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Series D Flexgate Knife Gate Valve

Brand: Red Valve Company, Inc
Does not ship to Virginia, United States
Red Valve's Series D Flexgate Valve is designed with a cast iron body or fabricated steel body, stainless steel gate and two heavy-duty elastomer cartridge slurry seats. The port is formed by two heavy-duty cartridge elastomer slurry seat halves. The cartridge slurry seats are available in various elastomers for chemical compatibility and abrasion resistance. A flush area at the valve's base provides a clean-out port. The Flexgate Valve provides bi-directional shut off. A heavy-duty topworks is standard.

The relatively simple design eliminates expensive overhauls, unscheduled shutdowns and costly replacement parts. The only replacement parts are the slurry sleeves and the packing. 

Flexgate Valves of 3"-12" are provided with standard handwheel mechanisms featuring cast handwheels, machined 303 Stainless Steel stems with yoke sleeves and thrust washers designed to reduce operating torque. It is recommended that Manual Flexgate Valves 12" and larger be specified with a 4:1 bevel gear actuator. The 4:1 bevel gear actuator is available to reduce rim pull and operate the valve. Pneumatic actuators are also available and allow the Flexgate to provide long-term abrasion resistance under high cycle conditions.

The valve self cleans each time it is cycled, making it ideal for automated plants. Red Valve manufactures its actuators using black Amalgon, a fiberglass reinforced epoxy resin. The actuator material is inert to most corrosive chemicals, hydraulic fluids, water and oil. 

It has an operating temperature range from -90° to 225° F, and can withstand maximum working pressures of 250 psi. Inside actuator walls are polished and impregnated with a molydisulfide for reduced friction and wear. The piston seal is a long-lasting O ring. The piston rod is sealed with a lip seal, which is protected by a rod wiper ring. This wiper ring prevents dirt from being dragged though the seal.

Flexgate Valves are also available with hydraulic or electric actuators. Other options include limit switches, solenoids, air regulators and chainwheels.
Features
  • Ideal for difficult abrasive slurry service
  • Replaceable elastomer cartridge seats
  • Heavy-duty, 150 psi Stainless Steel gate
  • Bi-directional, drop-tight shut off
Red Valve's Series D Flexgate Valve is designed with a cast iron body or fabricated steel body, stainless steel gate and two heavy-duty elastomer cartridge slurry seats. The port is formed by two heavy-duty cartridge elastomer slurry seat halves. The cartridge slurry seats are available in various elastomers for chemical compatibility and abrasion resistance. A flush area at the valve's base provides a clean-out port. The Flexgate Valve provides bi-directional shut off. A heavy-duty topworks is standard.

The relatively simple design eliminates expensive overhauls, unscheduled shutdowns and costly replacement parts. The only replacement parts are the slurry sleeves and the packing. 

Flexgate Valves of 3"-12" are provided with standard handwheel mechanisms featuring cast handwheels, machined 303 Stainless Steel stems with yoke sleeves and thrust washers designed to reduce operating torque. It is recommended that Manual Flexgate Valves 12" and larger be specified with a 4:1 bevel gear actuator. The 4:1 bevel gear actuator is available to reduce rim pull and operate the valve. Pneumatic actuators are also available and allow the Flexgate to provide long-term abrasion resistance under high cycle conditions.

The valve self cleans each time it is cycled, making it ideal for automated plants. Red Valve manufactures its actuators using black Amalgon, a fiberglass reinforced epoxy resin. The actuator material is inert to most corrosive chemicals, hydraulic fluids, water and oil. 

It has an operating temperature range from -90° to 225° F, and can withstand maximum working pressures of 250 psi. Inside actuator walls are polished and impregnated with a molydisulfide for reduced friction and wear. The piston seal is a long-lasting O ring. The piston rod is sealed with a lip seal, which is protected by a rod wiper ring. This wiper ring prevents dirt from being dragged though the seal.

Flexgate Valves are also available with hydraulic or electric actuators. Other options include limit switches, solenoids, air regulators and chainwheels.
Features
  • Ideal for difficult abrasive slurry service
  • Replaceable elastomer cartridge seats
  • Heavy-duty, 150 psi Stainless Steel gate
  • Bi-directional, drop-tight shut off

Specifications

Body Material

  • Cast Iron
  • Fabricated Steel
  • Optional 304 Stainless Steel or 316 Stainless Steel

Sleeve Material

  • Pure Gum Rubber, Neoprene, Hypalon, Chlorobutyl, Buna-N, EPDM and Viton

Valve Size

  • 3” to 42”

Drilled and Tapped Flange

  • ANSI 150#
  • ANSI 300#
  • ANSI B16.1 125# Cast Flange
  • AWWA C110 125# Cast Flange
  • EN 1092 PN 6, 10 & 16
  • JIS 5K, 10K

Actuator

  • Manual
  • Electric
  • Pneuamtic
  • Hydraulic

Material of Construction

  • Gate: ASTM A240 T-316
  • Gate: 17-4 Ph, Hastelloy C, or Teflon-Coated 316 Stainless Steel
  • Seats: Natural Rubber, EPDM, Buna-N, SBR, Fluoroelastomer, Neoprene
  • Gate Coating: Fluoroelastomer Polymers

Operating Pressure

  • 25 to 150 psi

Applications

  • Slurry Applications