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  • The industry standard for flushing refrigeration and air conditioning systems
  • Ideal for system clean-up after burnouts
  • Cleaning is fast, efficient and verifiable
  • Flush line sets for R-410A conversions
  • A2L Ready


Rx11-flush is a unique solvent that has been engineered for flushing refrigeration and air conditioning systems. Its patented HFC based solvent formulation is powerful enough to flush away sludge, carbon residue, oils, acids, water and other particulate. This makes it ideal for system flushing after burnouts, retrofits and for flushing line sets for R-410A conversions. It is non-toxic, non-flammable and is non-ozone depleting.

Packaging Size Part Number Additional Info
Starter Kit 4300-08 1 lb. can, hose, gun, valve
1 lb. canister 4300-09 Flushes 3-4 tons
2 lb. canister 4300-11 Flushes 5-7 tons
2+1 Display Pack 4300-10 2 - 2 lb. can and valve
13 lb. cylinder 4300-15 Flushes up to 50 tons
26 lb. cylinder 4300-26 Flushes over 50 tons
Flushing Tool 4300-50
Rx11-Flush Gun 4300-51
Rx11-Flush Hose (24") 4300-52
Injection Valve 4300-89


This product must be used in accordance to the following directions by HVACR professionals only.

General Guidelines

  1. Use only the appropriate refrigerant, proper recovery equipment, component parts, tools and lubricants as established in the industry and as listed in this service bulletin.
  2. Do not inject the solvent into the compressor itself; only the supporting refrigeration system should be flushed.
  3. Large systems or systems with unusual configurations that could trap the solvent should be disassembled and flushed section by section.
  4. The exact amount of Rx11-flush required will vary by the internal design of the system, the nature of the system failure, the degree of contamination trapped in the system, and the temperatures at which the failure occurred.
  5. If the system to be flushed includes larger components such as a receiver we recommend a visual inspection. If these components appear to be contaminated, and are small enough to be flushed with Rx11-flush, then do so. If they are too large to economically flush with Rx11-flush, then the use of a traditional degreasing solvent, such as Degreasing Solvent ef (Part No. 4162-07) should be considered for them.
  6. DANGER: Never connect this canister to nitrogen via manifold sets or other charging hoses! Failure to insure system is free of pressure when injecting Rx11-flush may cause the can to burst and result in injury.

For additional instructions, please click on the "Product Information" tab and download Rx11-flush product bulletin 3-112.

Product Information:

Literature Downloads

Download the product bulletin and other relevant literature here.


Download a low resolution file of the product label here.

Product Safety

RTK Information

2611 Schuetz Rd. St. Louis, MO 63043
  • Telephone: 800.554.5499
  • Email:
  • Hours: Mon–Fri: 8:00am - 5:00pm (Central Time)

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