NPT Threaded Coupling — Class 150 (304 & 316 Stainless Steel)
Straight female-threaded NPT coupling for joining two inline male-threaded pipes of equal nominal size. Offered in Class 150 304 and 316 stainless steel across nominal pipe sizes from 1/8" to 8".
Material options | 304 / 316 |
|---|---|
Connection | Female NPT × Female NPT (Straight Equal Coupling) |
Pressure class | Class 150 |
Nominal size range | 1/8"–8" |
Construction | Cast stainless steel straight coupling body (Class 150 series) |
Size
Product overview
Construction, Pressure Class & Material Grades
Designed with Female NPT × Female NPT (Straight Equal Coupling) geometry (Cast stainless steel straight coupling body (Class 150 series)), this threaded stainless steel fitting joins mating tapered NPT pipe threads along metal-to-metal thread flanks. Manufactured as a 150 lb investment-cast stainless steel fitting series in 304 / 316 stainless steel.
Series Size Coverage & Thread Make-Up
Nominal pipe thread sizes span 1/8"–8" across the series; available size options and envelope dimensions vary by stainless steel grade. Verify mating NPT thread specifications and consult the dimensional table for the selected size row before ordering.
Technical specifications
Dimensional Reference · Class 150 · 304 Stainless Steel (1/8"–8")
Class 150 · 304 stainless steel · 1/8"–8"
Units: inches
| Specification reference | Nominal Size | W (IN) |
|---|---|---|
| CH-F057-001 | 1/8" | 1" |
| CH-F057-002 | 1/4" | 1.12" |
| CH-F057-003 | 3/8" | 1.19 |
| CH-F057-004 | 1/2" | 1.5" |
| CH-F057-005 | 3/4" | 1.56" |
| CH-F057-006 | 1" | 1.75" |
| CH-F057-007 | 1-1/4" | 2" |
| CH-F057-008 | 1-1/2" | 2.12 |
| CH-F057-009 | 2" | 2.5" |
| CH-F057-010 | 2-1/2" | 2.87 |
| CH-F057-011 | 3" | 3.18" |
| CH-F057-012 | 4" | 3.36 |
| CH-F057-013 | 6" | 4.37 |
| CH-F057-014 | 8" | - |
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