NPSM Threaded Swivel Hose Connectors
NPSM, or National Pipe Straight Mechanical, fittings are designed with a parallel thread and 30-degree seat known as a “chamfer”. This is primarily a part of the design for most NPSM swivel pipe fittings as it prevents hose stress from getting tangled or twisted while in assembly or in use. While most of our NPSM hose fittings have the 30-degree chamfer, it is optional per SAE J514. If this chamfer is necessary. please feel free to consult with our customer service and verify to ensure your NPSM swivel joint does include this chamfer.
The recommended temperature range for these swivel joints is: -65 degrees Fahrenheit to 400 degrees Fahrenheit
30 Degree Chamfers- Most NPSM pipe swivel union fittings have 30-degree chamfers on NPTF male end of fittings. This chamfer is optional per SAE J514. If chamfer is mandatory, consult with our customer service department to verify that chamfer exists on items you are requesting.