Pneumatic Knife Gate Valve
Description
Pneumatic Knife Gate Valve – Technical Datasheet
1. Product Overview
This product is a pneumatically actuated knife gate valve designed for harsh industrial applications involving slurries, highly viscous fluids, and bulk solids. As shown in the images, it features a robust stainless steel valve body, a precision-machined stainless steel gate, and a high-performance pneumatic cylinder actuator. The valve is equipped with an integrated control system including a solenoid valve, air filter regulator with a pressure gauge, and dual limit switches for remote position feedback. It is widely used in wastewater treatment, mining, pulp and paper, chemical processing, and power plants.
2. Technical Specifications (As shown: 3″ Class 150)
| Parameter | Specification |
|---|---|
| Product Name | Pneumatic Knife Gate Valve |
| Brand | SAVVY |
| Nominal Diameter (DN) | DN50 – DN600 (Image shows 3″ / DN80) |
| Nominal Pressure (PN) | PN10 / PN16 / Class 150 (Marked “3-150” on body) |
| Connection Type | Flanged (Multi-hole drilling, standard ANSI/DIN/JIS available) |
| Operation Mode | Pneumatic (Double Acting or Spring Return) |
| Applicable Temperature | -20°C ~ +120°C (Depends on seat material) |
| Applicable Medium | Slurry, sewage, pulp, ash, chemical liquids, bulk solids |
| Leakage Class | Zero Leakage (Metal-to-Metal or Soft Seat) |
| Air Supply Pressure | 0.4 – 0.7 MPa (4 – 7 bar) |
3. Material of Main Parts
| Part Name | Material Specification |
|---|---|
| Valve Body | Stainless Steel (CF8 / SS304 or CF8M / SS316) |
| Gate / Disc | Stainless Steel (SS304 / SS316), precision machined |
| Stem | Stainless Steel (SS304 / SS316) |
| Seat / Seal | EPDM / NBR / PTFE / Metal Seat |
| Pneumatic Cylinder | Aluminum Alloy Cylinder (Silver) with Carbon Steel End Caps (Black) |
| Mounting Bracket | Carbon Steel (Blue Coated) |
| Solenoid Valve | AIRTAC / SMC / Custom (Black body) |
| Air Filter Regulator | AIRTAC / SMC type with pressure gauge and transparent bowl |
| Limit Switch Box | Two mechanical limit switches (Black housing) for Open/Close position feedback |
4. Applicable Standards
| Standard Type | Reference Standard |
|---|---|
| Design & Manufacture | API 600 / MSS SP-81 / DIN 3352 / GB/T 12234 |
| Flange Connection | ANSI B16.5 / DIN 2501 / JIS B2212 / GB/T 17241.6 |
| Face to Face | MSS SP-81 / API 609 / EN 558 |
| Pressure Test | API 598 / ISO 5208 / GB/T 13927 |
5. Key Features
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Excellent Cutting Ability: The sharp-edged stainless steel gate cuts through slurries, fibers, and solid particles without clogging, ensuring a tight seal.
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Fully Automated Control: The pneumatic actuator provides rapid linear movement for opening and closing. It can be easily integrated into a DCS/PLC system.
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Integrated Control Unit: Pre-assembled with a solenoid valve, air filter regulator (with gauge), and limit switches, saving on installation time and costs.
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Superior Corrosion Resistance: The CF8/CF8M stainless steel body and gate are ideal for corrosive and abrasive media.
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Visual Position Indicator: The blue bracket features a slot and a mechanical indicator to show the exact position of the gate (as seen in the images).
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Customizable Configurations: Available in double-acting or spring-return (fail-safe) designs, with a wide range of sizes and pressure ratings.
