Temperature responsive expansion valves

WTV WTVA series temperature responsive expansion valves(liquid injection) are usually installed suction side of compressor.

WTV WTVA series temperature responsive expansion valves(liquid injection) are usually installed suction side of compressor in refrigeration system to protect the refrigeration system from too high discharge gas or oil temperature.The capacities of WTVA series temperature responsive expansion valves (liquid injection) are large and usually used for large refrigeration system. Operating principleWhen the discharge gas or oil temperature in refrigeration system is too high, the valve will open.   Liquid refrigerant will be fed into the suction side and compression cavity after temperature drop through the valve, and then cool the motor coil and the mixture of refrigerant and oil, which makes the liquid refrigerant entering the evaporator in lower temperature. Technical dataMax. working pressure3MPaMax. testing pressure3.5MPaType data

Model	Intermediate pressure(Pi) (MPa)	Opening temperature (tb)range()	ConnectionInlet×Outlet(in.)	Capillary length(m)
WTV	0.1	55→85	3/8×1/2 SAE	1
	0.2	65→90
	0.3	75→95
	0.4	85→100
	0.5	90→110
	0.6	95→114
	0.7	101→116
	0.8	106→119
	0.9	111→123

Model	Intermediate pressure(Pi) (MPa)	Opening temperature (tb)range()	ConnectionInlet×Outlet(in.)	Capillary length(m)
WTVA	0.1	50→75	1/2×5/8 SAE	2
	0.2	75→85
	0.3	80→90
	0.4	85→95
	0.5	90→101
	0.6	94→105
	0.7	100→110
	0.8	106→115
	0.9	111→119

Notes: tb= bulb temperature(Discharge gas temperature of compressor),Pi= Suction pressure.

Temperature responsive expansion valves