点击图片查看原图
1、组成：HCFC-125（44%） HFC-134a（4%） HFC-143a（52%）
2、是替代R-502的工业标准HFC，用于全世界新型商用致冷设备。
3、适用于中低温的新型设备或更新设备
最接近于R-502的运作，甚至可以达到15ºF（-9.4ºC）或更冷。
4、为大多数的设备制造商所认同。
产品应用：
1、大型商用致冷设备使用，包括新型设备和更新设备。
2、交通运输致冷设备用。
3、适用于所有R-502可正常动作的环境。
润滑剂：
1、压缩器生产商建议使用POE多元醇酯润滑剂。
2、更新时，脂类油中应含小于5%的矿物油；通常需要多种脂类油进行清洗。 规格：10.896公斤/瓶（24磅）R404a is a blend of R-125, R-143a, and R-134a intended for low and medium temperature refrigeration applications where R-502 was previously used. Most new equipment has been built for R-404A (and R-507 interchangably). It is also possible to retrofit R-502 systems with R-404A. R-404A has slightly lower pressures than R-507 (from the small amount of R-134a added), and generally both blends have slightly higher pressures than 502. R-404A requires polyol ester (POE) lubricant, which is usually charged into new equipment. If retrofitting existing equipment the original oil must be flushed and replaced with POE.
冷库R404A