1. Excellent sealing performance
Zero leakage seal
Through the three-eccentric structure (stem axis offset, body center offset, sealing surface cone angle offset), the butterfly plate and the valve seat form a metal hard seal cone extrusion when closed, supporting ANSI CL 900 (PN160) high pressure conditions, and the leakage rate can reach Class VI.
Frictionless opening and closing
The butterfly plate is separated from the valve seat at the moment of opening, and relies on torque pressure to fit when closing, with no friction contact throughout the process to avoid wear on the sealing surface.
2. High pressure and temperature resistance
Wide pressure range
Adapt to American standard ANSI CL 150 to CL 900 (corresponding to PN10~PN160), meeting the high-pressure pipeline requirements in the fields of petrochemical, power, etc.
Extreme temperature adaptation
The metal seal pair supports extreme conditions from -196℃ (low temperature liquid medium) to 650℃ (high temperature steam/oil and gas), breaking through the temperature limit of traditional butterfly valves.
3. Efficient fluid control
Large flow capacity
Optimize the thickness of the butterfly plate and the flow channel design to reduce fluid resistance. The flow capacity is increased by more than 20% compared with the gate valve of the same specification, reducing pumping energy consumption.
Fast opening and closing response
Only 70-90° rotation is required to complete the full opening/full closing action, and the emergency cut-off time can be shortened by 50% compared with ordinary valves.
4. Long life and low maintenance
Wear resistance and corrosion resistance
Adopt stainless steel + carbide surfacing sealing surface, which can withstand particle erosion and acid and alkali corrosion, and the life span can reach 3-5 times that of conventional butterfly valves.
Adaptive adjustment
Support flow adjustment function, accurately control the medium flow rate by changing the opening, and reduce the impact of frequent opening and closing on the sealing surface.
5. Wide industrial adaptability
Multi-media compatibility
Applicable to water, oil, gas, slurry and other media, especially suitable for harsh scenes such as high-temperature pipelines in refineries and ultra-low temperature storage and transportation of LNG.
Compact structure design
The volume and weight are 30% less than valves of the same specification, which is convenient for installation and maintenance in narrow spaces.
Summary
The American standard three-eccentric butterfly valve, with its multi-layer eccentric seal design and metal hard seal technology, demonstrates high reliability in complex working conditions such as high pressure, high temperature, and strong corrosion. It also has the advantages of fast response and low maintenance cost, and is the preferred control equipment in the fields of petrochemicals, power, etc.