8″ pvc knife gate valve
Reliable, Corrosion-Proof Flow Isolation for PVC Systems
Our 8” PVC Knife Gate Valve is engineered to provide reliable, non-corroding flow control for low-pressure fluid transfer and irrigation applications. Constructed from durable PVC (Polyvinyl Chloride), this valve offers fast, quarter-turn shutoff and superior chemical resistance compared to traditional metal valves, making it the ideal choice for water systems, chemical feed lines, and pool/spa equipment.
🔑 Key Features & Design Advantages
| Feature | Detail | Benefit |
| PVC Construction | Made entirely from durable, high-impact PVC (e.g., Schedule 40 or Schedule 80 equivalent). | Total Corrosion Immunity: Unaffected by rust, scale, or aggressive chemicals, ensuring a long service life. |
| Full Port Design | The valve bore is the same size as the nominal pipe size (8”). | Minimum Pressure Drop: Allows for maximum flow efficiency and reduced pumping costs. |
| Non-Rising Stem | The gate moves up and down inside the body without the stem extending above the handwheel. | Compact Installation: Requires less head space, ideal for tight quarters or buried applications. |
| Easy Maintenance | Simple construction allows for quick in-line inspection and replacement of seals/O-rings. | Reduced Downtime: Quick maintenance minimizes system interruption. |
| Seal Type | Equipped with long-lasting EPDM or FKM (Viton) seals/O-rings. | Excellent Sealing: Provides bubble-tight shutoff against back pressure and resists chemical attack. |
📊 Technical Specifications
| Parameter | Specification |
| Size | 8” (Nominal Diameter DN200) |
| Body Material | PVC |
| Seal Material | EPDM (Standard) or FKM (Viton) (For high-chemical resistance) |
| End Connections | Socket/Slip (for solvent cement welding) or Threaded (NPT) |
| Maximum Working Pressure | Typically 150PSI or 100PSI (Varies by schedule/manufacturer) |
| Temperature Range | Up to 140°F (60°C) |
| Flow Control | On/Off Isolation (Not recommended for throttling) |
🌍 Typical Applications
The 4” PVC Gate Valve is widely used where large flow rates and chemical compatibility are required:
- Residential & Commercial Plumbing: Isolation for water supply lines.
- Irrigation Systems: Main line control for farm or landscape irrigation.
- Swimming Pools & Spas: Shutoff valve for pumps, filters, and chlorinators.
- Chemical Transfer: Used in low-pressure lines handling fertilizers, mild acids, or alkalines.
- Water Treatment: Isolation in filtration and reverse osmosis systems.
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