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The NORGREN 100200400 is a push-to-connect straight tube-to-tube connector fitting designed for pneumatic and fluid transfer lines in light industrial, HVAC, and instrumentation applications. Constructed from nickel-plated brass with a nitrile O-ring seal, it handles working pressures up to 260 psi and operating temperatures from 0 degrees F to 175 degrees F. The push-to-connect design allows fast, tool-free tube insertion for quick assembly or service. This fitting is installed by HVAC technicians, pipefitters, and instrumentation mechanics working with small-diameter tubing systems.
This connector is suited for pneumatic control lines, instrument air circuits, and low-pressure fluid distribution systems found in residential and light commercial HVAC controls, compressed air networks, and process instrumentation panels. It accepts tubing with a 4 mm outside diameter and connects two tube ends in a straight inline configuration. The compact overall length of approximately 1.14 inches makes it practical in tight panel or equipment enclosures where space is limited.
Designed as a direct-connect inline fitting for 4 mm outside diameter tubing in pneumatic control and instrument air systems. Consult system documentation to confirm pressure, temperature, and media compatibility before installation.
This fitting is typically installed by licensed HVAC technicians, pipefitters, or instrumentation mechanics. Before servicing any pneumatic or pressurized fluid line, depressurize and isolate the circuit completely. Ensure the tube end is cut cleanly and squarely with a proper tube cutter before inserting it fully into the fitting body to achieve a leak-free seal. Verify that the tubing material and system media are compatible with nickel-plated brass and nitrile O-rings prior to use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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