PRODUCTS
PRODUCTS
BUTTERFLY VALVE
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BUTTERFLY VALVE
DOUBLE ECCENTRIC RTFE SEAT BUTTERFLY VALVE
( High performance type BUTTERFLY VALVE )
Structural features – Double Eccentric
Double Eccentric
 The center of the valve disc is eccentric twice from the valve body and stem, so that the disc quickly separates from/comes into contact with the seat when opening and closing, minimizing friction.
Metal seat /soft seat applicable
 Applicable to various sealing structures → Responsive to high temperature, low temperature, and corrosive fluids.
Excellent sealing performance
 A structure in which the disc is pressed against the seat when the valve is closed due to the eccentric structure.
Product Information
VALVE SEAT
Use of RTFE (Reinforced PTFE, reinforced Teflon) - Main SEAT material
Fiberglass, etc. are mixed into PTFE to enhance mechanical strength and chemical resistance.
Soft sealing power + excellent resistance to high temperatures/chemical fluids.
Can be manufactured in Fire Safety Type (Metal + RTFE _ API 607)
In addition, RUBBER TYPE, CARGO TYPE, and metal seat are available.
Key Features
Item
Explanation
RATING
JIS B 2210 ( 5K, 10K, 16K, 20K, 30K), ASME B 16.5 & 16.47 ( CLASS 150, 300, 600 ), EN 1092-1 ( PN06, PN10, PN16, PN25, PN40 ), AWWA C 207 등
Temperature range
Approximately -50°C to 200°C (depending on the type of RTFE)
Corrosion resistance
Very good (can also be used with chemicals, acids, bases, etc.)
Areas of application
Chemical plants, water purification/wastewater treatment, power plants, seawater treatment, pharmaceuticals, etc.
Installation direction
Both vertical and horizontal possible
Actuator
Levers, gears, or electric, pneumatic, or hydraulic actuators, etc.
Size
DN 40 ~ 2000
Connection Method
WAFER
LUG
FLANGE
SEMI LUG
Pros
Reduced friction → Extended lifespan
When opening and closing, the disc and seat are immediately separated, reducing friction → improving seat durability.
Excellent sealing performance
Double eccentricity ensures that the disc is in close contact with the seat only when closed → High leakage prevention performance
Wide applicability
Applicable to various fluids such as cold and hot water, seawater, steam, gas, and petrochemical processes.
Cost-effective for medium and large diameters
More economical and easier to maintain than ball valves and gate valves for the same purpose