Johnson control pneumatic valve actuator
[DOC File]Series 700 Analog Electronic Control System - Johnson Controls
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Provide a standard factory assembled and shipped-loose non-insulated valve piping package to consist of a 2-way, on/off, motorized electric control valve, unions, and two ball isolation valves. Control valves are piped normally closed to the coil. Maximum entering water temperature on the control valve …
[DOC File]15910 Controls Field Work
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Size operators for control dampers against maximum pressure or dynamic closing pressure, which ever is greater. Provide adjustable external stops to limit stroke in both directions. All mixed air system operators to have positioners. 2.4 CONTROL VALVES.1 Pneumatic - Johnson/Fisher # POS Application Material/Rating Sizes Two Way Three Way Notes
[DOCX File]SECTION 01000 - GENERAL REQUIREMENTS
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Outputs for modulating valve actuator and three-speed fan control or ECM fan control. Revise output requirement to floating control when floating type control valves are used. Floating control is not appropriate for applications that may desire fail open or fail closed control valves such as chilled beams.
Series 700 Analog Electronic Control System - Johnson Controls
Terminal unit manufacturer shall supply and manufacture a 5 to 10 PSIG pneumatic actuator capable of a minimum of 45 in. lbs. of torque. Actual sequence of operation is shown on the contract drawings. Terminal unit manufacturer shall coordinate, where necessary, with the Temperature Control Contractor.
[DOC File]Bab 3 - Petra Christian University
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A large control signal will provide high base drive, and the capacitor will charge much more quickly. Then the SCR will turn on much earlier in the cycle and more power will be delivered to the load. 3.1.2 TRIAC. An extension of the SCR discussed previously is a device that conduct in either direction.
SECTION 15973 - AUTOMATIC TEMPERATURE CONTROLS
g.Control Valve Schedules. This spreadsheet type schedule shall include a separate line for each valve and a column for each of the valve attributes, including: Code Number, Configuration, Fail Position, Pipe Size, Valve Size, Body Configuration, Close off Pressure, Capacity, Valve CV, Calc CV, Design Pressure, Actual Pressure, and Actuator Type.
[DOC File]Front Page - vit
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Control valve characteristics: inherent and installed. Control valve classification, their construction, advantages, disadvantages and applications of globe, 3-way, diaphragm, rotary, ball, butterfly. Designing control valve for gas, vapor and liquid services: valve sizing by ANSI/ISA 75.01 std., high temperature-pressure service valves. Part B ...
[DOC File]Series 700 Analog Electronic Control System - Johnson Controls
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The damper shall pivot in self lubricating bearings. The damper actuator shall be mounted on the exterior of the terminal for ease of service. The valve assembly shall include internal mechanical stops for both full open and closed positions. The damper blade seal shall be secured without use of adhesives.
[DOC File]CHAPTER IV - Petra Christian University
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Process control element spesifically associated with flow is the control valve. Control Valve Principles. If a given fluid is delivered through a pipe, theb the volume flow rate is. Q = flow rate (m3/s) A = pipe area (m2) v = flow velocity (m/s) The purpose of the control valve is . to regulate the flow rate of fluids through pipes in the system.
[DOC File]SECTION 230923.11 - CONTROL VALVES
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Section 230943 "Pneumatic Control System for HVAC" for pneumatic control valves and actuators in pneumatic control systems. Section 230993 "Sequence of Operations for HVAC Controls" for requirements that relate to Section 230923.11. Retain terms that remain after this Section has been edited for a project. Cv: Design valve coefficient.
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