knife gates

going through knife gate

The Montagnoli Going Through Knife Gate Valves have been specially designed for a wide range of heavy-duty, abrasive, and corrosive applications, delivering long-term reliability and performance.

The Montagnoli Going Through Knife Gate Valves feature a bidirectional operation and are ideal for applications in aggressive environments and with the presence of acids, providing uncompromising 100% sealing integrity.

The knife design incorporates a circular opening in the valve’s nominal diameter, ensuring a safe and reliable shut-off even in highly concentrated and viscous fluids such as pulp (pulp concentration <18%), liquors, tailings, powders, ashes, and sludge.

As a standard feature, the Going Through Knife Gate Valves are equipped with a Reject Box, responsible for cleaning the actuation knife by removing any objects and particles that could obstruct the valve’s operation. This ensures long-term functionality and prevents blockages.

The standard face-to-face dimensions comply with MSS-SP-81, and the body fixing holes follow the ANSI 16.5 Class 150 or NBR 7675 PN10 standards.

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APPLICATIONS:

  • Aluminium
  • Sand and Gravel
  • Mineral Sands
  • Sodium
  • Carbonate
  • Coal
  • Cement
  • Fertilizers
  • Phosphates
  • Mining
  • Pulp and Paper
  • Power Generation Units

CONSTRUCTION MATERIALS:

BODY:

By default, the bodies of the Going Through Knife Gate Valves are available in:

  • AISI 304 Stainless Steel (CF8, Max +120°C / +248°F)
  • Ductile Iron GGG50 (Max +120°C / +248°F) However, they can also be supplied in high-alloy materials such as Duplex and 254 SMO, or other materials as per customer request.

KNIFE:

The knives are available in the following materials:

  • AISI 304 Stainless Steel (CF8)
  • AISI 316L Stainless Steel (CF3M)
  • AISI 904L Stainless Steel (CF2M)
  • Duplex Stainless Steel EN 1.4470
  • 254 SMO Stainless Steel

ACTUATION:

The available actuation systems for the Going Through Knife Gate Valves are:

  • Manual
  • Manual with Gearbox
  • Pneumatic
  • Electric
  • Engineered solutions

ACCESSORIES:

  • Limit switch, electromechanical with reversible contacts (15A/250V AC), inductive (15-30V DC), capacitive (10-30V DC)
  • Solenoid Valves 3/2, 4/2, and 5/2 way (24V DC)
  • Electropneumatic Positioner, IEC 60529 IP65 (4-20mA DC)
  • Position locks (Lock in Place)
  • Purge ports
  • Extension rods
  • T-handle actuator head
  • Engineered solutions

MAIN DIMENSIONS MANUAL ACTUATION:

MAIN DIMENSIONS PNEUMATIC ACTUATION:

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