NVS AISI 316 Stainless Steel Threaded Union (Conical Seat)
NVS AISI 316 Stainless Steel Threaded Union (Conical Seat)
NVS AISI 316 stainless steel threaded union: BSP female thread on both ends, conical seat. Size range: ½″–4″ (9 sizes). This union has female threads on both ends and a conical seat; tightening the center nut joins the threaded line with a connection that can be taken apart later.
AISI 316 (1.4401) is a molybdenum-alloyed stainless steel. It resists chloride media, sea water and chemicals significantly better than grade 304 and is recommended for swimming pools, coastal sites, chemical plants and outdoor use.
Applications
- Detachable joint points in threaded lines
- Pump, filter and meter connections
- Water, air and process lines
- Food and beverage installations
Size, weight and item code table
| Nominal size | Length L (mm) | Weight | Item code |
|---|---|---|---|
| DN15 (½”) | 39 | 140 g | NVSDKR31615 |
| DN20 (¾”) | 45 | 190 g | NVSDKR31620 |
| DN25 (1”) | 33 | 200 g | NVSDKR31625 |
| DN32 (1¼”) | 50 | 400 g | NVSDKR31632 |
| DN40 (1½”) | 52 | 500 g | NVSDKR31640 |
| DN50 (2”) | 58 | 800 g | NVSDKR31650 |
| DN65 (2½”) | 71 | 1.1 kg | NVSDKR31665 |
| DN80 (3”) | 87 | 1.9 kg | NVSDKR31680 |
| DN100 (4”) | 98 | 3 kg | NVSDKR316100 |
Dimensions are in millimeters. Weights are approximate unit weights. Minor variations between production batches are possible.
Technical specifications
| Specification | Value |
|---|---|
| Material | AISI 316 stainless steel |
| Material number | 1.4401 · X5CrNiMo17-12-2 |
| Design | BSP female thread on both ends, conical seat |
| Standard | DIN 2999 · ISO 228 |
| Thread | BSP female |
| Seat | Conical |
| Size range | ½″–4″ |
| Number of sizes | 9 |
| Brand | NVS |
Selection and installation notes
- Use PTFE tape or a thread sealant; do not over-tighten stainless threads, as this can cause galling (cold welding).
- Do not scratch the conical seating surfaces; clean them before assembly.
- Grade 316 contains molybdenum and resists chloride media and sea water better than 304.
- Direct contact between stainless steel and galvanized or carbon steel can cause galvanic corrosion; use insulation (washers, unions) 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.