Product Description Specifications Constant Pressure Expansion Valve Types Expansion Valves

Features:Exquisite angle design for easy installation

constant pressure expansion valve types Expansion Valves   Introduction:   1.  can adjust compressor capacity and make it match with the load of evaporator.   2. Placed in a bypass between high and low pressure side of refrigeration system, PTV imposes a     lower limit on compressor suction pressure by supplying the low pressure side with replacement      capacityin the form of hot or cool gas from high pressure side.   Features: 1)  Exquisite angle desigh for easy installation. 2)  Accurate agjusting pressure. 3)  Wide capacity and operating ranges.   Type and data:  

Model	Normal capacity                                                 (KW)			Connection              ( in. )		Adjusting range              (MPa)	Medium temperature (°C)	Max. working pressure (MPa)	Max. testing pressure (MPa)
	R134a	R22/R407C	R404A/R507	Inlet	Outlet
PTV8	7	11	7	3/8 SAE	1/2 SAE	0.03→0.6	-50~150	2.5	3
PTV10W	14	22.5	16.2	1/2 ODF	5/8 ODF
Notes:1) Norminal capacity is based on evaporating temperature +5°C,condensing temperature +38 °C; 2) After the model, “W” indicates solder ODF, “E” indicates external equlization. 3)Factory setting opening pressure is 0.4Mpa. Adjust regulation knob at clocking rotation for one round, opening pressure increases 0.1 Mpa, inversely, opening pressure decrease 0.1 Mpa.

    Dimension(Unit: mm)           Note: The outlet pressure via the 'adjustment knob' to change the size, each spin foot circle (360 °)    about changes 0.1MPa     Temperature of liquid entering valve correction factor  

Refrigerant	Refrigerant liquid temperature   °C
	10	16	21	27	32	38	43	49	54	60
R134a	1.33	1.27	1.21	1.11	1.07	1	0.93	0.87	0.81	0.71
R22	1.3	1.24	1.18	1.12	1.06	1	0.94	0.88	0.82	0.78
R404A	1.48	1.39	1.3	1.19	1.1	1	0.89	0.78	0.67	0.56
To determine the capacities for other temperatures of vapor free liquid refrigerant entering the valve, multiply the capacities listed in the table of extend capacities.

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