Durable wafer type butterfly valve in NPS 1.5 to 24 (DN 40 to 600). Compact design, reliable sealing and easy installation for industrial piping.
Reliable sealing: Centerline structure+elastic soft sealing surface, fully fitting when closed, achieving zero/micro leakage, compatible with cleaning media;
Extremely low flow resistance: When the butterfly plate is fully opened, it is approximately straight through the pipe, with low pressure loss and significant energy-saving effect;
Lightweight opening and closing: The valve stem is centered without eccentricity, with low rotational resistance, making manual/automatic operation effortless;
Compact structure: Clamp on installation does not require flange gaskets, with small size and light weight, saving installation space and cost;
Convenient maintenance: With fewer components and simple disassembly and assembly, the soft seal seat can be replaced separately, reducing maintenance costs;
Wide adaptability: resistant to various cleaning media such as weak acids and bases, water, air, oil, etc., with temperature and pressure coverage under normal working conditions.
Size Range
NPS 1.5 to 24 / DN 40 to 600
Body Materials
Cast Iron, Ductile Iron, Carbon Steel WCB, Stainless Stee
Maximum Allowable Operating Pressure
150 psi (10 Bar) of 232 psi (16 Bar) ASNI CLASS 150
Stem Materials
316 Stainless Steel
Temperature Range
-22°F to 320°F (-30°C to 180°C)
Seat Materials
EPDM, BUNA-N, PTFE(EPDM), Viton, Silicone, Neoprene, EPT
Face To Face
ASME B16.10, Manufacturer Standard
Disc Materials
Stainless Steel, Alum Bronze, Ductile Iron Covered Nylon, Stainless Steel Covered F46
Shutoff Rating
Zero Leakage
Face To Face
ISO05752, DIN3202
Body Style
Wafer
Testing Standard
MSS SP-61, API 598, EN 12266-1
Flange Drilling
ASME B16.1 Class 125, ASME B16.5 Class 150, ASME B16.47
Actuators
Pneumatic or electric
Certifications
ABS, ATEX, DNV, PED, SIL
Applications
Wastewater, Seawater, Water, other liquids and gases
Features & Benefits
Core reason
The compression fit of the midline structure and elastic soft sealing surface (such as EPDM, PTFE) - the valve stem is centered to rotate the butterfly plate without eccentricity. When closed, the soft sealing surface is compressed by the medium pressure or the force of the actuator, forming a comprehensive and tight sealing contact with the valve seat, offsetting small errors, and achieving zero/micro leakage.
Core applicable media
Clean and particle free fluids such as water, seawater, air, natural gas, oil products (without particles), weak acid-base solutions (pH 4-10), etc. Key adaptation logic: Soft sealing materials (EPDM/PTFE, etc.) determine medium compatibility - EPDM is resistant to water, weak acids and weak bases, PTFE is resistant to strong acids and bases but not high temperatures, avoiding media containing hard particles (which can scratch the sealing surface) and strong oxidants (such as concentrated nitric acid).
Seat
The core advantages of the soft sealed center line clamp butterfly valve seat are reliable sealing (elastic fit without gaps), strong installation adaptability (clamp type does not require flange positioning), corrosion and wear resistance (compatible with high-quality soft materials such as EPDM/PTFE), and integrated structure (anti detachment), with low opening and closing friction (extending sealing life).
Stem
The valve stem is easy to disassemble and maintain (without the need to disassemble the valve as a whole), with higher sealing reliability (to avoid leakage at the valve stem through the shaft), high machining and assembly accuracy, suitable for large-diameter valves, and reduces the risk of deformation of long valve stems.
Actuators
pneumatic actuator or electric actuator
Controls
limit switch box, solenoid valve, Air filter pressure reducing valve, valve positioner
SIMMEL can provide you with customized valves solutions.
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