SEHI-175 Electrically operated stepper motor valve

Electrically operated stepper motor valves for precise flow control of liquid refrigerants


Valve SER-B, -C, -D SERI-G, -J, -K, -L SEHI-175 SEHI-400
Motor Type 2 phase, bipolar wet motor
Compatible Refrigerant All common, HCFC and HFC refrigerants, including R-410A and subcritical R-744 All common, HCFC and HFC
refrigerants
Compatible Oils All common Mineral, Polyolester and Alkybenzene oils
Supply Voltage 12 VDC -5% +10% measured at the valve leads
Cable Type IP67 Removable Quad Position IP66 Removable Hermetic Hermetic
Phase Resistance 100 Ohms ± 10% 100 Ohms ± 10% 75 Ohms ± 10% 75 Ohms ± 10%
Current Range 120 mA / winding 120 mA / winding 160 mA / winding 160 mA / winding
Power Input 2.8 watts 2.8 watts 3.8 watts 3.8 watts
Recommended
Step Rate
200 / second (L/R), up to 400 / second (current limited)
Number of Steps 2500 2500 6386 6386
Full Motor Transit Time 12.5 seconds 12.5 seconds 34 seconds 34 seconds
Resolution .00009'' (.0023 mm) / step. .00012'' (.003 mm) / step. 00008'' (.002 mm) / step. 00008″ (.002 mm) / step.
Stroke 0.23'' (5.8 mm) .297'' (7.5 mm) .500'' (12.7 mm) .500'' (12.7 mm)
MOPD 580 psid (40 bar) 500 psid (34 bar) 500 psid (34 bar) 300 psid (21 bar)
MRP 700 psig (48 bar) 700 psig (48 bar) 620 psig (43 bar) 500 psig (34 bar)
Max Internal Leakage 100 cc/min @ 100 psig (6.9 bar), dry air
Max External Leakage .10 oz/yr @ 300 psig (2.8 g/yr @ 20 bar)
Operating Temp.
Range
-50°F to 155°F (-45°C to 68°C)
Materials of
Construction
Brass, copper, synthetic seals, stainless steel

Valve SER-B, -C, -D SERI-G, -J, -K, -L SEHI-175 SEHI-400
Motor Type 2 phase, bipolar wet motor
Compatible Refrigerant All common, HCFC and HFC refrigerants, including R-410A and subcritical R-744 All common, HCFC and HFC
refrigerants
Compatible Oils All common Mineral, Polyolester and Alkybenzene oils
Supply Voltage 12 VDC -5% +10% measured at the valve leads
Cable Type IP67 Removable Quad Position IP66 Removable Hermetic Hermetic
Phase Resistance 100 Ohms ± 10% 100 Ohms ± 10% 75 Ohms ± 10% 75 Ohms ± 10%
Current Range 120 mA / winding 120 mA / winding 160 mA / winding 160 mA / winding
Power Input 2.8 watts 2.8 watts 3.8 watts 3.8 watts
Recommended
Step Rate
200 / second (L/R), up to 400 / second (current limited)
Number of Steps 2500 2500 6386 6386
Full Motor Transit Time 12.5 seconds 12.5 seconds 34 seconds 34 seconds
Resolution .00009'' (.0023 mm) / step. .00012'' (.003 mm) / step. 00008'' (.002 mm) / step. 00008″ (.002 mm) / step.
Stroke 0.23'' (5.8 mm) .297'' (7.5 mm) .500'' (12.7 mm) .500'' (12.7 mm)
MOPD 580 psid (40 bar) 500 psid (34 bar) 500 psid (34 bar) 300 psid (21 bar)
MRP 700 psig (48 bar) 700 psig (48 bar) 620 psig (43 bar) 500 psig (34 bar)
Max Internal Leakage 100 cc/min @ 100 psig (6.9 bar), dry air
Max External Leakage .10 oz/yr @ 300 psig (2.8 g/yr @ 20 bar)
Operating Temp.
Range
-50°F to 155°F (-45°C to 68°C)
Materials of
Construction
Brass, copper, synthetic seals, stainless steel

Valve SER-B, -C, -D SERI-G, -J, -K, -L SEHI-175 SEHI-400
Motor Type 2 phase, bipolar wet motor
Compatible Refrigerant All common, HCFC and HFC refrigerants, including R-410A and subcritical R-744 All common, HCFC and HFC
refrigerants
Compatible Oils All common Mineral, Polyolester and Alkybenzene oils
Supply Voltage 12 VDC -5% +10% measured at the valve leads
Cable Type IP67 Removable Quad Position IP66 Removable Hermetic Hermetic
Phase Resistance 100 Ohms ± 10% 100 Ohms ± 10% 75 Ohms ± 10% 75 Ohms ± 10%
Current Range 120 mA / winding 120 mA / winding 160 mA / winding 160 mA / winding
Power Input 2.8 watts 2.8 watts 3.8 watts 3.8 watts
Recommended
Step Rate
200 / second (L/R), up to 400 / second (current limited)
Number of Steps 2500 2500 6386 6386
Full Motor Transit Time 12.5 seconds 12.5 seconds 34 seconds 34 seconds
Resolution .00009'' (.0023 mm) / step. .00012'' (.003 mm) / step. 00008'' (.002 mm) / step. 00008″ (.002 mm) / step.
Stroke 0.23'' (5.8 mm) .297'' (7.5 mm) .500'' (12.7 mm) .500'' (12.7 mm)
MOPD 580 psid (40 bar) 500 psid (34 bar) 500 psid (34 bar) 300 psid (21 bar)
MRP 700 psig (48 bar) 700 psig (48 bar) 620 psig (43 bar) 500 psig (34 bar)
Max Internal Leakage 100 cc/min @ 100 psig (6.9 bar), dry air
Max External Leakage .10 oz/yr @ 300 psig (2.8 g/yr @ 20 bar)
Operating Temp.
Range
-50°F to 155°F (-45°C to 68°C)
Materials of
Construction
Brass, copper, synthetic seals, stainless steel

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