制御弁

  • 概要:下流の流量を設定圧力に調整します。バランスの取れたピストントリム設計。
    サイズ:16インチ
    定格: 600LB
    材質: ASTM A216 WCC 本体とカバー
    ASTM A182 F316トリム
    RPTFEシート
    オペレーター: パイロット 自己制御
  • サンプル仕様
    サイズ:24インチ
    定格:600LB
    ボディとボンネット:ASTM A216 WCC
    プラグ: ASTM A182 F316 +ステライト6
    ステム:ASTM A182 F6A
    ケージ: ASTM A276 416
    シート:ASTM A105+ステライト6
    駆動方式:電動油圧アクチュエータ
  • 写真の仕様は以下のとおりです
    サイズ:42″br> 定格:600LBbr> ボディとボンネット: ASTM A216 WCBbr> ディスク: ASTM A216 WCB+ステライト 6、フレキシブルウェッジ、フルポートbr> ステム: ASTM A182 F6Abr> シート: ASTM A105+ステライト 6br> アクチュエーション: リミトルク SMC-5 480V AC、3PH、60HZ、手動オーバーライド付きbr>
  • サイズ:8インチ×6インチ
    定格: 600LB
    材質: ASTM A216 WCBボディとボンネット
    ASTM A182 F316Lトリム
    RPTFEシート
    操作部: 単動スプリングリターン空気圧
  • 写真の仕様は以下のとおりです
    サイズ:20インチ×16インチ
    定格:300LB 600LB
    ボディとボンネット:ASTM A216 WCB
    ディスク: ASTM A216 WCB+ステライト6、フレキシブルウェッジ
    ステム:ASTM A182 F6A
    シート:ASTM A105+ステライト6
    作動: リミットトルクインテリジェント変調タイプ、4~20mA 信号、480V AC、3PH、60HZ、手動オーバーライド付き。
  • サンプル仕様
    サイズ:8インチ
    定格:300LB
    ボディとボンネット:ASTM A350 LF2
    Vノッチボール:ASTM A182 F316+TCC 90℃ノッチ。
    ステム: ASTM A564 17-4PH
    シート: ASTM A182 F316+TCC
    スプリング:インコネルX-750
    駆動方式:電動油圧アクチュエータ
  • サンプル仕様
    サイズ:2インチ
    定格:600LB
    ボディとボンネット:ASTM A216 WCC
    プラグ: ASTM A182 F316 +ステライト6
    ステム:ASTM A182 F6A
    ケージ: ASTM A276 416
    シート:ASTM A105+ステライト6
    駆動方式:ダイヤフラム空気圧駆動
  • 写真の仕様は以下のとおりです
    サイズ:3インチ
    定格: 10000PSIG
    ボディとボンネット:TC YG6
    プラグ: TC YG20
    ステム:インコネル625
    ケージ:インコネル625
    座席: YG 6
    駆動方式:電動アクチュエータ
  • 簡単な:
    サイズ:3インチ
    評価:2500LB
    材料:
    ASTM A182 F11 ボディとボンネット
    ASTM A182 F11+ステライト6ディスク
    ASTM A182 F6Aステム
    ステライト6オーバーレイボディシート
    オペレーター: ハンドホイール
    終了: ANSI B16.25に準拠したBW
  • Valve Type Electric Modulating Control Valve, Balanced Cage-Guided, Globe Pattern
    Size Range DN25 – DN300 (1″ to 12″)
    Pressure Rating PN16 / PN25 / PN40 / PN64 / PN100 / Class 150 / 300 / 600
    End Connection Flanged (RF / RTJ) per ASME B16.5 or EN 1092-1
    Design Standard IEC 60534-2-1 / ASME B16.34 / DIN EN 1349
    Face to Face Standard IEC 60534-3-1 / ASME B16.10
    Test Standard IEC 60534-4 / ANSI/FCI 70-2
    Service Steam, Water, Oil, Gas, Chemical Fluids
    Temperature Range -196°C to +450°C (Depending on trim and gasket selection)
    Flow Characteristic Equal Percentage (EQ%)
    Action Type Air-to-Close / Air-to-Open (Fail-Safe Position: Specify)
  • Product Name Diaphragm Pneumatic Actuated Control Valve
    Valve Type / Model DN200-PN16-RF (Diaphragm type)
    Nominal Diameter (DN) 200 mm
    Nominal Pressure (PN) PN16 (1.6 MPa / 232 psi)
    Connection Type Flanged
    Flange Face Type RF (Raised Face)
    Applicable Flange Standard GB/T 9119 / HG/T 20592 / ASME B16.5 (or as specified)
  • Product Name Diaphragm Pneumatic Actuated Control Valve
    Valve Type / Model DN100-PN16-RF (Diaphragm type, lined)
    Nominal Diameter (DN) 100 mm
    Nominal Pressure (PN) PN16 (1.6 MPa / 232 psi)
    Connection Type Flanged
    Flange Face Type RF (Raised Face)
    Applicable Flange Standard GB/T 9119 / HG/T 20592 / ASME B16.5 (or as specified)
    Lining Material FEP / PFA / PTFE (fluoroplastic lining) – selected based on media & temperature

A control valve is a critical component in fluid handling systems, used to regulate the flow rate, pressure, temperature, or level of a fluid by varying the size of the flow passage. It operates by receiving signals from a controller, which determines how much the valve should open or close based on input from process sensors. The valve includes an actuator (pneumatic, electric, or hydraulic) that moves the valve stem or plug in response to control signals. This modulation of valve position allows for precise adjustments of fluid parameters within a system. Control valves are essential in automated process control, helping maintain desired operating conditions in industries such as oil and gas, power generation, water treatment, and chemical manufacturing. Depending on the design, they may operate linearly or rotationally and can be equipped with positioners to ensure accurate alignment with control signals. Their flexibility and precision make them indispensable for safe, efficient, and responsive control of complex processes.

What Are The Types Of Control Valves And Their Applications?

Control valves come in several types, each suited for specific functions and applications. The most common types include globe valves, butterfly valves, ball valves, and diaphragm valves. Globe control valves are highly accurate and ideal for precise throttling in applications such as chemical dosing or steam regulation. Butterfly control valves, which offer low-pressure drop and quick operation, are used in HVAC systems and water treatment. Ball valves can be used for both on/off and modulating control, often found in pipeline transport systems due to their durability and tight shut-off capability. Diaphragm valves are suited for corrosive or slurry services where cleanliness and leak prevention are crucial. Depending on system needs, control valves can be linear- or rotary-motion types, and are typically fitted with actuators and smart positioners for enhanced automation. These valves are vital across industries for managing everything from fluid flow in petrochemical refineries to temperature in food processing plants. Choosing the right type depends on the required level of control precision, fluid characteristics, pressure conditions, and response speed.

Control Valves FAQ

  • 1.What is a control valve?

    It’s a valve that regulates flow, pressure, or temperature in a system.

  • 2.Can control valves be automated?

    Yes, most are equipped with actuators and positioners.

  • 3.What fluids can control valves handle?

    They handle gases, liquids, steam, and slurries.

  • 4.Are control valves used in power plants?

    Yes, they are widely used in power and energy industries.

  • 5.What type of actuator is common?

    Pneumatic actuators are most commonly used.

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