| Application | sewage | Place of Origin | Shenzhen, China |
|---|---|---|---|
| Power | Pneumatic | Customized support | OEM, ODM |
| Warranty | 3 years | Model Number | DN50-DN600 |
| Temperature of Media | Low Temperature | Media | Serous fluid |
| Body material | Stainless Steel 316 | Disc | SS304/SS316 |
| Seal Material | NBR EPDM PTFE |
1. Introduction
The 4-inch two-way flanged stainless steel sector gate valve, also known as a stainless steel pneumatic knife gate valve, is designed for reliable operation in demanding applications. This valve is suitable for handling various media, including slurry, viscous fluids, and corrosive substances, making it an ideal choice for industries such as chemical processing, wastewater treatment, and food & beverage.
2. Features
- Material: High-grade stainless steel body and gate for superior corrosion resistance.
- Actuation: Pneumatic actuator for efficient and remote control operation.
- Design: Knife gate design to cut through thick media, ensuring smooth flow and minimal clogging.
- Seal: High-performance seals ensuring tight closure and preventing leakage.
- Operation: Suitable for both on-off and throttling applications.
3. Applications
- Chemical processing industry.
- Wastewater treatment plants.
- Food and beverage industry.
- Mining industry.
- Pulp and paper industry.
- Pharmaceutical industry.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Size | 4 inches (DN100) |
| Body Material | Stainless Steel (SS304/SS316) |
| Gate Material | Stainless Steel (SS304/SS316) |
| Seal Material | PTFE, EPDM, NBR |
| Actuator Type | Pneumatic |
| Pressure Rating | PN10/PN16 |
| Temperature Range | -20°C to 200°C (-4°F to 392°F) |
| Connection Type | Flanged |
| Face-to-Face Dimension | According to ISO 5752 |
| Media | Slurries, viscous fluids, corrosive substances |
| Operating Pressure | 0.6 MPa - 1.6 MPa |
| Actuation Pressure | 0.4 MPa - 0.7 MPa |
| Stroke Time | 2-5 seconds |
| End Connections | ANSI B16.5, DIN, JIS |
| Leakage Rate | Zero leakage (soft seal) |
| Testing Standard | API 598 |
5. Installation Instructions
- Preparation: Ensure the pipeline is clean and free of debris.
- Alignment: Align the valve with the pipeline flanges.
- Bolting: Secure the valve using appropriate bolts and nuts, ensuring even tightening.
- Actuator Connection: Connect the pneumatic actuator to the air supply as per the manufacturer's instructions.
- Testing: Test the valve for proper operation and check for leaks.
6. Maintenance
- Regular Inspection: Periodically inspect the valve for signs of wear or damage.
- Seal Replacement: Replace the seals if leakage is detected.
- Actuator Maintenance: Follow the actuator manufacturer's maintenance guidelines.
7. Safety Precautions
- Ensure the air supply is disconnected before performing any maintenance.
- Use appropriate personal protective equipment (PPE) when handling the valve.
- Follow all relevant safety standards and guidelines.
8. Troubleshooting
| Issue | Possible Cause | Solution |
|---|---|---|
| Valve does not open/close | Insufficient air supply | Check air pressure and connections |
| Leakage through the seal | Worn or damaged seal | Replace the seal |
| Actuator malfunction | Actuator failure | Inspect and repair/replace actuator |
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