Material & construction
Stainless steel threaded fitting in the selected cast or forged catalogue series; match both end threads and wall section.
WOG-405 / NPT threaded fittings
NPT Reducing Coupling
Compact standard connections for process piping, utility lines and oilfield maintenance.
| Nominal size | NPS 1/4-2 (DN 8-50) |
|---|---|
| Material | CF8M cast / F316 forged catalogue series |
| Pressure selection | By material and catalogue pressure-temperature table |
| Ends | Female NPT × smaller female NPT |
Industry reference selections; ordered specification requires supplier confirmation.
View catalogue page 58 ↗Options & acceptance
Choose catalogue NPS, class, material and end combination. Confirm dimensional gauges, heat identity and surface condition.
Application & RFQ details
RFQ: NPS, male/female NPT ends, material and pressure class or schedule. Specify the exact thread combination. NPT and BSP threads are not interchangeable.
Standards & documents
NPT per ASME B1.20.1; dimensional and rating basis by the exact series. Do not substitute low-pressure cast fittings for forged Class 3000.
Packing
Separated cartons on pallets; protect threads, sealing faces and fragile parts. State gross weight per package.
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