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Conduct Research Top

  • Thermostatic Valves vs. Solenoid Valves
    Thermostatic valves modulate open or closed in proportion to fluid temperature without the need for an external temperature transducer and external power, whereas solenoid valves require a temperature sensor, amplifier, control electronics, and DC Power to operate.
  • 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
  • Spraywater Control Valves
    proper steam temperature. Furthermore, efficient spray control prevents thermal damage to the steam piping, the superheater and the reheater tubes as well as downstream equipment. Operating a turbine with steam above the temperature limits accelerates metal fatigue and creep. This control is necessary
  • Valves & Specialty Metal Materials (.pdf)
    The role of valves in a process is far from insignificant. These components enable engineers to control the vitals of a process: temperature, pressure, concentration, and flow. In some cases, the failure of a valve could be catastrophic and in other cases just a headache, but whatever your
  • 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
  • When to Select an Electric or Pneumatic Rotary Actuator with Quarter Turn Valves
    Pneumatic and Electric Actuators each have advantages and disadvantages. The criteria in determining which is the best actuator includes the power source, on/off or modulating control valve function, media, hazard considerations, ambient temperature, environmental conditions, failure positon upon
  • Traditional solenoid valves are simple to install but may not be the right solution for long term reliability or high flow applications
    Replacing a solenoid valve with a DynaMatic electric ball valve...Why and how?. Solenoid valves are typically easy to install and are used in applications utilizing pressure, flow, temperature and level switches. They can also be controlled by PLC units that only output a single control signal
  • 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
  • Application Profile #1: Instrument Enclosure Valve (Heating)
    Instruments/analyzers installed out-of-doors are exposed to adverse conditions and are customarily enclosed in insulated boxes to protect them from physical and weather damage. Many installations require a certain inside temperature be maintained to prevent freezing, control viscosity
  • Application #2: Manual vs. Automatic Control of Steam Tracing Supply Using US/A or TV/SC-A Valves
    A winterizing steam tracing system in a plant located in Philadelphia, PA consumes about 500 pounds per hour of steam. This system was manually turned on when danger of freezing temperatures approached (mid-September) and turned off in late Spring when danger of freezing had passed (mid-April).
  • Heating and Cooling Medium Control
    Some chemical products must be heated to an optimum temperature above ambient temperature, but are also sensitive to overheating, e.g.: formaldehyde. THERM-OMEGA-TECH's HAT/MIX valves can be used to provide a convenient, economical, reliable and effective hot water tracing system. Steam and water
  • A Push Towards Efficiency
    Series A pinch valves offer positive control of fluids in sterile pharmaceutical and biotechnical applications. Red silicone and EPDM pinch tube elements comply with 21CFR Part 177.2600. The valves offer straight-through flow for enhanced draining and cleaning. A spring-loaded stem controls
  • Interphex Preview, Part Deux
    in pressure, flow and temperature control. New products include the Digihelic Differential Pressure Controller, process pressure gages, Teflon and rotatable scale flowmeters, air velocity transmitters, thermocouple temperature switches, needle and ball valves, and much more. DeltaV System, building
  • Interphex Stands Test of Time (and Economy)
    By Paul Thomas, Senior Editor Budzar offers custom-built heat transfer systems specific to pharma, whether temperature control modules, low temperature chillers, biowaste systems, process skid packages, or a portable vessel heating/cooling system. Each custom unit or system design includes approval
  • New ASSE 1070 Sets Safety Standard for Sink, Lavatory and Bathtub Tempering
    This past February the ASSE Board approved standard 1070-2004 entitled Performance Requirements for Water. Temperature Limiting Devices. The standard was developed for thermostatic devices that "control and limit the. water temperature to fittings for fixtures such as sinks, lavatories or bathtubs
  • Fundamentals of Data Acquisition
    Data acquisition systems make various types of physical measurements, such as temperature, pressure, flow, strain, position, and speed, using electronic equipment. The data collected is usually sent to a computer for analysis and display. Data acquisition and control (DAC) systems also take action