Parker B20-3B Pneumatic Hose Coupling 1/4 in Brass

Product Description

The PARKER B20-3B is a brass pneumatic hose coupler designed for use in compressed air and pneumatic tool applications. Part of the Series 20 Industrial Interchange lineup, it features a 1/4 inch body diameter with a hose barb thread type and a 1/4 inch hose inside diameter. The coupler is rated for a maximum working pressure of 300 psi and handles temperatures from -40 degrees F up to 250 degrees F. At 0.1872 pounds, it is a compact, single-piece fitting intended for quick-connect pneumatic line assembly. Licensed HVAC, plumbing, and mechanical contractors as well as industrial maintenance techs routinely install these couplers during pneumatic system builds and repairs.

This coupler is suited for use in residential, commercial, and light industrial pneumatic systems where Industrial Interchange-style quick-connect fittings are the standard. The hose barb end connects directly to pneumatic hose with a 1/4 inch inside diameter, making it a straightforward choice for compressed air lines feeding pneumatic tools, blow guns, and similar equipment. The overall length of 2.49 inches keeps the connection profile low in tight installations.

Key Features

• Industrial Interchange (Series 20) coupler style for broad compatibility with standard pneumatic quick-connect bodies
• 1/4 inch body diameter with 1/4 inch hose barb end for direct hose attachment
• Rated to 300 psi maximum working pressure
• Operating temperature range of -40 degrees F to 250 degrees F
• Brass construction for corrosion resistance in air service applications
• Compact overall length of 2.49 inches

Compatibility

Designed as an OEM-style replacement or new-installation coupler for pneumatic systems using Industrial Interchange Series 20 quick-connect fittings with 1/4 inch hose barb connections.

Installation Notes

Installation is typically performed by mechanical or maintenance technicians working on compressed air distribution systems. Depressurize and bleed down the pneumatic line completely before disconnecting or installing any fitting. Ensure the hose inside diameter matches the 1/4 inch barb size and secure the hose with an appropriate clamp per the system design requirements. Follow applicable ASME or local compressed air system codes for pressure-rated fittings.