NVS AISI 316 Stainless Steel Weld Nipple (Single-Threaded)
NVS AISI 316 Stainless Steel Weld Nipple (Single-Threaded)
The NVS AISI 316 stainless steel weld nipple has bSP male thread on one end, plain end for welding and is available in 12 sizes from 1/8″–4″. Used to change from a welded stainless pipeline to a threaded connection: the plain end is welded to the pipe and a valve or fitting is screwed onto the threaded end.
AISI 316 (1.4401) is a molybdenum-alloyed stainless steel. It resists chloride media, sea water and chemicals considerably better than grade 304 and is recommended for swimming pools, coastal, chemical and outdoor applications.
Threads are BSP (Whitworth); do not combine with NPT-threaded parts.
Size and item code table
| Size | Nominal size | Item code |
|---|---|---|
| 1/8″ | DN6 | NVSTN3166 |
| 1/4″ | DN8 | NVSTN3168 |
| 3/8″ | DN10 | NVSTN31610 |
| 1/2″ | DN15 | NVSTN31615 |
| 3/4″ | DN20 | NVSTN31620 |
| 1″ | DN25 | NVSTN31625 |
| 1¼″ | DN32 | NVSTN31632 |
| 1½″ | DN40 | NVSTN31640 |
| 2″ | DN50 | NVSTN316250 |
| 2½″ | DN65 | NVSTN31665 |
| 3″ | DN80 | NVSTN31680 |
| 4″ | DN100 | NVSTN3164100 |
Technical specifications
| Specification | Value |
|---|---|
| Material | AISI 316 stainless steel |
| Material number | 1.4401 · X5CrNiMo17-12-2 |
| Connection | BSP male thread on one end, plain end for welding |
| Standard | DIN 2999 |
| Size range | 1/8″–4″ |
| Number of sizes | 12 |
| Brand | NVS |
Selection and installation notes
- 304 or 316? Molybdenum-alloyed; chloride media, sea water, swimming pools and chemicals. For general water and heating applications the more economical AISI 304 is sufficient.
- Seal threaded joints with PTFE tape or a stainless-compatible liquid sealant; over-tightening stainless threads can cause galling.
- For welded joints use stainless pipe of the same grade and a suitable filler wire; clean the surface after welding (pickling / passivation).
- Joining stainless steel directly to galvanized or carbon steel pipe can cause galvanic corrosion; a dielectric (insulating) union is recommended between different metals.
For size selection, project lists and volume pricing, contact Novus Energy on WhatsApp +90 555 005 99 84 or at bilgi@novus.tr.
This item is also available in AISI 304 grade. See the full range in Stainless Steel Fittings.