Reciprocating Compressors
Air compressors of various designs are used widely in numerous applications. Compressed air has numerous uses throughout a facility including the operation of equipment and portable tools. Three types of…
PLC Program for Conditional Control Logic
Create a PLC program for Conditional Control Logic. Find more PLC programming tutorials, PLC example programs and PLC ladder logic mcqs.
Valve Position Indication
Operators require indication of the position of certain valves to permit knowledgeable operation of the plant. For such valves, remote valve position indication is provided in the form of position…
Speed of Actuators
Plant safety considerations dictate valve speeds for certain safety-related valves. Where a system must be very quickly isolated or opened, very fast valve actuation is required. Where the opening of…
Solenoid Actuated Valves
Solenoid actuated valves provide for automatic open-close valve positioning as illustrated in Figure. Most solenoid actuated valves also have a manual override that permits manual positioning of the valve for…
Self-Actuated Valves, Pneumatic & Hydraulic Actuators
Pneumatic actuators as illustrated in Figure, provide for automatic or semiautomatic valve operation. These actuators translate an air signal into valve stem motion by air pressure acting on a diaphragm…
What is Motor Actuator ?
Electric motors permit manual, semi-automatic, and automatic operation of the valve. Motors are used mostly for open-close functions, although they are adaptable to positioning the valve to any point opening…
Valve Handwheel Types : Fixed, Hammer, Gear
Valve actuators are selected based upon a number of factors including torque necessary to operate the valve and the need for automatic actuation. Types of actuators include manual handwheel, manual…
What is Needle Valve ?
A needle valve is used to make relatively fine adjustments in the amount of fluid flow. The distinguishing characteristic of a needle valve is the long, tapered, needle like point on…
Difference between Globe Valve and Gate Valve ?
Both flow valves,Globe valve and gate valve have similar external housing but operational functions of both differ little. The main difference between globe and gate valve is in the form…
