1. Product Overview
This manual provides instructions for the safe and effective use of your 304 Stainless Steel Pipe Fitting. This fitting is designed for connecting pipes in water, gas, and oil applications, featuring BSP male to female threads and available in various DN sizes.

Figure 1: Overview of the 304 Stainless Steel Pipe Fitting.
2. Safety Information
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years or any individuals who have a tendency to place inedible objects in their mouths.
Always ensure proper handling and installation to prevent injury or damage to property.
3. Setup and Installation
3.1 Before Installation
- Inspect the fitting for any damage or manufacturing defects.
- Ensure the pipe ends and fitting threads are clean and free of debris.
- Verify that the thread dimensions of the pipes match the fitting (e.g., BSP 1/2" to BSP 1/2").
3.2 Installation Steps
- Clean Interfaces: Ensure all connecting interfaces (pipe threads and fitting threads) are thoroughly clean and free of any dirt, metal shavings, or other debris.
- Apply Sealing Compound: Apply an appropriate thread sealant (e.g., PTFE tape or pipe dope) to the male threads of the pipe or fitting. This helps ensure a leak-proof seal.
- Connect Fitting: Hand-tighten the fitting onto the pipe threads.
- Secure with Wrench: Using an appropriate wrench, tighten the fitting securely. Avoid over-tightening, as this can damage the threads or the fitting itself.

Figure 2: Example of a pipe fitting connection.
4. Operating Instructions
This pipe fitting is a passive component designed to create a secure connection between two pipes. Once installed correctly, it facilitates the flow of water, gas, or oil within the specified pressure limits.
- Ensure the system pressure does not exceed the maximum operating pressure of 1 MPa (143 PSI).
- Regularly check for any signs of leakage after initial installation and during operation.
5. Maintenance
- Storage: If not in use, store the fitting in a dry location to prevent rusting and corrosion.
- Inspection: Periodically inspect installed fittings for any signs of corrosion, wear, or damage.
- Leak Check: Regularly check connections for leaks, especially in critical applications.
6. Troubleshooting
6.1 Leakage
If a leak occurs at the connection point:
- Ensure the fitting is fully tightened.
- Verify that the thread sealant (PTFE tape or pipe dope) was applied correctly and has not failed. Reapply if necessary.
- Check for any damage to the threads on either the fitting or the pipe.
6.2 Inability to Connect
If the fitting cannot be properly connected to the pipe:
- Verify that the interface dimensions and thread types (e.g., BSP) are compatible between the fitting and the pipe.
- Check for any obstructions or debris within the threads.
- Inspect for any cross-threading that may have occurred during initial attempts to connect.
7. Specifications
| Feature | Specification |
|---|---|
| Material | 304 Stainless Steel |
| Operating Pressure | 1 MPa (143 PSI) |
| Connection Type | BSP Male to Female |
| Technics | Forged |
| Shape | Equal |
| Origin | Mainland China |
| Certification | None |
7.1 Thread Size Chart
Refer to the table below for detailed dimensions of various DN (Diameter Nominal) sizes and their corresponding BSP (British Standard Pipe) thread equivalents.

Figure 3: Detailed thread size chart for DN and BSP equivalents.
| DN Size | BSP Equivalent | Approx. Diameter (mm) | Approx. Diameter (inch) |
|---|---|---|---|
| DN6 | 1/8" | 9.5 | 0.374 |
| DN8 | 1/4" | 12.5 | 0.4724 |
| DN10 | 3/8" | 16 | 0.6299 |
| DN15 | 1/2" | 20 | 0.7874 |
| DN20 | 3/4" | 26 | 1.0236 |
| DN25 | 1" | 32 | 1.2598 |
| DN32 | 1-1/4" | 41.5 | 1.6338 |
| DN40 | 1-1/2" | 47.5 | 1.8503 |
| DN50 | 2" | 59.6 | 2.346 |
7.2 Example Dimensions (1/2" Fitting)
For a 1/2" BSP fitting, typical dimensions are approximately:
- Male Thread Width: 20.5 mm
- Total Length: 41 mm
8. User Tips
- Always use a high-quality thread sealant (e.g., PTFE tape or pipe dope) on male threads to ensure a leak-proof connection.
- Before final tightening, ensure the fitting is aligned correctly to prevent cross-threading.
- For critical applications, perform a pressure test after installation to confirm the integrity of the connection.
9. Warranty and Support
9.1 After-Sales Service
- Return Policy: 7-day no-reason return or exchange.
- Warranty: One-year warranty for free repair against non-man-made damage.
9.2 Additional Resources
For further details or a downloadable version of this manual, please refer to the official PDF document: User Manual (PDF).