SMV stepping motor valve
SMV stepping motor valve for high flow regulation of gases or liquids.
SMV two-way metering valves with high precision linear stepping motors drive. The resolution of the stepping motor driven needles is 0.0005″/step. Low differential pressure valves, may be operated continuously (100% duty cycle). Valves stay in position as when de-energized.
Advantages over solenoid operated valves include cool operations, i.e. there are no control operating problems due to coils heating up, extremely fine resolution, very low differential pressures and high operating pressures. Valves are controllable by TTL compatible logic level and analog 0 to 5 Vdc signals.
| Materials | Aluminum models : Aluminum housings and valve blocks, Viton® O-Rings, PFA closing pins. Stainless steel / PTFE models : 316 stainless steel valve blocks, PTFE-lined aluminum housing blocks, Viton® O-Rings, and PFA closing pins. |
| Maximum Flow rates | 1000 L/min (air), 28 L/min (H2O) |
| Connections | 3/8″, 1/2″, compression and 3/4″ FNPT |
| Electrical connections | 9-pin “D”-connector, located at the side of the valve |
| Power Input | 12 Vdc @ 800 mA, or +24 Vdc @ 600 mA, protected by a 1600mA resettable fuse |
| Directional control signal | 12 Vdc CMOS compatible logic level signal (10K input impedance). (Logic High >= 7.5 Vdc, Low <2.3 Vdc) |
| Materials in contact with the fluid | Types 316 and 416 stainless steel, Viton® O-rings. Optional O-rings: Buna®, EPR and Kalrez® |
| Response time | 100ms time constant |
| Pressure drop at max flow | 700 to 1000 mbar |
| Maximum pressure | 35 bar(g) |
| Maximum differential pressure | 2.7 bar |
| Fluid temperature | 0 to 50 °C |
| Part Number | Maximum Flow Rate AIR (L/min) | Maximum Flow Rate H2O (L/min) | CV | Connections | Material |
|---|---|---|---|---|---|
| SMV20-AVD2 | 200 | 5.6 | 0.336 | 3/8″ compression | Aluminum |
| SMV20-SVD2 | 200 | 5.6 | 0.336 | 3/8″ compression | Stainless Steel |
| SMV30-AVE2 | 500 | 14.2 | 0.855 | 1/2″ compression | Aluminum |
| SMV30-SVE2 | 500 | 14.2 | 0.855 | 1/2″ compression | Stainless Steel |
| SMV40-AVF2 | 1000 | 28 | 1.735 | 3/4″ FNPT | Aluminum |
| SMV40-SVF2 | 1000 | 28 | 1.735 | 3/4″ FNPT | Stainless Steel |