Overview and Purpose

The document presents a detailed technical catalog for the 39&-8 butterfly valve, model 352)/2:3, designed for high-performance industrial applications involving flow regulation and shut-off. It emphasizes the valve's suitability for precise flow control, high flow rates, and reduced pressure drops, making it ideal for demanding industrial environments.

Valve Description and Functional Characteristics

• Type: Butterfly valve with a unique design allowing greater flow rates and lower pressure drops compared to traditional globe valves.
• Flow Control: Provides linear response and excellent flow regulation.
• Disc Design: Features a quarter-turn disc that ensures tight shut-off and minimal leakage.
• Sealing: Utilizes EPDM or FKM seals for reliable sealing performance.
• Standards Compliance: Manufactured according to ISO 5211 and other relevant international standards.

Materials and Components

The valve components are made from high-quality materials to ensure durability and performance:

• Handle: ABS plastic
• Spring: Molybdenum steel
• Disc Seal: EPDM or FKM elastomers
• Body: Ductile iron coated with epoxy
• Seals and O-rings: Viton or EPDM depending on application

Operating Conditions and Performance Parameters

• Pressure Ratings: Maximum operating pressure varies by valve size, with typical values ranging from 65 to 200 DN (nominal diameter).
• Temperature Range: Suitable for a wide temperature range depending on seal material (EPDM or FKM).
• Flow Coefficient (Kv): Provided for different valve sizes to assist in flow calculations.
• Leakage Class: Meets tight shut-off requirements per EN standards.

Installation and Maintenance Recommendations

• Installation: Suitable for installation between flanges compliant with EN1092-1, ANSI, or JIS standards.
• Orientation: Can be installed in any position but must ensure proper alignment for optimal sealing.
• Actuation: Compatible with manual, pneumatic, or electric actuators as per ISO 5211 mounting standards.
• Maintenance: Regular inspection recommended to ensure sealing integrity and operational reliability.

Standards and Certifications

• Manufactured in compliance with ISO 5211 for mounting and actuation interfaces.
• Certified according to official listings and certifications for industrial valves.
• Conforms to pressure equipment directives and European standards for safety and performance.

Technical Data and Dimensions

The catalog includes detailed dimensional tables for valve sizes DN 65 to DN 200, specifying parameters such as height (H1, H2, H3), flange dimensions (C1, C2), and weight. Flow coefficients (Kv) and pressure loss data are provided to assist in system design.

Sealing Materials and Codes

Two main sealing materials are offered:

• EPDM: Suitable for water and neutral fluids, with temperature and chemical resistance details.
• FKM (Viton): Suitable for aggressive fluids and higher temperature applications.

Quality and Warranty

The valves are guaranteed to be free from defects in materials and workmanship. The document specifies warranty conditions and encourages users to verify valve integrity before installation.

Additional Notes

• All dimensions and specifications are nominal and subject to change without prior notice.
• Information is provided "as is" based on the revision date and is not legally binding.
• Users must ensure compliance with local regulations and standards when installing and operating the valves.