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NPT Taper Pipe Thread Plug Gauges(American Standard)
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Product Name: NPT Taper Pipe Thread Plug Gauges(American Standard)
Product Numbers: PG-205
Product Specifications: NPT Thread Plug Gauges
Product Unit: 1/16-6
Product Remark: NPT NPTF
Product Class:Measuring Tools > Thread Gauge > NPT Thread Plug Gage
Product Details
【DateTime:2010-06-14 Browse:】【Font: Big Mid Small】【Print】【Close
NPT Thread Plug Gauges
       The taper pipe thread plug has a step at the L1 distance from its small end. When turned hand tight into the products internal pipe thread ( do not force the gage ), the step is required to be flush with the large end of the product thread within a tolerance of plus or minus one turn.
The taper pipe thread ring gage has a thickness equal to the L1 length.The ring’s large end (marked face) is turned hand tight onto the external pipe thread until it stops ( do not force the gage ). The small end of the ring gage is required to be flush with the small end of the pipe within a tolerance of plus or minus one turn. 
      NPT L1 Basic Type – one step is provided which corresponds to basic size of component.
      NPT L1 Limit Type – Gauge has three steps. These steps corresponds to minimum, basic and maximum size of components.
 
NPT
Gage Code Thread/perinch Pitch(mm) Taper
1/16-27npt 27 0.941 1:16
1/8-27npt 27 0.941
1/4-18npt 18 1.411
3/8-18npt 18 1.411
1/2-14npt 14 1.814
3/4-14npt 14 1.814
1-11.5npt 11.5 2.209
1 1/4-11.5npt 11.5 2.209
1 1/2-11.5npt 11.5 2.209
2-18npt 11.5 2.209
2 1/2-8npt 8.0 3.175
3-8npt 8.0 3.175
…… …… ……
npt 8.0 3.175
 
 
Gage Code
Thread/perinch Pitch(mm) Taper
1/16-27nptf 27 0.941 1:16
1/8-27nptf 27 0.941
1/4-18nptf 18 1.411
3/8-18nptf 18 1.411
1/2-14nptf 14 1.814
3/4-14nptf 14 1.814
1-11.5nptf 11.5 2.209
1 1/4-11.5nptf 11.5 2.209
1 1/2-11.5nptf 11.5 2.209
2-18nptf 11.5 2.209
2 1/2-8nptf 8.0 3.175
3-8nptf 8.0 3.175
…… …… ……
npt 8.0 3.175
 
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