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

Product Description

The PARKER 821FR-4-GRN-RL is a push-on air hose designed for compressed air distribution in industrial, mechanical, and trade service applications. With a 1/4 inch inside diameter and a 0.5 inch outside diameter, this hose handles a working pressure of 350 psi and operates across a temperature range of -40 degrees F to 212 degrees F. Constructed from synthetic rubber, it delivers reliable flexibility and durability in demanding shop and field environments. It is sold by the foot in 25-foot minimum cut lengths from a 575-foot master coil, making it practical for contractors and service shops that need exact run lengths without waste.

This hose is suited for pneumatic tool lines, air supply drops, and general compressed air routing in commercial and light industrial settings. The push-on design eliminates the need for hose clamps at the fitting connection, speeding up assembly for HVAC technicians, plumbers, pipefitters, and general mechanical contractors. The green color aids visual identification in multi-line installations. No end connections are included; field-installed push-on fittings are required to complete the assembly.

Key Features

• Push-on construction allows fast, clamp-free fitting attachment
• 350 psi working pressure rated for compressed air service
• Operating range of -40 degrees F to 212 degrees F suits a wide range of environments
• Synthetic rubber construction provides flexibility and abrasion resistance
• Green color supports easy line identification in multi-hose installations
• Sold by the foot in 25-foot minimum increments from a 575-foot coil

Compatibility

Designed for use with standard push-on pneumatic fittings sized for 1/4 inch ID hose in compressed air distribution systems. Verify fitting compatibility with the 0.5 inch outside diameter before assembly.

Installation Notes

Installation is typically performed by HVAC technicians, pipefitters, or pneumatic system mechanics. Depressurize and lock out the air supply before cutting or connecting hose segments. Use a clean, square cut to ensure a proper push-on fitting seal. Confirm that all fittings and system components are rated to meet or exceed the 350 psi working pressure of this hose.