equipment service pros regularly use this style of fitting when routing 5/16-inch hose to equipment ports, manifolds, or valved assemblies with 1/8-inch NPT inlets.

Key Features

• 5/16-inch push-on hose barb end accepts standard push-on hose without clamps
• 1/8-inch MNPTF (1/8-27 thread) seals into standard NPT-tapped ports
• Rated to 150 psi working pressure
• Brass construction resists corrosion in fuel, air, and water service
• 0.77-inch hex allows standard wrench installation
• Compact 1.42-inch overall length fits tight installation spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 5/16-inch push-on hose with 1/8-inch MNPTF port connections in low-pressure fluid, air, or fuel line applications.

Installation Notes

This fitting is typically installed by plumbers, HVAC technicians, or equipment mechanics working on low-pressure fluid or pneumatic lines. Shut off fluid or air supply and relieve line pressure completely before removing or installing any fitting. Apply thread sealant or PTFE tape to the male NPT threads before tightening; hand-start the fitting first, then use a wrench on the hex to avoid cross-threading. Push hose fully onto the barb until it seats against the fitting shoulder to ensure a secure, leak-free connection.