In refrigeration and air conditioning applications, there are two main types of expansion valves: thermostatic expansion valves (TXVs), and automatic, or constant-pressure, expansion valves (AXVs).

ETS250-400,034G2002,034G3001 Danfoss Electric expansion valve operation The ETS valves operate modulating by electronically controlled activation of the AST stepper motor. The motor is a type 2-phase ...