Parker TL-251-4MP Pneumatic Hose Coupler Schrader Twist-lock

Product Description

The PARKER TL-251-4MP is a brass pneumatic hose coupler designed for compressed air and pneumatic tool connections in industrial and trade service environments. It uses a Schrader Twist-Lock interchange, allowing fast, secure connections and disconnections under pressure. The body diameter measures 1/4 inch with a 1/4-18 NPTF thread, and it is rated for a maximum working pressure of 300 psi. Constructed from brass, this coupler resists corrosion and holds up to repeated use in demanding shop and field conditions. Licensed contractors, industrial maintenance technicians, and tool service professionals are the primary installers.

This coupler is suited for residential, commercial, and light industrial pneumatic systems where Schrader Twist-Lock fittings are the specified interchange standard. Typical applications include air compressor hose connections, pneumatic tool quick-connects, and service line fittings in HVAC, plumbing, and general mechanical shop environments. The 1/4-18 NPTF thread ensures a pressure-tight mechanical seal without the need for additional thread sealant in many applications.

Key Features

• Schrader Twist-Lock interchange for fast, tool-free hose connection and release
• 1/4-18 NPTF thread provides a dry-seal, pressure-tight connection
• 300 psi maximum working pressure rating
• 1/4 inch body diameter fits standard Schrader-compatible couplers and plugs
• Brass construction for corrosion resistance and durability in shop and field use

Compatibility

Designed as an OEM-style replacement or addition for pneumatic systems using Schrader Twist-Lock interchange fittings with a 1/4-18 NPTF threaded port.

Installation Notes

Installation is performed by qualified mechanical or HVAC technicians. Depressurize the air line completely before removing or installing any pneumatic fitting. Inspect threads for damage before installation and apply thread sealant tape as required by the application or local code. Do not exceed the rated working pressure of 300 psi.