Control.com - Nerds in Control

I am looking for a brand of proportional solenoid valve of 1/4" and 1/2" having the capeability to control fluid flow, such as water, continuously. Of course, the proper controller is in concern. Thanks in advance for your information. My e-mail address is as follows:
stavakolie@control-sazan.com

ASCO's Posiflow valve line comes from a solenoid valve form and fit, with unctiona;ity like a proportional valve by varying the supply voltage to the coil over 0-24Vdc

See their description at

http://www.ascovalve.com/products_detail.asp?detail=proporti onal_data

Bud

We have used badger valves for years now.

http://www.badgermeter.com/rcvr.htm

I have never seen a proportional solenoid valve, as solenoids are either activated or not activated, therefore either 0% or 100% They can be used for proportional control by adjusting the duty cycle in a time proportioning mode. For some applications this is entirely acceptable. For a more uniform and stable output control, a proportional control valve would be required which can be driven by a 4-20ma signal.

Gerald Beaudoin

We have proportional type solenoids on hydraulic driven pump units to control the flow of the fluid and thus the speed of the pump. Check some variable speed hydraulic pump makers for the device you are looking for. Also Buekert valves makes proportional type solenoids for fluid and gas control. Follow this link to see a 12mm proportional valve.

http://www.burkert.com/COM/buerkert_products.php?type=28 36&sk_id=36

BTW I am not affiliated with Buerkert or any other manufacturer.

Hope that helps.
Mark Ray

We have valves that will give porportional control of flow with a variable input signal. Please describe the application. Are you going to close the loop? What is pressure, and flow range. How accurate does the flow need to be? What kind of pump are you using?

Here some info about PSV (Proportional solenoid valve) http://valvesinfo.blogspot.com/2006/09/proportional-solenoid-valve.html