The Porter EPC electronic proportional control valve is an electromagnetically-actuated, proportional control valve designed for use in closed loop flow or pressure control systems. When coupled with a flow sensor or pressure transducer and a proportional electronic controller, the Model EPC is capable of providing steady and precise control of gas flow rates or pressures.
The Model EPC is a DC-driven, normally closed valve which includes an elastomeric valve seat to provide bubble-tight shut-off. A broad range of flow coefficients (Cv’s) is available for either flow or pressure control.
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Model EPC: Electronic Proportional Control Valve
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The Porter Instrument Model EPC Electronic Proportional Control Valve is an electromagnetically-actuated, proportional control valve designed for use in closed loopflow or pressure control systems. When coupled with aflow sensor or pressure transducer and a proportional electronic controller, Model EPC is capable of providing steady and precise control of gas flow rates or pressures. The Model EPC is a DC-driven, normally-closed valve which includes an elastomeric valve seat to provide bubble-tight shut-off. A broad range of flow coefficients (Cv’s) is available for either flow or pressure control. The Model EPC is offered with either integral compression fittings for in-line mounting or as a manifoldmount version. To allow design and user flexibility, custom configurations in OEM-scale quantities are also available.
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Product Features
• Greater Than 50:1 Dynamic Range
• Many Electrical and Mechanical Configurations Available
• Low Cost
• Easily Customized
• Low Power Consumption
• Bubble-Tight Shut-Off
• Cleaned for Use in Analytical Instrumentation
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MECHANICAL SPECIFICATIONS
Maximum Operating Pressure
200 PSIG
Maximum Operating Temperature
85° C (185°F)
Available CV’s
1.6 x 10-4 to 4.0 x 10-2
Flow Capacity
40 SCCM up to 10,000 SCCM
Full Scale (nitrogen at 70°F & 5 PSID)
Rangeability
50:1 minimum
Fitting Sizes and Type
1/16’’, 1/8’’ or 1/4’’ compression
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ELECTRICAL SPECIFICATIONS
Coil and Connection Resistance
75-85 ohms
Coil Inductance
25 mH
Opening Voltage
2.5-7 Vdc
Control Range Span
1-2 Vdc
Power Dissipation
0.8 watts typical
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MATERIALS OF CONSTRUCTION
Valve Base (Body)
Aluminum (black-anodized) or Stainless Steel
Orifice
Brass or Stainless Steel
Valve Trim
Stainless Steel
O-Rings and Valve Seat
Buna N, EPDM, Kalrez®, Neoprene or Viton®
Fittings
Brass or Stainless Steel
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ORDERING INFORMATION
To order, please specify
• Model number
• Valve Base (Body) Material
• O-Ring Material
• Valve Seat Material
• Fitting Size and Type
• Gas Type
• System Flows (Minimum, Nominal and Maximum)
• Operating Temperature
• Upstream (inlet) Pressure
• Downstream (outlet) Pressure
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