{"product_id":"mastercool-a-c-system-flush-kit-91046-a-flush-gun-with-36in-hose-33oz-canister-90-150-psi","title":"Mastercool A\/C System Flush Kit 91046-A, Flush Gun with 36in Hose \u0026 33oz Canister, 90–150 PSI","description":"\u003cb\u003eThe Mastercool 91046-A A\/C System Flush Kit is a ready-to-use professional flush gun set designed to purge refrigerant oil, debris, and sludge from A\/C components quickly and safely when performing retrofits or compressor replacements.\u003c\/b\u003e\n\n\u003cp\u003eThe 91046-A kit combines a robust flush gun, a 36-inch hose, a 33 oz. aluminum canister and an adapter to give automotive and HVAC\/R technicians a durable, shop-ready solution for component flushing. Built to run on standard shop air at 90–150 PSI, it accepts any lightweight flush solvent that can be mixed with pressurized air (solvent sold separately). This kit focuses on cleaning condensers, evaporators, and hoses to help reduce contamination during repairs or system retrofits.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the kit prepare an A\/C system for a compressor replacement?\u003c\/h3\u003e\n\u003cp\u003eWhen replacing a compressor, removing residual oil and debris from lines and heat exchangers prevents contamination of the new compressor and improves service reliability. The flush gun fires solvent mixed with shop air at controlled pressure through each component, pushing contaminants out of the circuit so you can evacuate and recharge the system cleanly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse on condensers, evaporators and hoses — not compressors or expansion devices.\u003c\/li\u003e\n  \u003cli\u003eOperates at 90–150 PSI for high-velocity solvent flow.\u003c\/li\u003e\n  \u003cli\u003eIncludes a 36\" hose to reach tight service locations comfortably.\u003c\/li\u003e\n  \u003cli\u003e33 oz. aluminum canister holds solvent for multiple component flushes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat safety and usage limits should a technician observe?\u003c\/h3\u003e\n\u003cp\u003eThe tool is engineered for professional shops but has clear limits: do not exceed the 150 PSI maximum rating and never flush compressors, expansion valves, filter-driers, or accumulators. Always follow the solvent manufacturer's instructions and local regulations for handling and disposing of used solvent and contaminated waste.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMax rated pressure: 150 PSI — do not exceed.\u003c\/li\u003e\n  \u003cli\u003eOperating range recommended: 90–150 PSI for consistent results.\u003c\/li\u003e\n  \u003cli\u003eDo not use on expansion devices, or internal compressor parts.\u003c\/li\u003e\n  \u003cli\u003eFlush solvent is not included; pick a compatible product such as Mastercool 91049 series.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich refrigerant systems and solvents are compatible with the 91046-A?\u003c\/h3\u003e\n\u003cp\u003eThe kit works with systems charged with common refrigerants including R134a, R1234yf, R12, R22 and R410a because it simply delivers a pressurized solvent\/air mixture — compatibility depends mainly on the solvent selected. Choose a lightweight, air-mixable flush solvent rated for the refrigerant and materials in the system to avoid chemical incompatibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with R134a, R1234yf, R12, R22 and R410a systems.\u003c\/li\u003e\n  \u003cli\u003eAccepts any lightweight solvent that mixes with compressed air.\u003c\/li\u003e\n  \u003cli\u003eMastercool 91049 line recommended for compatible solvent options.\u003c\/li\u003e\n  \u003cli\u003eAlways verify solvent compatibility with seals, hoses, and lubricants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and how does it simplify shop workflow?\u003c\/h3\u003e\n\u003cp\u003eThe kit ships with the flush gun assembly, a 36-inch flexible hose for reach, a 33 oz. reusable aluminum canister, and a canister adapter. Because it’s a dedicated hardware package, technicians can start flushing without fabricating fittings or hunting for adapters, reducing job setup time and minimizing tool-related downtime.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: flush gun, 36\" hose, 33 oz aluminum canister, canister adapter.\u003c\/li\u003e\n  \u003cli\u003eNo gauges or electronics — simpler maintenance and fewer failure points.\u003c\/li\u003e\n  \u003cli\u003eDurable construction meant for repeated shop use.\u003c\/li\u003e\n  \u003cli\u003ePair with Mastercool solvents for a complete flushing solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Mastercool 91046-A kit is aimed at professional automotive and HVAC\/R technicians, fleet maintenance shops, and service centers that perform refrigerant system retrofits, compressor changes, or component overhauls. It’s best for technicians who need a rugged, portable flushing tool that integrates with standard shop air and allows selection of the solvent chemistry appropriate for each job. Not intended for flushing internal compressor components, expansion valves, or disposable filtration devices.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include flush solvent?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The 91046-A includes only the hardware; choose a compatible solvent such as Mastercool 91049 series.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this kit on compressors or expansion valves?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Do not flush compressors, expansion valves, or filter-driers with this tool.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Mastercool","offers":[{"title":"Default Title","offer_id":55171462496599,"sku":"B000HAUXLE","price":81.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/mastercool-flush-kit-front-view.jpg?v=1790446337","url":"https:\/\/britishgarage.co.uk\/products\/mastercool-a-c-system-flush-kit-91046-a-flush-gun-with-36in-hose-33oz-canister-90-150-psi","provider":"British Garage","version":"1.0","type":"link"}