Parker B30-4B Pneumatic Hose Coupling 1/4 in Brass

Product Description

The PARKER B30-4B is a brass pneumatic hose coupling designed for use in compressed air and pneumatic fluid systems. It features a 1/4 inch body diameter with a hose barb thread type and accepts hose with a 5/16 inch inside diameter. Built to Series 30 Industrial Interchange standards, this coupler handles maximum working pressures up to 300 psi and operates across a wide temperature range of -40 degrees F to 250 degrees F. Licensed HVAC technicians, plumbers, and industrial maintenance professionals install this type of fitting when connecting flexible hose to pneumatic lines, air tools, or compressed air distribution systems.

The B30-4B coupler is suited for residential and commercial pneumatic applications where Industrial Interchange compatibility is required. It fits standard Series 30 Industrial Interchange pneumatic systems and is commonly installed at hose termination points in air compressor setups, pneumatic tool lines, and general-purpose compressed air distribution. The hose barb end connects directly to 5/16 inch ID flexible hose without additional fittings.

Key Features

• Series 30 Industrial Interchange standard for broad system compatibility
• 1/4 inch body diameter with hose barb thread type for 5/16 inch ID hose
• Maximum working pressure of 300 psi
• Wide operating temperature range: -40 degrees F to 250 degrees F
• Brass construction for corrosion resistance and durability
• Overall length of 2.62 inches with 0.75 inch hex size for standard wrench fitment

Compatibility

Designed as an OEM-style replacement or direct-fit coupler for Series 30 Industrial Interchange pneumatic systems accepting 1/4 inch body diameter hose barb couplers with 5/16 inch ID hose connections.

Installation Notes

This coupling is installed by qualified technicians or maintenance professionals working on compressed air or pneumatic systems. Always depressurize and bleed down the pneumatic line completely before removing or installing any coupling. Use an appropriately sized wrench on the 0.75 inch hex to seat the fitting without over-torquing the barb connection. Ensure the hose is fully seated over the barb and secured with an appropriate clamp to prevent blowoff under pressure.