EVS DN125 PN16 Butterfly Valve Body AC42100 Aluminium Alloy
Made from AlSi7Mg0.3 casting alloy, it offers excellent fluidity and high air-tightness. After T6 heat treatment, its tensile strength exceeds 290 MPa, perfectly balancing lightweight requirements with structural integrity.
Material:
1.4308/1.4408/1.4469/1.4470/1.4588/C276 and more
Dimension:
DN25 – DN400
Pressure:
PN3-PN25
Casting:
Investment Casting
Certificate:
PED
Approval by Lloyd's Register Classification of China
Descriptions
Parametric
Specificities
Details
Case
Wafer Butterfly Valve Body
EN AC-42100 Premium Aluminium Alloy
Made from AlSi7Mg0.3 casting alloy, it offers excellent fluidity and high air-tightness. After T6 heat treatment, its tensile strength exceeds 290 MPa, perfectly balancing lightweight requirements with structural integrity.
Significant Weight Reduction
With a density of only approx. 2.68 g/cm³, the valve body weighs just 1/3 to 1/2.5 of a comparable ductile iron casting. This drastically reduces the load on the piping system and lowers labor intensity during installation.
Superior Corrosion Resistance
A dense natural oxide film forms on the surface, providing better resistance to freshwater, salt spray, and humid atmospheres compared to carbon steel or cast iron. Ideal for outdoor and water treatment applications.
Precision Casting & CNC Machining
The flow channel and sealing surfaces are finished with CNC machining to ensure a smooth bore and high mating accuracy. This minimizes flow resistance and guarantees perfect compatibility with EPDM, NBR, or PTFE valve seats.
Standardized Top Actuator Flange
Features a 4-bolt evenly distributed flange pattern that matches standard valve stems and actuators. This ensures precise positioning, secure assembly, and easy drive integration.
Versatile Application Range
Widely used in municipal water treatment, HVAC, compressed air systems, marine freshwater lines, and food & pharmaceutical industries (when paired with hygienic liners) for low to medium-pressure pipelines.
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Made from AlSi7Mg0.3 casting alloy, it offers excellent fluidity and high air-tightness. After T6 heat treatment, its tensile strength exceeds 290 MPa, perfectly balancing lightweight requirements with structural integrity.
Significant Weight Reduction
With a density of only approx. 2.68 g/cm³, the valve body weighs just 1/3 to 1/2.5 of a comparable ductile iron casting. This drastically reduces the load on the piping system and lowers labor intensity during installation.
Superior Corrosion Resistance
A dense natural oxide film forms on the surface, providing better resistance to freshwater, salt spray, and humid atmospheres compared to carbon steel or cast iron. Ideal for outdoor and water treatment applications.
Precision Casting & CNC Machining
The flow channel and sealing surfaces are finished with CNC machining to ensure a smooth bore and high mating accuracy. This minimizes flow resistance and guarantees perfect compatibility with EPDM, NBR, or PTFE valve seats.
Standardized Top Actuator Flange
Features a 4-bolt evenly distributed flange pattern that matches standard valve stems and actuators. This ensures precise positioning, secure assembly, and easy drive integration.
Versatile Application Range
Widely used in municipal water treatment, HVAC, compressed air systems, marine freshwater lines, and food & pharmaceutical industries (when paired with hygienic liners) for low to medium-pressure pipelines.
20
+
Year/Experiences
245
+
Employees
Product Parameters
| Manufacture Process: | Investment casting |
| Heat Treatment: | Solution annealing |
| Maximum Part Size: | 500mm |
| Minimum part size: | 25mm |
| Certificate: | PED |
| Material Standard: | EN10213/EN10088-1/ASTM A351/A351M and more |
Product Features
Customer customization
We can develop patterns and produce corresponding products according to customer requirements.
Product accuracy
Machining is carried out through CNC lathes and machining centers to ensure good product accuracy.
Casting dimensions
Investment casting ensures good dimensional accuracy and surface finish of the castings.
Stability
With a monthly production capacity of over 80,000 valve disks, we guarantee product quality and timely delivery.
Professionalism
Having been engaged in the valve field for more than 15 years, we can help customers complete the production of various products.
Certification
Approval by Lloyd's Register Classification of China, our products can be used in the marine industry.
Product Parameters
On The Basis Of Deepening Co-Operation With Existing Customers, We Continue To Develop New Customers In The Market And Provide Customers
Material Composition
Our EVS DN125 PN16 wafer butterfly valve bodies are manufactured from high-grade EN AC-42100 aluminium alloy (AlSi7Mg0.3), equivalent to A356.2 / ZL101A / AC4C. The material delivers excellent castability, high strength-to-weight ratio, and natural oxide-layer corrosion resistance for water, air, and mild industrial media. T6 heat treatment is available to enhance mechanical performance for demanding PN16 applications.
1
Dimensional Specifications
Standard DN125 (PN16) dimensions compliant with ANSI, DIN, ISO, and EN flange / face-to-face standards. Fully customizable geometries, wall thicknesses, and flange drillings are supported against customer drawings or samples. Permanent casting marks (DN, PN, AC42100, heat/batch No.) provide clear on-site identification and full traceability.
3
Certifications And Approvals
Material Test Report (MTR / EN 10204 3.1) and chemical / mechanical test data are available on request. Each casting carries heat/batch number 2605 for full traceability. Products are subject to dimensional inspection, pressure testing, and third-party verification to meet industrial valve quality requirements.
5
Design And Construction
Concentric wafer-type body with an integral top actuator mounting flange (4-bolt pattern) for secure valve-stem / drive connection. Precision-machined flow-way and sealing seats ensure stable centering, low-torque operation, and reliable bubble-tight shut-off. The compact sandwich design fits between standard pipeline flanges, reducing overall system weight and installation footprint.
2
Surface Finishing
CNC-machined and cleaned flow passages with a smooth, uniform surface to minimize flow resistance and media adhesion. Natural aluminium finish as standard; mirror-polish, passivation, or fine sandblasting are available upon request. Machined sealing faces hold tight tolerances for consistent gasket/disc mating and extended service life.
4
Customization And Modifications
OEM and drawing-based customization welcomed. We can adjust alloy temper (incl. T6), wall thickness, top-flange drilling, lug/bolt-hole pattern, and surface treatment (anodizing, painting, sandblast, polish) to suit your application. Prototyping and batch production supported for DN125 PN16 aluminium butterfly valve bodies and related cast assemblies.
6
Product Cases
We supply high‑quality cast valve bodies and valve discs for global valve manufacturers, supporting OEM & drawing customization.
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