Knife gate valves, also known as knife-shaped gate valves, are specifically designed for demanding industrial applications. With a stainless steel body and blade, the valve ensures reliable sealing by scraping off debris and preventing material buildup. These valves are ideal for industries such as papermaking, wastewater treatment, and bulk material transportation.

Applications:

• Papermaking and pulp industries
• Industrial and urban wastewater treatment
• Chemical plants, fly ash handling, and food processing

2. Product Features

1. Compact Design: Occupies minimal space, lightweight, easy to install, with wear-resistant and anti-blocking measures for long service life.
2. Flushing Ports: Multiple ports for air, steam, or water flushing prevent sediment buildup, suitable for challenging fluids.
3. Wear-Resistant Cone: The inlet end features a wear-resistant cone made from polyester or Ni-based cast iron to protect seals from particle erosion.
4. PTFE Scraper: Prevents abrasive particles such as dust and gravel from entering the packing box.
5. Circular Channel Design: The fully circular channel and blade-shaped bottom enhance smoothness and sealing performance.

3. Main Component Materials

• Body: Stainless steel
• Cover: Stainless steel
• Gate Plate: Stainless steel
• Stem: Stainless steel
• Sealing Ring: Rubber, PTFE, stainless steel, or hard alloy
• Manufacturing Standard: VTON

4. Technical Parameters

• Nominal Pressure: PN0.6-2.5MPa
• Shell Test Pressure: 1.5xPN
• Sealing Test Pressure: 1.1xPN
• Working Temperature:
  • Rubber ≤80℃
  • PTFE Seal ≤180℃
  • Hard Seal ≤425℃
• Applicable Media: Syrup, pulp, sewage, coal slurry, ash-water mixtures
• Drive Modes: Manual, pneumatic, electric
• Nominal Diameter: DN3-1000mm
• Protection Level: IP65, IP67, IP68

5. Dimensions

Knife Gate Valve最先出现在USA VTON GROUP。

The forged steel high-pressure gate valve, also known as an integral forged gate valve, is designed to meet the demands of high-pressure systems. Manufactured according to API602 standards, the valve body and cover are forged as a single piece, ensuring superior strength and reliability. These valves are widely used in petrochemical plants, power stations, and chemical equipment pipelines.

Applications:

• Suitable for water, oil, gas, and corrosive media pipelines
• Commonly used in petrochemical, power generation, and chemical processing industries

2. Product Features

1. Compact Design: Features a space-saving structure with a reduced diameter flow channel for efficient performance.
2. Durable Sealing: Alloy steel or hard alloy sealing surfaces ensure long service life and reliable performance.
3. Rigid Wedge Gate: The single rigid wedge gate design enhances stability and sealing reliability.
4. Corrosion Resistance: Valve stem treated with nitrogen for excellent corrosion and friction resistance.
5. Flexible Operation: Equipped with flexible graphite packing, providing reliable sealing and low torque for easy operation.
6. Versatile Connections: Available in socket welding, butt welding, and threaded connections to accommodate various piping standards.

3. Technical Parameters

• Nominal Diameter (DN): 10 ~ 50mm
• Connection Types: Welded, flange, threaded
• Working Pressure (MPa): 1.6 ~ 42
• Working Media: Water, oil, gas, acetic acid, nitric acid, and other media
• Body Material: A105, LF2, F11, F5, F304, F304L, F321, F316, F347, F316L
• Disc Material: A105, LF2, F11, F5, F304, F304L, F321, F316, F347, F316L
• Stem Material: A105, LF2, F11, F5, F304, F304L, F321, F316, F347, F316L
• Sealing Surface: Stainless steel, Stellite alloy

Forged Steel High-Pressure Gate Valve最先出现在USA VTON GROUP。

The soft sealing gate valve, also known as the cast iron elastic seat sealing gate valve, features a cast iron body and a gate plate fully encapsulated with high-quality rubber. The rubber’s elasticity and deformation ensure a secure seal, achieving zero leakage. These valves are widely used in water supply, sewage systems, and industrial pipelines.

2. Technical Parameters

• Nominal Diameter (DN): 10 ~ 1000
• Nominal Pressure (MPa): 0.6 ~ 6.4
• Body Material: Cast iron
• Standards: GB (China), ANSI (USA), DIN (Germany), JIS (Japan)
• Working Media: Water, clean water, sewage
• Applications: Municipal water networks, residential areas, landscaping, petroleum, power plants, environmental protection
• Operating Temperature (℃): -20 ~ 120
• Manufacturing Standard: VTON

3. Product Features

1. Flat-bottom design: Eliminates grooves in the valve cavity, preventing debris accumulation and ensuring smooth fluid flow.
2. Rubber encapsulation: The gate plate is fully covered with high-quality rubber, ensuring durability, precise dimensions, and excellent elastic memory.
3. Corrosion resistance: Components like the valve stem, stem nut, and sealing sleeve are made of corrosion-resistant materials such as stainless steel and copper. The valve body is coated with epoxy resin, meeting standards for potable water.
4. Reliable sealing: Equipped with three “O-ring” seals for effortless operation and long-lasting, maintenance-free performance.
5. Pressure-sealed O-ring replacement: Allows for easy replacement of the O-ring without shutting off water supply.
6. Embedded brass nut: The brass nut is securely embedded into the gate plate, preventing loosening or detachment.
7. Precision casting: The valve body is precision-cast to ensure internal sealing without additional machining.

Soft Sealing Gate Valve最先出现在USA VTON GROUP。

Stainless steel gate valves are designed to control the flow of media by raising or lowering a gate perpendicular to the flow direction. These valves are used for full open or full close operations and are not suitable for throttling. Key features include low fluid resistance, minimal pressure drop, and excellent sealing performance.

Applications:

• Ideal for weakly corrosive media pipelines, such as nitric acid and steam systems
• Widely used in petroleum, chemical, power plants, and other industries for oil, steam, and water pipeline control
• Suitable for fire protection systems with recommended use of rising stem design for easy visibility of valve status

2. Product Features

1. Made from austenitic stainless steel, offering excellent corrosion resistance against oxidizing acids.
2. Media flow remains undisturbed, ensuring low fluid resistance and minimal pressure drop.
3. Gate movement is perpendicular to the media flow, requiring minimal torque for operation and reducing effort.
4. Bidirectional flow capability allows media to flow in either direction without affecting performance, making it ideal for pipelines with potential flow direction changes.
5. Compact design with shorter structural length due to the vertical gate position.
6. Exceptional sealing performance, with minimal erosion on the sealing surface when fully open.

3. Technical Specifications

• Size: DN15 ~ DN800
• Pressure: 1.6MPa ~ 20.0MPa
• Temperature: ≤200℃
• Body Material: Stainless steel, cast steel
• Sealing Surface: PTFE, stainless steel + hard alloy, or hard alloy overlay
• Connection Type: Flange, threaded, welded
• Working Media: Weakly corrosive media, steam, water, and oil

Stainless Steel Gate Valve最先出现在USA VTON GROUP。