Parker 821FR-4-BLU-RL Push-on Air Hose 1/4 in 350 Psi

Product Description

The PARKER 821FR-4-BLU-RL is a push-on style pneumatic air hose designed for compressed air distribution in industrial and trade service environments. The hose features a 1/4 inch inside diameter and a 0.5 inch outside diameter, with a 350 psi working pressure rating. Its synthetic rubber construction handles a temperature range of -40 degrees F to 212 degrees F, making it suitable for demanding shop and field conditions. This hose is sold cut-to-length from a bulk coil, priced per 1-foot increment with a 25-foot minimum cut. The blue color aids in quick line identification. Installation requires no end fittings on the hose body itself — it is sold without end connections.

This hose is used in compressed air systems across HVAC shops, plumbing service vehicles, electrical contractor facilities, and general trade environments. The push-on design is compatible with standard push-on style barb fittings and is appropriate for pneumatic tool lines, air supply drops, and low-pressure control applications. The 575-foot total coil length supports high-volume distributors or shops cutting multiple runs. A licensed or qualified trade technician typically handles bulk hose installation where proper fitting selection and pressure rating compliance are required.

Key Features

• Push-on construction — no clamps required when used with compatible push-on barb fittings
• 350 psi working pressure rating for standard compressed air service
• Wide temperature range: -40 degrees F to 212 degrees F
• Synthetic rubber construction resists abrasion and maintains flexibility
• Blue color for easy pneumatic line identification
• Cut-to-length from bulk coil — sold per 1-foot increment, 25-foot minimum cut

Compatibility

Designed for use with standard push-on barb fittings sized for 1/4 inch inside diameter air hose. No end connections are included. Verify fitting compatibility and system pressure requirements before installation.

Installation Notes

Installation of bulk air hose should be performed by a qualified technician familiar with compressed air system design. Depressurize and isolate the air line completely before cutting, fitting, or replacing any hose section. Use a clean, square cut to ensure a proper seal when seating hose onto push-on barb fittings. Verify that all fittings and downstream components are rated at or above the system operating pressure.