NRF(E) series thermal expansion valveDetailed product description：

Overview
The NRF (E)/RT (E) series thermal expansion valve is an integrated expansion valve suitable for applications in air conditioning, commercial refrigeration, transportation air conditioning, and refrigeration.

characteristic
Stable overheating regulation performance.
Evaporation temperature range: -40 ℃ to+10 ℃.
MOP (motor overload protection) function can be provided.
The imported filter screen can be replaced.
Suitable for R22, R134a, R407c, R404A/R507 refrigerants and other media.
Overheating regulation
The factory set superheat is 3.5K, and the static superheat adjustment range is 2-8K.
Unscrew the sealing nut, rotate the adjusting rod, turn the adjusting rod clockwise once, and the degree of superheat increases by 1.5K,
Rotate the adjustment lever counterclockwise once to reduce the superheat by 1.5K.

NRF (E) series thermal expansion valve selection table Technical data

Note: The nominal cooling capacity is based on an evaporation temperature of te=4.4 ℃, a condensation temperature of tc=40 ℃, and a refrigerant temperature in front of the valve of t1=37.8 ℃.

Overview
The RTB/RTBT series thermal expansion valve has bidirectional throttling function and is widely used in heat pumps and air conditioning refrigeration systems.
characteristic
Bidirectional circulation capability
Evaporation temperature range: -40 ℃ to+10 ℃.
MOP (motor overload protection) function can be provided.
Stable overheating regulation performance..
Use refrigerants such as R22, R134a, R407c, R404A/R507.
Overheating regulation
The factory set superheat is 3.5K, and the static superheat adjustment range is 2-8K. Unscrew the sealing nut and rotate the adjustment rod,
Rotate the adjustment lever clockwise once, and the degree of superheat increases by 1.5K,
Rotate the adjustment lever counterclockwise once to reduce the superheat by 1.5K.

Naming convention for NRF (E) series thermal expansion valves:
Example:


Refrigerant code:
H（R22） R（R502）
M（R134a） N（R407C） S（R404A/R507）

NRF (E) series thermal expansion valve selection table Technical data

R134a			R22			R407c			R404A/R507
Model （Model）		Nominal capacity Nominal capacity (KW)	Model （Model）		Nominal capacity Nominal capacity (KW)	Model （Model）		Nominal capacity Nominal capacity (KW)	Model （Model）		Nominal capacity Nominal capacity (KW)
RTB RTBT	1/2M	one point seven six	RTB RTBT	1H	three point five two	RTB RTBT	1N	three point five two	RTB RTBT	2/3S	two point three five
RTB RTBT	1-1/2M	five point two eight	RTB RTBT	2H	seven point zero four	RTB RTBT	2N	seven point zero four	RTB RTBT	1-1/2S	five point two eight
RTB RTBT	2M	seven point zero four	RTB RTBT	3H	ten point five six	RTB RTBT	3N	ten point five six	RTB RTBT	2S	seven point zero four
RTB RTBT	2-1/2M	eight point eight zero	RTB RTBT	4H	fourteen point zero eight	RTB RTBT	4N	fourteen point zero eight	RTB RTBT	3S	ten point five six
RTB RTBT	3M	ten point five six	RTB RTBT	5H	seventeen point six zero	RTB RTBT	5N	seventeen point six zero	RTB RTBT	3-1/2S	twelve point three two
RTB RTBT	4M	twelve point three two	RTB RTBT	6H	twenty-one point one two	RTB RTBT	6N	twenty-one point one two	RTB RTBT	4S	fourteen point zero eight
RTB RTBT	5-1/2M	nineteen point three six	RTB RTBT	7-1/2H	twenty-six point four zero	RTB RTBT	7-1/2N	twenty-six point four zero	RTB RTBT	5S	seventeen point six zero
RTB RTBT	7-1/2M	twenty-six point four zero	RTB RTBT	10H	thirty-five point two zero	RTB RTBT	10N	thirty-five point two zero	RTB RTBT	7S	twenty-four point six four
RTB RTBT	9M	thirty-one point six eight	RTB RTBT	12H	forty-two point two four	RTB RTBT	12N	forty-two point two four	RTB RTBT	8-1/2S	twenty-nine point nine two

Note: The nominal cooling capacity is based on an evaporation temperature of te=4.4 ℃, a condensation temperature of tc=40 ℃, and a refrigerant temperature in front of the valve of t1=37.8 ℃.

Dimensions of external dimensions