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Válvulas borboleta

  • Lugged Fully PTFE-Lined Butterfly Valve
    Válvula borboleta com olhal totalmente revestida de PTFE
    Tamanho: 6" (DN150)
    Classificação de pressão: 150 LB (ASME B16.5)
    Materiais principais:
    Corpo: ASTM A395 (Ferro Dúctil)
    Disco: ASTM A351 CF8M (Aço Inoxidável 316) com Revestimento PTFE
    Haste: Aço inoxidável AISI 316
    Assento: PTFE reforçado (politetrafluoroetileno)
    Operação: Acionada por alavanca
    Conexão final: roscada com olhal (em conformidade com ASME B16.5)
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  • Replaceable Cartridge Seat Wafer Butterfly Valve
    Válvula borboleta tipo wafer com assento de cartucho substituível
    A FOTO MOSTRA AS ESPECIFICAÇÕES ABAIXO
    TAMANHO: 2,5″
    CLASSIFICAÇÃO: 125LB
    CORPO: FERRO DÚCTIL ASTM A536
    DISCO: ASTM A536 FERRO DÚCTIL 65-45-12
    HASTE: SS416 SEM PINO
    ASSENTO: EPDM
    ACIONAMENTO: ALAVANCA
    Ver detalhes
  • High Performance Stainless Steel Butterfly Valve
    High Performance Stainless Steel Butterfly Valve
    Design & Manufacturing API 609, ISO 17292, ASME B16.34, EN 593
    Pressure-Temperature Ratings ASME B16.34 or EN 12516
    Inspection & Testing API 598, ISO 5208, EN 12266
    End Connections (Wafer/Lug) ASME B16.5 / B16.47; Double Flanged: ASME B16.5 (short pattern)
    Face-to-Face Dimensions API 609 Table 2 (or ISO 5752 Short Pattern)
    Fire-Safe API 607 / API 6FA
    Sour Service Materials NACE MR0175 / ISO 15156
    Fugitive Emissions ISO 15848-1 or TA-Luft
    Top Flange / Actuator Mounting ISO 5211
    Ver detalhes
  • Motorized Triple offset Double Flange Butterfly Valve
    Motorized Triple offset Double Flange Butterfly Valve
    Valve Type Triple Offset Butterfly Valve
    Nominal Size DN200 (8 Inch) or as specified
    Pressure Rating Class 150 (PN20) or Class 300 / PN optional
    End Connection Double Flange (to ASME B16.5 or EN 1092-1)
    Operation Motorized Actuator
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  • 3“ 150LB PFA Fully Internal Lined Butterfly Valves
    3“ 150LB PFA Fully Internal Lined Butterfly Valves
    Nominal Size 3″ (DN80)
    Pressure Class Class 150LB (PN10/PN16)
    Valve Type Concentric / Resilient Seated Butterfly Valve
    Structure Fully Internal Lined
    Connection Type Wafer or Lug
    Design Standard API 609, MSS SP-67, ISO 5752
    Face-to-Face API 609 Table 2 / ISO 5752 Series 20
    Flange Standard ASME B16.5 Class 150
    Testing Standard API 598 / ISO 5208 Rate A
    Operation Lever / Gearbox / Pneumatic / Electric
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  • Triple Offset Butterfly Valve – High Temperature / High Pressure
    Triple Offset Butterfly Valve – High Temperature / High Pressure
    Pressure Rating Class 600LB (PN100)
    Design Standard API 609 (Category B), ASME B16.34, BS EN 593
    Face-to-Face Dimensions API 609 / ASME B16.10 / ISO 5752 Series 13 & 20
    Flange Connection ASME B16.5 (RF or RTJ)
    End Connections Double flanged (long pattern)
    Top Flange ISO 5211
    Ver detalhes
  • Hydraulic Actuated Concentric Butterfly Valve
    Hydraulic Actuated Concentric Butterfly Valve
    Connection Type Wafer-type / flangeless design for installation between flanges
    Flow Direction Bi-directional
    Disc Design Concentric disc rotates on central axis, minimizing pressure drop and turbulence
    Sealing Elastomer seat provides bubble-tight shut-off (zero leakage) and compensates for minor disc misalignment
    Stem Design Anti-blowout square-driven stem with lower thrust bearing to reduce friction and prevent galling
    Actuator Mounting ISO 5211 compliant top flange for direct actuator mounting
    Maintenance Compact, lightweight design with reduced maintenance requirements
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  • Economy Pattern Concentric Butterfly Valve
    Economy Pattern Concentric Butterfly Valve
    Connection Type Wafer type (flangeless) for mounting between standard flanges
    Flow Direction Bi directional
    Disc Design Concentric disc with central stem, reducing turbulence and pressure drop
    Sealing One piece moulded EPDM seat provides drop tight shut off (zero leakage) and compensates for minor disc misalignment
    Stem Design Anti blowout stem with square drive top; lower stem bearing reduces friction and wear
    Actuator Mounting ISO 5211 top flange for direct mounting of manual levers, gear operators, or actuators
    Maintenance Simple, low maintenance design with field replaceable seat
    Ver detalhes
  • 60″ Class 150 Extended Bonnet Buried Double Offset Rubber Seated Butterfly Valve
    60″ Class 150 Extended Bonnet Buried Double Offset Rubber Seated Butterfly Valve
    • Valve Design: API 609 Category B (Double Flanged, Double Offset)
    • Pressure/Temperature Rating: ASME B16.34 Class 150
    • Flange Drilling: ASME B16.47 Series A (MSS SP-44) / ASME B16.5 compatible
    • Face-to-Face: Manufacturer’s standard for buried service, based on API 609
    • Testing & Inspection: API 598 (Zero Leakage)
    • Buried Service Extension: Designed per AWWA M44
    Ver detalhes

