• NPT threads require a sealant. Gauges for these threads are manufactured as per ANSI / ASME B1.20.1.
  • NPTF threads are designed to seal pressure tight joints without the necessity of using sealing compounds. Gauges are manufactured as per ANSI/ASME B1.20.5.
  • ANPT threads are used for Aeronautical Industries and gauges are as per MIL-P-7105 B.
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