#   Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use   RWB3172

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   [![RWB3172](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/RWB3172.jpg "Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use")](https://www.rhsboating.com.au/images/com_hikashop/upload/RWB3172.jpg "Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use")[![vultail-1500x1500](https://www.rhsboating.com.au/images/com_hikashop/upload/thumbnails/300x300/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use")](https://www.rhsboating.com.au/images/com_hikashop/upload/chatgpt_image_sep_24_2026_09_02_48_am.jpg "Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use")

    $6.40  each

            Brand: [Vultail Marine Plumbing & Hose Fittings](https://www.rhsboating.com.au/brands-listing/vultail.html)

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    ### Vultail 1 1/4in x 1 1/4in Black Plastic Double-Male Hex Nipple for Marine Use

This Vultail black plastic fitting connects two female threaded components using male threads of 1 1/4 inch and 1 1/4 inch. The hex-nipple form provides a short linking component for a compatible water-plumbing assembly, with each end selected to match its receiving part. Compare the 1 1/4 inch male end and 1 1/4 inch male end separately with the two female connections. This version keeps the same nominal size through the connection. Check the thread specification and available engagement rather than assuming that the external diameter alone establishes a match. The body material and connection layout make it a size-specific water fitting; they do not establish universal compatibility with every onboard hose, pump or pipe system. Compare the complete connection arrangement before choosing a replacement, especially where more than one nominal size or thread type is present.

### Choosing and using this product

Verify the mating threads and the sealing method recommended for the connected components. Start the threads squarely, avoid cross-threading and use an assembly method suitable for plastic fittings rather than relying on excessive force. Allow room for both connected components and check that tightening one side will not twist or overload an already installed fitting on the other side. Support the surrounding pipework or equipment so the fitting is not used to carry an unsupported load. Keep enough clearance to reach the connection when it needs inspection or replacement. Confirm any required working pressure, temperature limit and fluid suitability with the supplier before using the fitting in a demanding application. After assembly, inspect the connection for leakage using the procedure appropriate to the complete system, and retain access for routine checks.

### Product details

- Brand: Vultail.
- Material: black plastic.
- Intended use: water connections.
- Male threaded ends with central hex form.
- Male threaded end one: 1 1/4 inch.
- Male threaded end two: 1 1/4 inch.
- Configuration: hex nipple.