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Click image to zoom.	EPV-250B Price: $ 425.00 Add to Cart Part Number: 1161 Usually ships in: 2-3 weeks Shipping weight: 6.00 lbs Maximum Cv = 0.6 Brass with 303ss trim 4-20mA or 1-5 VDC input 1/8 percent resolution (new) Controls liquids and gases Low cost No stick-slip Adaptive noise filter (new) Long-life rotary stem seal Compact size Five year warranty	Owner's Manual Similar product(s) EPV-250SS Accessories 12 Volt DC Power Supply
Description The EPV-250B Electronic Proportional Valve is a low-cost, computer-controlled proportional valve which directly accepts a 4-20 mA or 1-5V DC control signal. The EPV performs better, costs less to install and less to operate than competitive valves. It is ideal for accurate control of liquid and gas flow. The EPV has no backlash and no hysteresis. This greatly simplifies control programs. The valve is opened and closed by a zero-backlash screw mechanism. A step motor is directly connected to the valve without gears. The valve can also be operated manually. An adaptive digital noise filter eliminates dithering of the valve due to noisy control signals. This digital filter can be disabled via a switch on the circuit board. The valve design features a long-life rotary stem seal. Rotary seals are more durable and require less maintenance than reciprocating stem seals used in pneumatic valves. This seal does not cause the unwanted stick-slip action of pneumatic valves. The compact size of the EPV makes it easier to handle, and allows it to be installed in smaller spaces. The EPV is about one-third the size of a pneumatic valve. An EPV installation costs less than a comparable pneumatic control valve system. There is no need for compressed air, filters, regulators, I-P converters, or pneumatic air lines. Simply connect the EPV to the control signal and the power supply. The EPV is backed by a five (5) year warranty. The reliable, low-maintenance design and heavy-duty construction reduce costly downtime. The EPV-250B has a brass valve body with Type 303 stainless steel trim. It has 1/2 inch pipe fittings with a 1/4 port size and a Cv of 0.6. Try our interactive valve sizing calculator to help you select the correct valve for your application. The old instruction manual can be found here.
Specifications CONTROLLER Updated March 1, 2016 Type: Single-board microcontroller with 10 bit AD converter Control: Open-loop Inputs: 4-20 mA current or 1 - 5 VDC voltage for position. Switch selectable. Input Impedence: 4-20mA selected: 250 Ohm 1-5 VDC selected: 32K Ohm Signal floats or is grounded, switch selectable, and has 1M Ohm isolation from analog circuit Outputs: None Modes: Full range, direct acting only Adaptive digital noise filter on or off via switch Adjustment: None Temperature: 32 °F to 120 °F (0 C to 49 C) Humidity: 10 to 80% non-condensing Enclosure: Stainless steel, general purpose Power supply: 12-24 VDC, 1.5A (1043 Power Supply recommended) Power: consumption 23 Watts maximum, 1 Watt typical ACTUATOR Type: DC step motor, 200 steps/revolution, 4 revolutions for full stroke Resolution: 800:1 (0.125%) Speed: 45 RPM - 5 seconds full stroke Torque: 57.5 oz-in peak VALVE Type: Globe, In-line Port Size: 1/4 inch Cv: 0.6 Flow characteristics: linear Valve body material: Brass Valve trim material: Type 303 stainless steel Seat seal material: 25 % glass filled TFE O-ring material: ethylene propylene (standard - other materials available) Pipe size: 1/2 NPT Connection: Female pipe thread Static Pressure: 300 psi Differential Pressure: 0 - 120 psi Temperature: 32 - 250 Degrees F (0 - 121 C) Bonnet Seal: Encapsulated EPR O-ring (Neoprene, silicone and other O-ring materials also available) Stem Motion: Rotational COMPLETE UNIT Dimensions: 8.0 x 3.5 x 2.5 H x W x D (inches)
Installation Drawing

Information subject to change without prior notice.

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