Engineered for demanding industrial applications, the pneumatic operated knife gate valve provides reliable, automated isolation for slurries, powders, and fibrous media. Its robust construction and full-bore design ensure unobstructed flow, minimizing pressure drop and preventing clogging in critical process lines. This valve is specifically designed to handle abrasive and viscous fluids with high efficiency and long service life.
Key Product Highlights
1. Full bore design for unobstructed flow and zero clogging
2. Knife-edge gate for effective shear cutting of fibers and solids
3. Cavity-free body design prevents media trapping and buildup
4. IP67 protected pneumatic actuator for harsh environments
5. V-type PTFE + Flexible Graphite packing for superior sealing
6. Epoxy coating ≥250 μm for exceptional corrosion resistance
7. 20-30% lighter than conventional gate valves for easy installation
8. Multiple seat options including Metal Seat for high temperatures
Detailed Technical Specifications
|
Parameter |
Technical Specification |
|
Size Range |
DN50–DN1200 (2"–48") |
|
Pressure Rating |
PN6/PN10/PN16/PN25, Class 150 |
|
Body Material |
WCB (Carbon Steel) / CF8 (304SS) / CF8M (316SS) / CF3M (316L) / Ductile Iron GGG50 |
|
Gate Material |
2Cr13 (420SS) / 304SS / 316SS / 316L / Hardened Steel / Tungsten Carbide Coated |
|
Seat Material |
EPDM / NBR / PTFE / Metal Seat (Stellite overlay) / Ceramic |
|
Stem Material |
2Cr13 (420SS) / 304SS / 316SS |
|
Packing |
V-type PTFE + Flexible Graphite Rings |
|
Connection Type |
Wafer / Lug Type / Flanged |
|
Flange Standard |
EN 1092-1 / ASME B16.5 / DIN 2501 / BS 4504 |
|
Actuator Type |
Pneumatic Double Acting / Single Acting (Spring Return) |
|
Air Supply Pressure |
4–7 bar (0.4–0.7 MPa) |
|
Solenoid Valve Voltage |
DC 24V / AC 110V / AC 220V |
|
Control Mode |
On/Off Type |
|
Accessories |
Limit Switch Box / Positioner / Solenoid Valve / Air Filter Regulator / Manual Override |
|
Design Standard |
MSS SP-81 / JB/T 8691 / ANSI B16.10 |
|
Face-to-Face |
MSS SP-81 / GB/T 12221 / ANSI B16.10 |
|
Pressure Test |
API 598 / GB/T 13927 / EN 12266-1 |
|
Temperature Range |
-40°C to +80°C (EPDM) / +180°C (PTFE) / +425°C (Metal Seat) |
|
Leakage Class |
Soft Seat - Rate A (Zero Leakage) / Metal Seat - Rate D |
|
Gate Design |
Knife-edge bottom for shear cutting of fibers and solids |
|
Body Design |
Cavity-free, unidirectional, full port round bore |
|
Protection Class |
IP67 (pneumatic actuator) |
|
Surface Coating |
Epoxy coating ≥250 μm (fusion bonded) |
|
Weight Advantage |
20-30% lighter than conventional gate valves |
Target Industries
1. Mining & Mineral Processing
2. Pulp & Paper
3. Wastewater Treatment
4. Power Generation
5. Chemical Processing
6. Food & Beverage
7. Cement & Aggregate
8. Steel & Metallurgy
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FAQ
Q1: What is your Minimum Order Quantity (MOQ)?
A: We support a low MOQ starting from just 1 pieces, making it highly suitable for new brands, small-batch testing, and trial orders.
Q2: Can this valve handle abrasive slurries with high solid content?
A: Yes, the pneumatic operated knife gate valve is specifically engineered for abrasive media. The knife-edge gate shears through solids, while hardened steel, tungsten carbide, or ceramic seat options provide exceptional wear resistance in mining, cement, and mineral processing applications.
Q3: What actuator fail-safe options are available?
A: Single-acting spring-return actuators are available for fail-open or fail-close configurations, ensuring automatic valve positioning during air supply failure for critical safety applications.
Q4: Are flange drilling patterns compatible with ASME and EN standards?
A: Yes, we offer multiple flange drilling options including ASME B16.5, EN 1092-1, DIN 2501, and BS 4504 to ensure compatibility with existing pipeline infrastructure worldwide.
Q5: What is the expected service life in abrasive applications?
A: Service life varies by media abrasiveness, but tungsten carbide coated gates typically last 3-5 times longer than standard 420SS gates in high-abrasion slurry service.
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