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  • Bellows smooth valve moves
    Off-the-shelf electrodeposited-nickel bellows replace costly and stroke-limited custom bellows in gas-turbine fuel-control valves. In-line, microprocessor-controlled valves from Continental Controls Corp. work with PLCs to match fuel flow to turbine rpm and load. Valves use two oil-filled
  • Establishing a new method for determining valve flow coefficient
    The most frequently heard question in the engineering departments of valve manufacturers is, "How much will it flow? " Although details such as process gas, inlet pressure, inlet temperature, and pressure drop are often not included in the question, an acceptable flow rate and/or pressure drop
  • Hydraulic Speed Control
    When using industrial equipment such as automated drill heads, positioning slides, and transfer conveyors, precise speed and feed control are required more often than not. While there are a number of options for precise control, probably the most cost effective is the Hydraulic Speed Control. HSCs
  • Flow Control Characteristic CV Value
    The CV value of a needle valve changes as shown in the GRAPH2 when the valve opening changes. Setting aside the control characteristics, the problem is the flow rate, not selection of an actual valve. When the maximum CV value is substituted in the aforementioned equation to find Q, the maximum
  • Measurement and Control Basics, Fourth Edition
    valuable as a concise and easy-to-read reference source on the subject. This new edition provides expanded coverage of pressure, level, flow,. temperature, analytical measurement, and process control computers. Material on the proper tuning of control loops was added to Chapter 1,. and expanded coverage
  • ADVANTAGES OF USING A THERMAL EXPANSION VALVE
    All phase change refrigerant systems require an expansion device which controls the flow of refrigerant in the evaporator. Two principal types of control are used: Thermal Expansion Valves or Capillary Tubes. Thermal Expansion Valves balance and modulate the refrigerant flow to the heat load
  • Selection Considerations for Control Valves Versus Regulators
    . A control valve is the final control element in a control system and needs to be evaluated in that context. A control valve is most frequently used in the control of the following parameters: * Temperature * Pressure * Flow * Level However, in principle, any continuously varying system parameter
  • Optimux Control Valves for Aerospace Testing Systems
    of flow, temperature, and pressure control solutions for aerospace applications that include the OpTE - a robust triple offset butterfly valve that ensures bubble-tight shutoff at any temperature - and the OpGL-XT - a rugged, multi-purpose, custom-engineered globe control valve for applications
  • Heat Control Using a Brainchild Chart Recorder and an Analog Output Card
    CAS DataLoggers recently provided the postsale technical solution for a seafood distributor who ordered a Brainchild VR-06 Paperless Chart Recorder to both record and control the temperature in a large oven. The oven was heated by hot water, and the control came from an iris valve.
  • Endurance Test, Model MTV
    The charts below demonstrate the effectiveness of Ventiduct for heat control by thermal radiation. The Ventiduct reduces the temperature rise in the valve by approximately 12°C. Test Conditions: Fluid - water; Valve Type - MTV-2; Full Rated Voltage Applied (24Vdc)

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