General Compression tube fittings are double ferrule type fittings which provide leak-proof, torque-free seals at the tubing connection. … They provide safety and eliminates hazardous leaks of fluids in instrumentation field for a process, pressure, hydraulic and other applicable tubing systems.

Instrument tubing is usually used adjacent to these piping systems, pressure switches, valves, flow monitors, and permitting the combination of pressure gauges. These Tubes are suitable to use in complex instrumentation to assist with automation, safety, and other features of piping system operations.

Tube fittings designed to connect a tube to pipe threads are called connectors. Tube fittings designed to connect one tube to another are called unions: If a tube union joins together different tube sizes rather than tubes of the same size, it is called a reducing union.

Instrumentation tubing is used to connect various pressure gauges, pressure switches, valves and flow monitors on industrial piping and ventilation systems. The most common materials tubing is made from are mild steel, stainless steel, copper, aluminum and polymers.

 A PIPE is a round tubular to distribute fluids and gases, designated by a nominal pipe size (NPS or DN) that represents a rough indication of the pipe conveyance capacity; a TUBE is a round, rectangular, squared or oval hollow section measured by outside diameter (OD) and wall thickness (WT),