A butterfly valve is a type of quarter-turn valve used to regulate, isolate, or start and stop fluid flow in a piping system. It consists of a circular disc or plate mounted on a rotating shaft. When the handle or actuator turns the shaft 90 degrees, the disc moves from a fully closed to a fully open position, allowing flow through the valve. The disc remains in the flow path even when open, which means there is always a slight pressure drop. Butterfly valves are known for their compact design, fast operation, and cost-effectiveness, especially in large-diameter pipelines. They come in various types, such as wafer, lug, and double or triple offset styles, depending on the pressure and sealing requirements. These valves are widely used in industries such as water treatment, HVAC, chemical processing, oil and gas, and food and beverage, due to their reliability, low maintenance, and easy installation.

What Are The Advantages Of Using Butterfly Valves Over Other Valve Types?

Butterfly valves offer several advantages that make them a preferred choice in many industrial and commercial applications. First, their lightweight and compact structure requires less space and support compared to gate or globe valves, which is especially beneficial for high-diameter pipelines. They provide quick shutoff and throttling capabilities with just a quarter-turn, resulting in faster and easier operation, whether manual or automated. Butterfly valves are generally more cost-effective in both initial investment and maintenance, as they have fewer moving parts and simple construction. Additionally, they can handle a wide range of fluids, including gases, liquids, and slurries. With advancements in sealing technologies, modern butterfly valves can achieve tight shutoff, even in high-pressure and high-temperature systems. Their versatility in materials—such as stainless steel, cast iron, and PVC—makes them suitable for corrosive or sanitary environments, depending on the application needs.

Butterfly Valves FAQ

  • 1.Are butterfly valves suitable for high-pressure systems?

    Yes, triple offset butterfly valves are designed for high-pressure and high-temperature conditions.

  • 2.Can butterfly valves be used for throttling?

    Yes, they are often used for throttling and flow regulation.

  • 3.What materials are butterfly valves made from?

    Common materials include stainless steel, cast iron, ductile iron, PVC, and carbon steel.

  • 4.Are butterfly valves bidirectional?

    Most butterfly valves are bidirectional, but performance may vary by type and design.

  • 5.How long do butterfly valves last?

    With proper material selection and maintenance, they can last many years in industrial use.

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