| Application | General | Place of Origin | Shenzhen, China |
|---|---|---|---|
| Power | Manual | Customized support | OEM, ODM |
| Warranty | 2 years | Model Number | PZ73H |
| Temperature of Media | High Temperature, Low Temperature, Medium Temperature, Normal Temperature | Brand Name | SHANGCHENG |
| Media | pulp | product name | Cast steel knife gate valve |
| Working pressure | 1.0-1.6Mpa (10-25bar) | Stem | Stainless iron |
| Body material | Cast steel (WCB) | Valve plate material | SS201/SS304/SS316/SS316L |
| sealing material | SS304/fluororubber/silicone rubber | temperature | -29℃-427℃ |
| Working medium | Sewage, pulp, etc | Connection type | Clamp valves/Flange link |
| operation | Hand wheel, pneumatic, electric |
1. Introduction
The Cast Steel Lug Type Knife Gate Valve with a One-Way Seal is designed for handling abrasive and corrosive applications where unidirectional sealing is required. This valve is ideal for industries such as mining, wastewater treatment, and pulp & paper, where reliable performance and durability are essential.
2. Features
- Material: Cast steel body for enhanced strength and corrosion resistance.
- Design: Lug type knife gate design for easy installation and maintenance.
- Seal: One-way resilient seal ensuring tight closure in one direction.
- Actuation: Available in manual, pneumatic, and hydraulic operation.
- Connection: Lugged ends for secure and versatile installation.
3. Applications
- Mining industry.
- Wastewater treatment plants.
- Pulp and paper industry.
- Chemical processing industry.
- Power plants.
4. Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Size | Various sizes available |
| Body Material | Cast Steel |
| Gate Material | Stainless Steel (SS304/SS316) |
| Seal Material | Resilient (EPDM, NBR, etc.) |
| Pressure Rating | PN16 |
| Temperature Range | -10°C to 120°C (14°F to 248°F) |
| Connection Type | Lugged |
| Face-to-Face Dimension | According to ISO 5752 |
| Media | Slurry, abrasive fluids, corrosive substances |
| Operating Pressure | 1.6 MPa |
| Actuation Options | Manual, Pneumatic, Hydraulic |
| Leakage Rate | Zero leakage (one-way 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 lugs.
- Bolting: Secure the valve using appropriate bolts and nuts, ensuring even tightening.
- Actuator Connection: If using a pneumatic or hydraulic actuator, connect it according to 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.
- Stem Maintenance: Ensure the stem operates smoothly and is free from debris.
- Actuator Maintenance: Follow the actuator manufacturer's maintenance guidelines if applicable.
7. Safety Precautions
- Ensure the pneumatic or power 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 | Obstruction in the gate area | Inspect and clean the gate area |
| Leakage through the seal | Worn or damaged seal | Replace the seal |
| Actuator malfunction (if applicable) | Actuator failure | Inspect and repair/replace actuator |
