NVS AISI 304 Stainless Steel Concentric Reducer (Butt-Weld, DIN 2616)
NVS AISI 304 Stainless Steel Concentric Reducer (Butt-Weld, DIN 2616)
NVS AISI 304 stainless steel concentric reducer: butt-weld ends, concentric (same axis). Size range: 3/4″ × 1/2″ – 12″ × 10″ (45 sizes). This fitting joins two pipes of different diameters on the same axis by butt welding and provides a gradual change in diameter.
AISI 304 (1.4301) is a general-purpose chromium-nickel stainless steel. It is widely used in water, heating and cooling, compressed air, food processing and indoor and outdoor applications.
Applications
- Diameter transitions in process and food piping
- Pump, tank and equipment inlets
- Heating and cooling installations
Size, weight and item code table
| Reducer size | Height H (mm) | Outside diameter (mm) | Wall thickness (mm) | Weight | Item code |
|---|---|---|---|---|---|
| 3/4″ × 1/2″ (Ø26.9mm × Ø21.3mm) | 38 | 26.7 | 2.1 | 90 g | NVSKR3042015 |
| 1″ × 1/2″ (Ø33.7mm × Ø21.3mm) | 50 | 33.4 | 2.7 | 100 g | NVSKR3042515 |
| 1″ × 3/4″ (Ø33.7mm × Ø26.9mm) | 50 | 33.4 | 2.7 | 110 g | NVSKR3042520 |
| 1¼″ × 1/2″ (Ø42.4mm × Ø21.3mm) | 50 | 42.4 | 2.7 | 110 g | NVSKR3043215 |
| 1¼″ × 3/4″ (Ø42.4mm × Ø26.9mm) | 50 | 42.4 | 2.7 | 110 g | NVSKR3043220 |
| 1¼″ × 1″ (Ø42.4mm × Ø33.7mm) | 50 | 42.4 | 2.7 | 130 g | NVSKR3043225 |
| 1½″ × 1/2″ (Ø48.3mm × Ø21.3mm) | 63 | 48.3 | 2.7 | 155 g | NVSKR3044015 |
| 1½″ × 3/4″ (Ø48.3mm × Ø26.9mm) | 63 | 48.3 | 2.7 | 175 g | NVSKR3044020 |
| 1½″ × 1″ (Ø48.3mm × Ø33.7mm) | 63 | 48.3 | 2.7 | 175 g | NVSKR3044025 |
| 1½″ × 1¼″ (Ø48.3mm × Ø42.4mm) | 63 | 48.3 | 2.7 | 200 g | NVSKR3044032 |
| 2″ × 1/2″ (Ø60.3mm × Ø21.3mm) | 76 | 60.3 | 2.7 | 200 g | NVSKR3045015 |
| 2″ × 3/4″ (Ø60.3mm × Ø26.9mm) | 76 | 60.3 | 2.7 | 220 g | NVSKR3045020 |
| 2″ × 1″ (Ø60.3mm × Ø33.7mm) | 76 | 60.3 | 2.7 | 240 g | NVSKR3045025 |
| 2″ × 1¼″ (Ø60.3mm × Ø42.4mm) | 76 | 60.3 | 2.7 | 260 g | NVSKR3045032 |
| 2″ × 1½″ (Ø60.3mm × Ø48.3mm) | 76 | 60.3 | 2.7 | 280 g | NVSKR3045040 |
| 2½″ × 1″ (Ø76.1mm × Ø33.7mm) | 89 | 76.1 | 3 | 350 g | NVSKR3046525 |
| 2½″ × 1¼″ (Ø76.1mm × Ø42.4mm) | 89 | 76.1 | 3 | 390 g | NVSKR3046532 |
| 2½″ × 1½″ (Ø76.1mm × Ø48.3mm) | 89 | 76.1 | 3 | 430 g | NVSKR3046540 |
| 2½″ × 2″ (Ø76.1mm × Ø60.3mm) | 89 | 76.1 | 3 | 440 g | NVSKR3046550 |
| 3″ × 1″ (Ø88.9mm × Ø33.7mm) | 89 | 88.9 | 3 | 400 g | NVSKR3048025 |
| 3″ × 1¼″ (Ø88.9mm × Ø42.4mm) | 89 | 88.9 | 3 | 440 g | NVSKR3048032 |
| 3″ × 1½″ (Ø88.9mm × Ø48.3mm) | 89 | 88.9 | 3 | 450 g | NVSKR3048040 |
| 3″ × 2″ (Ø88.9mm × Ø60.3mm) | 89 | 88.9 | 3 | 480 g | NVSKR3048050 |
| 3″ × 2½″ (Ø88.9mm × Ø76.1mm) | 89 | 88.9 | 3 | 550 g | NVSKR3048065 |
| 4″ × 1½″ (Ø114.3mm × Ø48.3mm) | 100 | 114.3 | 3 | 630 g | NVSKR30410040 |
