Thermostatic Expansion Valve (with Orifice)

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Description
Thermostatic expansion valves regulate the injection of refrigerant liquid into evaporators, in which the injection is controlled by the evaporator’s superheat. The CTV and DTV thermostatic expansion valves are widely used in refrigeration cabinets, ice machines, dehumidifiers, and refrigeration/air conditioning requirements in a wide range of temperatures.

Thermostatic Expansion Valve (with Orifice)

Characteristics
1. Constant superheat adjustment performance
2. Interchangeable orifice assembly
3. Wide range of evaporating temperature (-40 to 10°C)
4. The valve can be supplied with an MOP (maximum operating pressure)
5. Adjust to refrigerant R410A

Type & Data

Model	Equalization	Equalization connection	Connection form	Connection		Capillary tube
				Inlet×Outlet		(m)
				in.	mm
CTV	Internal		Flare SAE	3/8×1/2	10×12	1
CTVE	External	Inch Connection： 1/4"Flare Nut 7/16"- 20UNF Thread
DTV	Internal		Solder ODF
DTVE	External	Metric connection Φ6 Flare Nut M12X1.25 Thread

Type & Data

Model	Orifice number	Nominal capacity
		(KW)
		R134a	R22	R407C	R404A/R507	R410A
CTV(E) DTV(E)	0	0.65	1.14	1.13	0.8	1.32
	1	1.5	2.8	2.8	1.85	3.25
	2	2.5	4.7	4.57	3.1	5.45
	3	4	7.5	7.03	5	8.7
	4	6.7	12.2	11.96	8.1	14.15
	5	8.2	14.9	14.4	9.9	17.28
	6	9.5	17.2	16.9	11.4	19.95

Nominal capacities are based on 38°C, a condensing temperature of 4°C, evaporating temperature and 1K liquid sub cooling at the inlet of the expansion valve.

Valve Pressure drop Ratings
R134A: 0.41MPa
R22, R407C, and R404A/507: 0.69Mpa
R410A: 1.35Mpa

Ordering Information

Connection	Valve code	Equalization	Refrigerant code	Orifice number
C	TV	E	X	6
C-Flare SAE D-Solder ODF	Valve code	"E" indicates external equalizer (Omit for internal equalizer)	N-R134a X-R22 Z-R407C S-R404A/R507 L-R410A	Orifice number（0 ~ 6)

Model CTVEX6 is an example only.

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