Dixon 2-DU Instrumentation Union is a brass hose fitting designed for reliable connections in instrumentation systems. This union provides secure sealing and easy disassembly for maintenance. Suitable for industrial applications requiring precise fluid control.

Applications

Applications include: high pressure, high temperature, nitrogen, helium, flammable gases, hydraulic gases, corrosive media and pneumatic automation.

Compatibility & Interchange Data

Fully interchangeable with Swagelok and Parker A-Lok fittings

Construction

• ASTM material construction
• 316 stainless steel

Features

• Double collet (ferrule) swaging action
• Two positive seal points

Installation

• Cut tubing squarely and clean tube end thoroughly to remove burrs.
• Insert tubing into the assembly making sure the tubing seats firm against the shoulder of the body and the nut is finger tight.
• Tighten the nut with a wrench 1-1/4 turns, while holding the body with a second wrench.

Note

Instrumentation fittings come completely assembled.

Safety Notes

• Never connect, disconnect or remake a fitting with pressure in the system.
• Make sure all fittings are properly installed.
• It is not recommended to go beyond the pressure rating of the tubing. Elongation could occur in the tubing, shrinking the wall thickness and cause potential harm.
• For proper sealing it is recommended that the tubing and fittings be of like material.
• Always use proper thread lubricant and sealants on tapered pipe threads.
• Never bleed a system by loosening a fitting.

Specifications

ASTM F 1387 Certified