Looking for a specialty H20 Valve

[firebrd10]

I am looking for a analog controlled valve wich will regulate the water flow to my production system (volume).
I am looking for an all inclusive unit that I can send 1 signal to and I won't need a seperate flow meter to close the control loop.
Does anybody know of a manufacturer that I can purchase something like this from in the US.

Thanks,

Tim

 

[Rube]

Check out Burkert Valves.

 

[danw]

For low flow gases there are several brands of thermal dispersion flowmeters that have an integral PID controller that drives a needle valve. The entire assembly is slightly bigger than a pack of cigarettes and uses 1/8" or 1/4" tube fittings for the flow connections.

There are a number of fieldbus valves (Burkert was mentioned above) that incorporate a PID controller along with a positioner on a modulating valve, but I'm not aware of any that incorporate a flowmeter directly into a valve assembly
Fieldbus valves assume that a flowmeter signal will be fed directly to the valve's integral controller, rather than feeding the flowmeter signal to a controller in a control room and then feeding the controller's output back to the valve.

Dan