Sporlan SEH(I)-175 Stepper Motor Electronic Expansion Valve – 610 kW / 175 Tons

Sporlan SEH(I)-175 is a stepper motor electronic expansion valve (EEV). With a capacity of 610 kW (≈175 tons), it controls liquid injection in large chillers, industrial refrigeration and process lines. The bipolar stepper motor positions the valve in 6,386 steps, providing superheat control with a precision that a thermostatic valve cannot achieve.

Why an Electronic Valve?

• Precise superheat: The stepper motor adjusts the flow continuously and steplessly; it operates stably even at part load, and energy consumption drops.
• Wide capacity band: Electronic control provides smooth feeding across the 10-100% load range — a thermostatic valve starts hunting in this band.
• Controller compatibility: Works with Sporlan/standard EEV drivers; if the signal is lost, the valve can be moved to a safe position.

Technical Specifications

• Model: Sporlan SEH(I)-175 | Type: Stepper motor EEV
• Capacity: 610 kW / ≈175 tons
• Motor: Bipolar stepper, 6,386 steps
• Connection: Inlet 1 3/8" / Outlet 2 1/8" (ODF solder)

• 🔧 Protect the motor head with a wet cloth during brazing; if the body temperature exceeds the limit, the winding will be damaged.
• Enter the driver parameters according to the valve model — with a wrong step count the valve cannot open/close fully.