NRF、RT系列热力膨胀阀
概述
NRF/RT系列热力膨胀阀是一体式膨胀阀,适用与空调、商业制冷、运输空调及冷冻等领域。
General
NRF/RT series TXV are hermetic valves for the application of air conditioning, commercial ref and transportation A/C and Ref.
特点
l稳定的过热度调节性能。
l蒸发温度范围: -40℃~+10℃。
l可提供MOP(马达过载保护)功能。
l可更换进口滤网。
l使用R22, R134a, R407C, R507/404A 冷媒等介质。
Characteristics
lConstant super-heat adjusting performance.
lEvaporator temperature range: -40℃~+10℃.
lWith MOP function.
lChangeable inputing filter net.
lSuitting for R22, R134a, R407C, R507/404A.
过热度调节
旋下密封螺帽,旋转调节杆,顺时针转动调节杆一圈,过热度增加1.5℃,逆时针转动调节杆一圈,过热度减少1.5℃。出厂过热度设定为3.5℃,静过热度调节范围2~8℃。
Super-heat adjusting
Take off cap and turn adjusting stem.Turn adjusting stem clockwise one round,reduces super-heat 1.5℃.Set super-heat 3.5℃ when exit factory.Static super-heat adjusting range is 2~8℃.
选型表格Technical Data
R134a | R22 | R407C | R404A/R507 | ||||||||
型号 (Model) | 名义容量 Norminal capacity (KW) | 型号 (Model) | 名义容量 Norminal capacity (KW) | 型号 (Model) | 名义容量 Norminal capacity (KW) | 型号 (Model) | 名义容量 Norminal capacity (KW) | ||||
NRF RT | 1/4M | 1.1 | NRF RT | 1/2H | 1.76 | NRF RT | 1/2N | 1.67 | NRF RT | 1/3S | 1.27 |
NRF RT | 1/2M | 2.2 | NRF RT | 1H | 3.52 | NRF RT | 1N | 3.34 | NRF RT | 2/3S | 2.50 |
NRF RT | 1M | 4.4 | NRF RT | 1-1/2H | 5.28 | NRF RT | 1-1/2N | 5.0 | NRF RT | 1S | 3.80 |
NRF RT | 1-1/2M | 6.6 | NRF RT | 2H | 7.03 | NRF RT | 2N | 6.67 | NRF RT | 1-1/2S | 5.06 |
NRF RT | 2M | 8.8 | NRF RT | 3H | 10.5 | NRF RT | 3N | 10.0 | NRF RT | 2S | 7.60 |
NRF RT | 3M | 13.2 | NRF RT | 5H | 17.6 | NRF RT | 5N | 16.7 | NRF RT | 3S | 12.7 |
NRF RT | 5-1/2M | 19.3 | NRF RT | 7-1/2H | 26.3 | NRF RT | 7-1/2N | 25.0 | NRF RT | 5S | 18.9 |
NRF RT | 7-1/2M | 26.3 | NRF RT | 10H | 35.0 | NRF RT | 10N | 33.2 | NRF RT | 7S | 25.2 |
NRF RT | 9M | 31.5 | NRF RT | 12H | 42.0 | NRF RT | 12N | 39.9 | NRF RT | 8-1/2S | 30.3 |
注:名义制冷量是基于蒸发温度4.4℃,进入阀门的温度为37.8℃的不带蒸汽的液体制冷剂。
Note:Nominal capacities are based on 4.4℃evaporator temperature and 37.8℃vapor-free liquid refrigerant entering the valve.
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