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High Flow Proportional Valve




  • Up to 400 LPM Flow Rate
  • Unique Proportional Valve Design
  • Easily Cleaned and Maintained
  • Quiet Operation
  • Low Hysteresis Performance
  • Controls Air, Water, and Other Mediums
Lead Time

1‐5 Units2-3 Weeks
6 Units or MoreConsult Sales

We offer discounts for orders of 25 units or more. Please contact our sales department for a quote. 

Kelly Pneumatics, Inc. introduces the High Flow Proportional Valve, which offers the highest flow rates of our proportional valve product line. his valve performs excellently at low or high pressures, and offers low hysteresis performance characteristics with exceptional repeatability. Even at lower input pressures, the high flow valve can reach flows of up to 200-300 LPM. We also offer alternate versions that are resistant to both high and low temperatures, therefore performing consistently in many different environments.


Valve Function 2-Way, Normally Closed
Electrical Connection Flying Wire Leads
Working Pressure -14.7 to 100 psig (6.8 bar) (standard)
500 psig (custom)
Flow Range 0-600 liters per minute of air flow
Orifice Size .125, .156, or .188 inches
Voltage Range 0-10 or 0-20 VDC
Port Types 1/4″ NPT or 3/8″ NPT
Seal Material Buna-N, Viton, or EPDM
Operating Temp. -40° to 200°F (-40° to 93°C)
Maximum Hysteresis 5-8% of full current
Leak Rate Bubble Tight Seal
Type of Operation Direct solenoid
Filtration 40 Micron Recommended
Wetted Materials Cold rolled stainless steel w/ electroless
nickel plating, brass and 304 stainless steel.
Power 8.2 watts (max)



More From This Product Line

Max Flow Rate:32 LPM

Max Flow Rate:140 LPM

Max Flow Rate:300 LPM

Not Sure Which Proportional Valve You Need? Please Tell Us About Your Application. We'll Help You Select the Perfect Valve For Your Project.

Purchasing Information

After completing your order, you will receive an email confirmation, as well as a shipment tracking number when your order has shipped.

Payment: We accept PayPal Account payments and most major credit cards. Phone orders are also accepted.

Refund Policy: Give it a try! We offer a 30-Day refund period for all orders. If you ship back the order and confirm your return is in transit within 30 Days of receiving the order, we will refund the cost of units ordered. This refund does not include parts that are damaged by you or missing components. All shipping costs are non-refundable unless the package was incorrectly shipped or you received defective products.

Cancellations: You can cancel your order for a full refund If your order hasn’t shipped. Contact us and submit your order number to request a cancellation.

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