AC Dye Oil Injector Backflow Prevent Kit, HVAC Dye Oil Injector with R134A Snap Quick Coupler, R1234YF Low Side Quick Coupler, R410 Mini Split Adapter for R134A R22 R12 R410 R1234YF Refrigerant System - Boltigen, ODI

• 【AC Oil Dye Injector】Professional automotive air conditioner compressor A/C dye oil injector with capacity 1/4 oz/7.5ml---2oz/60ml, for injecting oil and dye through low pressure suction side into the air conditioner compressor, the 1/4 SAE port with backflow protection. 【Refrigerant Adapters】R134A low side quick coupler with 1/4’’ SAE male x 13mm female, Blue Low side R1234yf coupler with 14 mm female x 1/4"SAE male, R410a mini split adapter with 5/16’’ SAE Female to 1/4’’ SAE Male. 【Application】 AC dye injector kit with R134A and R1234YF low side port quick coupler, R410a refrigerant hose adapter, compatible with fluorescent dyes for leak monitoring, all oil types(POE, or mineral oil) and all home office AC and car AC systems. 【How To Use】Oil cylinder of refrigerant oil injector is filled with 2 ounces of refrigeration oil, check valve screwed onto cartridge and tightened. The inner and outer cylinders are tightened clockwise, and then a little 1/4 SAE threaded inner core is used to discharge a little air inside the blue tube. Connect the low-pressure port of the refrigeration system that needs to be refueled, and add the required amount of cooling oil to the inner and outer cylinders. 【Guarantee】The 12 months free worry is guaranteed, If any question when you buy or use our AC oil dye injector tool, please feel free to contact us, our customer service will reply you within 24 hours.