Control Valve stroke checking and leak testing services in UAE
• A control valve is a final control element that changes the valve of a variable by changing the flow rate of the control agent.
• It consists of an operator and valve body, with the operator providing power to vary the position of the valve plug inside the body.
• Common types of control valves include single-seated valves, double-seated valves, and actuators.
• The valve coefficient (CV) is defined as the number of gallons per minute of water passing through a fully open valve at a pressure drop of 1 psi.
• Various valve types include butterfly, three-way, cage, camflex, link connected to valve positioner, booster relays, angle valves, and solenoid valves.
• Butterfly valves are used in systems with small pressure drops, while three-way control valves are used in special systems.
• Common types of control valves include Globe valves single or double seated, Angle valves, Butterfly valves, three-way valves, and ball valves.
• Single-seated valves are used on smaller sizes and in larger sizes where absolute shut-off is required.
• Double-seated valves are used on bigger size valves and high-pressure systems, with less actuator forces required.