Brass Reducing Nipples
A brass reducing nipple is a brass nipple with male threads of different sizes on each end, connecting two female-threaded parts of different sizes.
It is used for size transitions between valves and fittings of different sizes, meters and pipe, and at manifold outlets. 18 sizes from 3/8″ × 1/8″ to 2″ × 1 1/2″ are available.
Main Applications
- Connecting valves and fittings of different sizes
- Size matching in meter and filter groups
- Transitions at manifold outlets
- Compressed air equipment connections
- Instrument adaptors
- Combi boiler outlet connections
Technical Data
| Fitting type | Reducing nipple, two male-threaded ends |
|---|---|
| Thread | Male thread, G or R (depending on model) |
| Size range | 3/8″ × 1/8″ – 2″ × 1 1/2″, 18 sizes (product range) |
| Material | Brass CW617N (similar manufacturer sheet; depending on model) |
| Nominal pressure | PN16 (similar manufacturer sheet) |
| Max. working temperature | 160 °C (similar manufacturer sheet) |
| Surface | Natural brass |
| Example sizes | 1/2″ × 3/8″, 3/4″ × 1/2″, 1″ × 3/4″, 1 1/2″ × 1″ (product range) |
| Equal-size type | With a brass nipple |
| Male-female transition | With a brass reducing bush |
| Production | Machined from bar (depending on model) |
| Media | Water, heating water, compressed air |
Material Options
| Part | Brass | Nickel-plated brass | Stainless (AISI 304) |
|---|---|---|---|
| Body | Brass CW617N (depending on model) | Brass body, nickel plated (depending on model) | AISI 304 stainless steel |
| Surface | Natural brass | Nickel plating | Uncoated stainless |
| Thread | Male thread, G / R (depending on model) | Depending on model | ISO 7-1 |
| Pressure rating | PN16, max. 160 °C (similar manufacturer sheet) | Depending on model | 20 bar −20…+38 °C (ISO 4144) |
| Suitable media | Domestic water, heating water, compressed air | Visible fixture connections | Food, chemicals, seawater |
Which material? When a reducing nipple is chosen in the same material as the two brass parts it connects, there is no dissimilar metal contact at the threads.
Advantages
Nipple and Reducer in One
- One body instead of two parts
18 Sizes
- From small instrument lines up to 2″
Compact Group
- Valve and meter groups stay short
Easy Tightening
- Hexagon middle section
Construction and Design Features
- Male threads of different sizes on both ends
- Hexagon wrench surface in the middle
- Brass body machined from bar
- Screwed installation without welding
Send the large and small end size and quantity; we will confirm the suitable reducing nipple from stock.
How to Choose?
- Measure both female threadsDetermine the female thread sizes of the two parts to connect.
- Choose the fittingUse a nipple if the sizes are equal, a reducing nipple if they differ.
- Check the thread typeConfirm whether the parts have G or R threads.
- Write the sizeState the larger size first when ordering.
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Why ORFA?
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