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- Fittings /
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- Threaded Tube Fittings
Product Description




Welcome to AF Hydro!
AF Hydro is an one-stop destination for low pressure valves and fittings. Established in 2016, we strive to deliver top-notch products to our clients. A wide selection of high-quality products are available and designed to ensure seamless flow and efficiency in your operations.
Class 150 Fitting SS316 - Reducing Coupling NPT Thread
Class 150 fittings are alternatively referred to as low-pressure fittings, manufactured according to ASTM A351 standard and serve purposes such as pipe connections, directional alteration, and regulation of low-pressure fluids and gases, with a maximum operational pressure of 150 PSI. These fittings can be applied in industries such as ships building, plumbing and fire protection. A reducing coupling act as a connector in between pipe of different diameter to allow smooth transition.
- Applied to connect bore pipes of different diameter.
- Made of stainless steel 316 material that ensure corrosion resistance.
- Compatible across various industries.
- Pressure rating up to 150 PSI.
- Commonly applied in low pressure applications

To install the reducing coupling, kindly refer to the steps below;
- Wrap the male fitting with Teflon tape or plumber's tape to create a more secure seal to avoid leakage.
- Ensure that the female threads of the reducing coupling engage properly with the male threads of the pipes.
- Properly position the coupling to align with the system requirements and hand-tighten the coupling initially, and then use a wrench to tighten it
- Check for any signs of leaks or irregularities.
Product Specifications
Product Type | Class 150 Reducing Coupling |
Connection Type | 2 NPT Female threaded ends |
Size Range | ¼” x 1/8” to 2” x 1 1/2” |
Material | Made of Stainless Steel SS316 grade with excellent corrosion resistance in environments with high exposure to moisture. |
Working Pressure | Maximum working pressure of 150 PSI. |
Usage | To connect and extend pipeline. |
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