Kahan Controls | HVAC - R Controls & Technology

Bi‑polar stepper motor: Full-step control using 2-phase chopper drive; approx. 750 discrete steps, enabling smooth, linear modulation across 10–100% stroke.
Robust design: Rated for 870 psig (~60 bar) working pressure and ambient temperatures from –40 °F to 130 °F.
Wide operating range: Rated up to 43–60 bar, and –50 °C to +120 °C, covering most refrigerants including HCFCs, HFCs, and subcritical CO₂.
Compact inlet/outlet: 5/8″ inlet and 7/8″ outlet (ODF), suitable for a variety of HVAC/R systems.
Fast actuation: Full-stroke achieved in ~1.5 seconds; low holding current (~100 mA), efficient for dynamic control.
Solenoid shut-off: Many models include positive shut-off to prevent liquid hammer and eliminate separate solenoid valves.
Modular capacity: EX2-based bodies support various orifices allowing selection across wide capacity ranges (up to ~18 kW).

Bi-polar stepper design ensures linear, jitter-free modulation, minimizing superheat swings and improving system efficiency.
Hermetic designs and durable internal components guarantee long service life.
Bi-flow capability ideal for reversible heat-pump systems.
In-built shut-off prevents liquid hammer and allows design simplification by removing extra solenoid valves.
Smooth stepper actuation leads to quiet operation and reduced mechanical stress.
Low holding current and fast response time use less power and enhance system responsiveness

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Blast Chillers/ Freezers

Chiller Rooms

Chillers/ Heat Pumps

Freezer Rooms

CO2

Cold Chain Logistics

Cold Rooms

BIPOLAR