Modulating valve

Automated OnOff and Modulating Control Valves. They go beyond simple shutoff or isolation (onoff) and actually allow precise control of the flow rate. Modulating float valves are not tight-closing, in fact, our valves are designed to pass some flow when the ball is in the up or closed position, so as not to stop main drain flow entirely.

The actuators on these valves use feedback and control signals to accurately open and close the valve. A modulating control valve is an automated valve that is used to control the amount of flow in a system or process. As a manufacturer of high performance pinch valves, RF Valves recognizes that modulating control valves are critical to process industry performance.

Modulating control requires a proportional control signal from room temperature control or BMS, and a precise control valve with proportional actuator.

The optimum operating condition for the float controlled valve is between and open. Actuators allow valves to be operated automatically by a control system or manually from a remote location. To insure that RF VALVE is up to the task: All control valves are built to ASME ANSI B1 ANSI ISA, DIN and ISO face-to-face dimension standards.

Modulating vs On-Off Control - which is best for HVAC. Proportional control signals are usually in the range of voltage 0-10V, 2-10V or current 0-20mA, 4-20mA (all can be reversed).

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