Foshan Jinqiu Valve Co., Ltd. is a professional manufacturer of various valves with many years of production experience. Among its products, the customized knife gate valve is a type of valve that cuts off the flow of media using a knife-edge gate. It is suitable for controlling the flow of media containing suspended particles and fibrous materials, such as pulp, fly ash, chemical raw materials, and sewage. Structurally, it is available in two types: rising stem and non-rising stem. Actuation methods include manual, pneumatic, and electric, adaptable to different pipeline system requirements. JQF Valve welcomes your inquiries.
The main feature of durable JQF knife gate valves is their thin, knife-shaped gate, which possesses extremely strong shearing capabilities. They are particularly suitable for handling viscous or easily scaled media containing fibers, solid particles, slurries, powders, etc. The beveled blade at the bottom of the gate provides shearing functionality, scraping away adhering substances from the sealing surface. Suitable for industries such as paper making, mining, wastewater treatment, food, and pharmaceuticals. We welcome customers to visit our factory for guidance and business discussions.
| Feature Category | Technical Specifications | Engineering Benefits |
| Compact Structural Design | • 40-60% shorter face-to-face dimensions vs. standard gate valves• Monoblock precision casting construction | • ≥15% material savings• 25-30% reduction in piping system weight |
| Space Optimization | • Installation height = 1/3 of conventional valves• Topologically optimized reinforcing ribs | • Saves ≥200mm vertical space• Reduces pipeline supports by 30% |
| Corrosion-Resistant Gate | • AISI 304/316L austenitic stainless steel forged gate• Ra0.8μm mirror-finished sealing surface | • Chloride resistance ≥20,000 ppm• Corrosion rate ≤0.0015 mm/year• 3-5x extended seal life |
| Dynamic Sealing System | • Triple PTFE V-ring stem packing• Self-adjusting compression mechanism | • Seal pressure ≥3.5 MPa • Operation torque ≤150 N·m • ≥10,000 cycle leak-free performance |
| Severe Service Capability | • 15° beveled shearing edge• Solid one-piece gate structure | • Severs solids ≤Φ8mm• >98% fibrous material cut efficiency• Slurry flow resistance ≤0.02 MPa |
| High-P/T Adaptation | • Stellite 6 hard-faced gate• Fire-safe design per API 607 | • Temp range: -196°C to 550°C• Pressure: Class150–Class600)• 80% reduction in erosive wear |
