Right/Left Nipple M/M Black Cast Iron
Shipping and Delivery
Shipping and Delivery
| Product Type | Delivery Method | Preparation Time | Transport Time | Delivery Time |
|---|---|---|---|---|
| All Parts | Pickup Point | 0 to 3 days | 3 to 6 days | 3 to 9 days |
| All Parts | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 90cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes < 200cm | Home Delivery | 0 to 3 days | 3 to 5 days | 3 to 8 days |
| Tubes > 200cm | Home Delivery | 0 to 6 days | 6 to 10 days | 6 to 16 days |
| Assembled Products | Home Delivery & Pickup Point | 0 to 5 days | (see methods) | 3 to 11 days |
* Tubes longer than 90cm cannot be delivered to a pickup point
For orders of more than 50 units of the same item or more than 100 kg, restocking may exceptionally extend the delivery time by up to 10 working days.
For confirmation of delivery times on specific items, please send us a message
Right/Left Nipple M/M Black Cast Iron
- Material: Black malleable iron
- Colour: Grey / Dark grey
The right/left M/M nipple in black cast iron (ref. 281) has a right-hand male thread on one side and a left-hand male thread on the other. The left-hand side does not screw into a standard female fitting (which is right-hand tapped). It is used with the right/left coupling F/F (ref. 271) which screws over it, or with a left-hand tapped fitting (non-standard).
How does a right/left fitting work?
A standard fitting always screws in the same direction (clockwise). The right/left nipple has a reversed thread on one of its sides. Combined with the right/left coupling F/F, it forms a system where by turning the coupling, both sides tighten or loosen simultaneously. This allows you to connect or separate two fixed elements without turning them.
Coupling + Nipple: the essential pair
The right/left nipple is never used alone. It pairs with the right/left coupling F/F:
- The R/L nipple (M/M) screws into an existing female fitting (tee, elbow, flange…).
- The R/L coupling (F/F) covers the nipple and the adjacent fitting or pipe. Turning it tightens both sides at once.
Interesting use for decoration: in a frame or rectangular shape made of pipes and fittings, the last connection is impossible with standard fittings. The combination R/L nipple + R/L coupling + standard coupling closes the loop by tightening both sides simultaneously. A more compact and economical alternative to union fittings F/F.
Specifications
- Standard: Manufactured per EN 10242 and ISO 49. Malleable iron grade EN-GJMW-400-5 (per EN 1562).
- Threads: One right-hand male thread (R) + one left-hand male thread, per ISO 7-1 (BSP).
- Reliability: 100% leak-tested.
- Thread engagement: 10 to 15 mm
- Material: black malleable iron
- Colour: dark grey
Service conditions
- Max temperature: 155°C (water).
- Compatibility: Drinking water, wastewater, gas, steam, non-corrosive liquids.
Dimensions
Scroll the table horizontally to see all measurements.
| Size (inches) | Size (mm) | DN | Length L (mm) | Weight (kg) |
|---|---|---|---|---|
| 1/4" | 8×14 | DN8 | 28 | 0,029 |
| 3/8" | 12×17 | DN10 | 32 | 0,040 |
| 1/2" | 15×21 | DN15 | 38 | 0,059 |
| 3/4" | 20×27 | DN20 | 42 | 0,093 |
| 1" | 26×34 | DN25 | 47 | 0,162 |
| 1"1/4 | 33×42 | DN32 | 52 | 0,270 |
| 1"1/2 | 40×49 | DN40 | 56 | 0,280 |
| 2" | 50×60 | DN50 | 64 | 0,500 |
Related
Essential: Right/Left Coupling F/F Black Cast Iron
Compatible products: Black steel pipes · Black cast iron fittings
Useful guides:
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