14 nptf什么意思

"14 NPTF" is a term used in the context of threaded fasteners, specifically referring to the National Pipe Taper Fuel (NPTF) thread form. Here's a breakdown of what each part of the term means:

• 14: This is the nominal diameter of the pipe in inches. It means the threaded part of the pipe or fitting is 14 inches in diameter.
• NPT: "National Pipe Taper" is a type of thread standard used for pipes and fittings in plumbing and other fluid systems. It is also known as "American National Standard Pipe Thread."
• F: The "F" in NPTF stands for "Fuel," indicating that this thread form is specifically designed for fuel systems, which typically require a tighter seal to prevent leaks.

So, "14 NPTF" refers to a pipe thread with a diameter of 14 inches that is designed for fuel systems and uses the NPTF thread form for a secure connection. This type of thread is commonly used in automotive and industrial applications where the transfer of fuel or other fluids needs to be done with minimal leakage.