1. Product Overview
The CERTEON QF 304 Stainless Steel Needle Valve is a precision instrument designed for regulating the flow of various media, including oil, water, and gas. Constructed from high-grade stainless steel (SS304 or SS316L), it offers excellent resistance to corrosion and high pressure, ensuring reliable performance in diverse industrial and domestic applications. Its female threaded connections are available in multiple sizes, providing versatility for different piping systems.
2. Specifications
The QF 304 Stainless Steel Needle Valve is engineered to meet rigorous performance standards. Key specifications are detailed below:
| Specification | Details |
|---|---|
| Product Name | Stainless Steel Female Needle Valve |
| Material | SS304 / SS316L |
| Thread Size | 1/8" – 1" (BSP or NPT optional) |
| Domestic Size (CN) | 1/8", 1/4", 3/8", 1/2", 3/4", 1" |
| Working Pressure | 1–64 KG |
| Working Temperature | 10–90°C |
| Applicable Media | Oil, Water, Gas (corrosive & non-corrosive) |
| Motivity Type | Other (Manual) |
| Type | Valves |
3. Installation and Setup
Proper installation is crucial for the safe and effective operation of your needle valve. Follow these steps carefully:
- Preparation: Ensure the piping system is clean and free of debris. Verify that the valve's thread size matches your piping.
- Thread Type Confirmation: Confirm whether your system requires BSP or NPT threads. The valve's default connection standard is G Thread (BSP).
- Connection: Connect the valve to the female threaded pipe. Hand-tighten first, then use an appropriate wrench to secure the connection. Avoid over-tightening to prevent damage to threads or the valve body.
- No Welding Required: This valve is designed for easy connection without welding, making it suitable for environments where welding is hazardous or impractical. This ferrule connection is strong, pressure-resistant, highly sealed, and easy to install, enhancing safety and reliability.
- Leak Check: After installation, slowly introduce the media into the system and check all connections for leaks. Tighten any leaking connections as necessary.
4. Operating Instructions
The needle valve provides precise control over fluid or gas flow. Follow these guidelines for operation:
- Opening the Valve: Turn the black knob counter-clockwise to open the valve and allow media to flow.
- Closing the Valve: Turn the black knob clockwise to close the valve and stop media flow.
- Flow Regulation: Adjust the knob incrementally to achieve the desired flow rate. The fine threading of the needle allows for very precise adjustments.
- Pressure Considerations: Always operate the valve within its specified working pressure range (1-64 KG) and working temperature range (10-90°C).
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your needle valve.
- Cleaning: Periodically inspect the valve for any buildup or corrosion. Clean the exterior with a soft cloth. For internal cleaning, ensure the system is depressurized and drained before disassembly.
- Inspection: Check for any signs of wear, damage, or leaks around the connections and the valve stem.
- Reusability: All ferrule connection parts can be reinstalled multiple times, provided the components are undamaged and threads are clean and free of impurities. This feature allows for easy maintenance and component replacement without compromising integrity.
- Corrosion Resistance: The SS304/SS316L material provides excellent corrosion resistance, but regular checks are still recommended, especially when used with corrosive media.
6. Troubleshooting
Here are some common issues and their solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Leakage at connections | Improper tightening, damaged threads, or missing/damaged sealant. | Ensure connections are tightened correctly. Inspect threads for damage and apply appropriate thread sealant if necessary. Replace damaged components. |
| Difficulty turning knob | Internal debris, corrosion, or over-tightening. | Disassemble (if safe and system is depressurized) and clean internal components. Ensure not to over-tighten during operation. |
| Inconsistent flow control | Internal debris, worn needle/seat, or pressure fluctuations. | Clean the valve. If issue persists, inspect for worn parts and consider replacement. Check system pressure stability. |
7. User Tips
- Thread Compatibility: Always double-check the thread type (BSP or NPT) required for your application before installation to ensure a perfect fit and prevent leaks.
- Gentle Operation: While the valve is robust, operate the control knob gently for fine adjustments to prolong the life of the needle and seat.
- Cleanliness: Keep the valve and connection points clean during installation and maintenance to prevent impurities from affecting performance or causing damage.
- Reassembly Care: When reusing ferrule connections, ensure all parts are thoroughly cleaned and inspected for damage before reassembly to maintain a secure and leak-free seal.
8. Frequently Asked Questions (FAQs)
- Q1: Is this valve suitable for both corrosive and non-corrosive fluids?
- A1: Yes, it supports oil, water, gas, and corrosive media, especially when made from 316L stainless steel.
- Q2: What type of threads are available?
- A2: Standard BSP and NPT threads from 1/8" to 1" are available. Custom threading options are also supported.
- Q3: Can the valve be reused after disassembly?
- A3: Yes, all ferrule-type connections are reusable if components and threads remain undamaged and clean.
9. Warranty and Support
For any technical assistance, warranty claims, or inquiries regarding non-standard customization, please contact the manufacturer or seller directly. Ensure you have your purchase details readily available.
