NRF＆NHC＆RT series thermostatic expanslon valve is a new design．It consults the technology knowhow imported from ALCO and it supply many kinds charge method and suits for freezer，ice make，dehumidifier etc．Also，it can exchange with RF series thermostatic expansion valve.　

　　 Constant super－heat adjusting porformance．
　　 Evaporator temperature range：－40℃ 10℃．
　　 With MOP function．
　　 Changeable imputing filter net．
　　 Suitting for R12，R22，R502，R134a．

　Input connects with accumulator and output connects with input of evaporator．
　Fitting should ensure sensor bulb can sense output temperature of evaporator．External equalization tube connects top side of suction tube near bulb．
　Super-heat adjusting 　
　Take off cap and turn adjusting stem.Turn adjusting stem anticlockwise one round,reduces super-heat 1.5℃. Set superheat 3.5℃ when exit factory. Static super-heat adjusting range is 2-8℃.