Description
Knife gate valve Cast Iron Body to *4"
Fabricated Steel Body over *4"
Optional **4SS or **6SS body
Gate ASTM A**0 T***6
Optional ***4 pH, Hastelloy C, or Teflon coated **6 SS
ANSI Class **5/**0#
Slurry sleeves: Pure Gum Rubber, Buna-N, EPDM, and Viton.
Description
Knife gate valve Red Valve's 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 shutoff. 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"**2" are provided with standard handwheel mechanisms
featuring cast handwheels, machined **3 stainless steel stems with
yoke sleeves, and thrust washers designed to reduce operating
torque. It is recommended that Manual Flexgate Valves *2" 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 Knife gate 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
**0° To **5° F, and can withstand maximum working pressures of
**0 psi. Inside actuator walls are polished and impregnated with a
moly-disulfide 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.
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