Parker H4FP Push-lok Hose Barb Pneumatic Connector

Product Description

The PARKER H4FP is a Push-Lok hose barb connector designed for automotive and industrial pneumatic hose assemblies. Built from steel with a zinc chromate finish, this fitting features a Tru-Flate-style interface and a 1/2 inch body diameter, making it a compact and durable solution for compressed air line connections. The Push-Lok design allows for tool-free hose installation — simply push the hose onto the barb for a secure, leak-resistant seal. Licensed HVAC technicians, plumbers, and pneumatic system technicians regularly use fittings of this type when assembling or repairing air supply lines in both shop and field environments.

The H4FP is suited for automotive pneumatic systems and general-purpose compressed air applications. It is typically installed at the end of a flexible air hose to connect to Tru-Flate-style quick-disconnect couplers. The 3/8 inch hose ID compatibility and 1/2 inch body diameter make it a common fit for light-duty to medium-duty pneumatic service lines found in automotive shops, HVAC service vehicles, and industrial maintenance settings.

Key Features

• Push-Lok barb design allows hose installation without clamps or tools
• Steel construction with zinc chromate finish for corrosion resistance
• 1/2 inch body diameter with 3/8 inch hose ID compatibility
• Tru-Flate automotive pneumatic interface for broad coupler compatibility
• Compact single-piece connector — sold individually

Compatibility

Designed as an OEM-style replacement or service fitting for pneumatic hose assemblies using Tru-Flate automotive-style couplers with a 3/8 inch hose ID and 1/2 inch body diameter.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic hose assemblies. Always depressurize the air line fully before disconnecting or replacing fittings. Confirm hose inner diameter matches the barb specification before assembly to ensure a proper seal. Inspect the zinc chromate finish for damage prior to installation in corrosive environments.