Butterfly valves 23000 and MAK series
Butterfly valves are designed for use as on-off or control valves on pipelines of enterprises of various industries. They can be used with any liquid or gaseous fluids that are neutral to the materials of the wet parts.
Technical specifications
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Nominal diameter DN 80 to 2400 mm
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Nominal pressure PN 1,6 to 25 MPa
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Type of construction triple offset disc seal
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Operating temperature - 196 to 600 °С
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Seat tightness IV, V, VI classes according to GOST 9544. Class А according to GOST 9544.
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Material of the body carbon steel, cold-resistant steel, heat-resistant steel, stainless steel, corrosion-resistant alloys
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Seat ring material laminated seat ring (metal+graphite)
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Packing material graphite
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Connection flanged / welded
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Actuator pneumatic piston / electric / manual
Execution options
With a steam jacket heating
To maintain the temperature of the working medium inside the valve. The steam jacket ensures uniform heating of the body, preventing thickening or crystallization of viscous or temperature-sensitive fluids, and also reduces the risk of condensate formation. It is used in systems with high medium viscosity or in low-temperature environments.
With an extension bonnet for high-temperature or cryogenic media
Extension bonnet provides effective thermal insulation for the packing gland assembly. Heat from the process fluid is not transferred to the actuator and seals, ensuring that the temperature in the gland area does not exceed 100 °C. This design guarantees reliable valve operation in both high-temperature and cryogenic conditions, maintaining tightness, control accuracy, and a long service life for the Carbon/PTFE packing.
With steam purging of the sealing area of the seat
This prevents condensate and contaminant deposition, ensuring reliable sealing and stable valve operation at high temperatures and humidity of the medium.
With extension for underground installation
Enables valve installation below ground level while maintaining convenient access for control and maintenance.
In accordance with the requirements of the NACE MR 0103/01-75 standard for media containing hydrogen sulfide
Клапан изготовлен с материалами и конструкцией, устойчивыми к коррозии, вызванной сероводородом. Обеспечивает долговечность и надежную работу в агрессивных средах, где возможна селективная или общий коррозионный износ, соответствуя требованиям стандарта NACE MR 0103/01-75 для нефтегазовой и химической промышленности.
With adaptation to an aggressive environment containing corrosive gases or acid vapors, as well as the marine atmosphere
The valve is constructed with materials and protective coatings that ensure resistance to corrosion and durability when operating in aggressive industrial and coastal environments. It ensures dependable operation in environments containing acidic or corrosive gases and high marine air humidity.
Features
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Triple offset trim designThe triple offset design ensures uniform distribution of specific pressure by entire sealing surface, requiring minimum torque
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Bidirectional supply of working fluidAllows to connect pipelines from either side of the valve without changing the flow direction, providing versatility of installation and flexibility of the system.
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Solid shaft designIt provides increased strength and reliability of torque transmission from the actuator to the disc, reducing the risk of failure at high pressures and intensive operation.