Description
Product details
An NPTF thread gauge is used to measure National Pipe Taper Fuel (NPTF) threads, which are a dry-seal version of standard NPT threads. These threads are commonly used in hydraulic and pneumatic systems where a pressure-tight seal is needed without using sealants like PTFE tape. Key Details: NPTF = National Pipe Taper Fuel (Dryseal thread) Threads are designed to interfere slightly for a leak-proof metal-to-metal seal. Gauges are used to verify thread dimensions, taper, pitch, and truncation. Types of NPTF Thread Gauges: Go and No-Go Plug Gauges (for internal threads) Go and No-Go Ring Gauges (for external threads) L1 Gauge – Measures the hand-tight engagement length. L2 or L3 Gauge – Used to check threads beyond the hand-tight area. Common Use: Ensuring that threads conform to ANSI/ASME B1.20.3 standard. Widely used in automotive, fuel systems, hydraulics, and industrial piping.