| 4″ × 2″ (Ø114.3mm × Ø60.3mm) | 100 | 114.3 | 3 | 660 g | NVSKR30410050 |
| 4″ × 2½″ (Ø114.3mm × Ø76.1mm) | 100 | 114.3 | 3 | 700 g | NVSKR30410065 |
| 4″ × 3″ (Ø114.3mm × Ø88.9mm) | 100 | 114.3 | 3 | 750 g | NVSKR30410080 |
| 5″ × 2½″ (Ø139.7mm × Ø76.1mm) | 125 | 139.7 | 3.4 | 1.1 kg | NVSKR30412565 |
| 5″ × 3″ (Ø139.7mm × Ø88.9mm) | 125 | 139.7 | 3.4 | 1.2 kg | NVSKR30412580 |
| 5″ × 4″ (Ø139.7mm × Ø114.3mm) | 125 | 139.7 | 3.4 | 1.3 kg | NVSKR304125100 |
| 6″ × 2½″ (Ø168.3mm × Ø76.1mm) | 138 | 168.3 | 3.4 | 1.35 kg | NVSKR30415065 |
| 6″ × 3″ (Ø168.3mm × Ø88.9mm) | 138 | 168.3 | 3.4 | 1.5 kg | NVSKR30415080 |
| 6″ × 4″ (Ø168.3mm × Ø114.3mm) | 138 | 168.3 | 3.4 | 1.6 kg | NVSKR304150100 |
| 6″ × 5″ (Ø168.3mm × Ø139.7mm) | 138 | 168.3 | 3.4 | 1.75 kg | NVSKR304150125 |
| 8″ × 3″ (Ø219.1mm × Ø88.9mm) | 150 | 219.1 | 3.7 | 2.4 kg | NVSKR30420080 |
| 8″ × 4″ (Ø219.1mm × Ø114.3mm) | 150 | 219.1 | 3.7 | 2.55 kg | NVSKR304200100 |
| 8″ × 6″ (Ø219.1mm × Ø168.3mm) | 150 | 219.1 | 3.7 | 2.85 kg | NVSKR304200150 |
| 10″ × 4″ (Ø273mm × Ø114.3mm) | 175 | 273 | 4.2 | 2.95 kg | NVSKR304250100 |
| 10″ × 5″ (Ø273mm × Ø139.7mm) | 175 | 273 | 4.2 | 3.3 kg | NVSKR304250125 |
| 10″ × 6″ (Ø273mm × Ø168.3mm) | 175 | 273 | 4.2 | 3.8 kg | NVSKR304250150 |
| 10″ × 8″ (Ø273mm × Ø219.1mm) | 175 | 273 | 4.2 | 4.2 kg | NVSKR304250200 |
| 12″ × 6″ (Ø323.8mm × Ø168.3mm) | 200 | 323.9 | 4.5 | 5.7 kg | NVSKR304300150 |
| 12″ × 8″ (Ø323.8mm × Ø219.1mm) | 200 | 323.9 | 4.5 | 6 kg | NVSKR304300200 |
| 12″ × 10″ (Ø323.8mm × Ø273mm) | 200 | 323.9 | 4.5 | 6.5 kg | NVSKR304300250 |
Dimensions are in millimeters. Weights are approximate unit weights. Minor variations between production batches are possible.
Technical specifications
| Specification | Value |
|---|---|
| Material | AISI 304 stainless steel |
| Material number | 1.4301 · X5CrNi18-10 |
| Design | Butt-weld ends, concentric (same axis) |
| Standard | DIN 2616 |
| End type | Butt-weld |
| Axis | Concentric (same axis) |
| Size designation | Large end × small end pipe outside diameter |
| Size range | 3/4″ × 1/2″ – 12″ × 10″ |
| Number of sizes | 45 |
| Brand | NVS |
Selection and installation notes
- On horizontal lines, at points where air pockets or deposits can form, an eccentric reducer can also be considered.
- Select a filler wire or electrode that matches the grade; after welding, clean the area by pickling and passivation.
- Choose grade 316 where sea water, salty environments or chloride cleaning chemicals are present.
- AISI 304 is intended for general use; choose AISI 316 for chloride media, sea water and swimming pool applications.
- 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 316 grade. See the full range in Stainless Steel Fittings.