{"product_id":"otoolling-mini-split-adapter-90-anti-blowback-2-pack-brass-with-knurled-grip","title":"Otoolling Mini Split Adapter 90° Anti-Blowback, 2-Pack Brass with Knurled Grip","description":"\u003cp\u003e\u003cstrong\u003eOtoolling's 90° Anti Blowback Mini Split Adapter is a two-piece brass coupling that lets you safely connect 1\/4\" HVAC service hoses to 5\/16\" mini split service ports while reducing refrigerant spray and backflow.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact 90-degree adapter set is built for HVAC technicians and DIYers working on mini split systems (R410A\/R32). Each adapter combines a 1\/4\" SAE male fitting with a 5\/16\" SAE female port, a knurled grip for positive handling, and an anti-blowback valve that helps contain refrigerant when disconnecting hoses. The pair is designed to speed up service work in tight spaces while minimizing refrigerant loss and exposure.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the anti-blowback mechanism protect me during service?\u003c\/h3\u003e\n\u003cp\u003eThe adapter includes an internal valve that automatically snaps closed when disconnected, holding residual refrigerant in the hose rather than releasing it into the air. That action reduces sudden sprays and helps keep hands and nearby components safer during disconnects. It does not replace safe handling practices or PPE.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic shutoff valve limits refrigerant escape\u003c\/li\u003e\n  \u003cli\u003eReduces spray when disconnecting under pressure\u003c\/li\u003e\n  \u003cli\u003eHelps protect fingertips from cold burns caused by escaping gas\u003c\/li\u003e\n  \u003cli\u003eWorks on both charging and vacuuming operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these adapters fit my mini split and standard HVAC hoses?\u003c\/h3\u003e\n\u003cp\u003eYes — each brass adapter is fitted with a 1\/4\" SAE male thread on one end and a 5\/16\" SAE female connection on the other, matching common mini split service ports and standard HVAC hoses. They are intended for use with refrigerants like R410A and R32. Always confirm thread types and system compatibility before use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4\" SAE male to 5\/16\" SAE female configuration\u003c\/li\u003e\n  \u003cli\u003eCompatible with most mini split service ports and hoses\u003c\/li\u003e\n  \u003cli\u003eSuitable for common refrigerants such as R410A and R32\u003c\/li\u003e\n  \u003cli\u003eBrass construction for reliable thread engagement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and easy to handle are these adapters?\u003c\/h3\u003e\n\u003cp\u003eConstructed from quality brass, the adapters resist corrosion and provide long-term service life in HVAC environments. The exterior knurled pattern gives a firm, non-slip grip for finger-tight or hand-assisted turns, while the yellow finish helps parts stand out on a crowded tool tray. Their compact 90° profile makes access simpler in cramped installation locations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid brass body for durability and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eKnurled grip for secure handling without tools\u003c\/li\u003e\n  \u003cli\u003e90° angle simplifies connections in tight spaces\u003c\/li\u003e\n  \u003cli\u003eDistinctive yellow finish for easy identification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance or precautions should I follow?\u003c\/h3\u003e\n\u003cp\u003eInspect O-rings and valve seats before each use and replace any damaged seals to maintain leak-free service. Use appropriate personal protective equipment and follow refrigerant-handling regulations; the anti-blowback feature helps reduce exposure but is not a substitute for safe practice. Store the adapters clean and dry to preserve brass finish and valve function.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck seals and valves before connecting to a system\u003c\/li\u003e\n  \u003cli\u003eWear gloves and eye protection when handling refrigerants\u003c\/li\u003e\n  \u003cli\u003eDo not rely solely on the valve—vent and service according to guidelines\u003c\/li\u003e\n  \u003cli\u003eKeep dry and clean when stored to prevent debris from affecting the valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Otoolling 2-piece 90° anti blowback adapter set is aimed at HVAC technicians, mini split installers, and competent DIYers who service R410A\/R32 mini split systems and need compact, reliable fittings to reduce refrigerant loss and simplify hose connections in confined areas. Buy it when you want a durable brass coupling that improves safety and handling during charging, pressure checks, evacuations, and routine maintenance.\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: Are these adapters compatible with R410A mini split systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Otoolling adapters fit common mini split service ports and are suitable for R410A and R32 refrigerants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the anti-blowback valve stop all refrigerant leaks?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The valve reduces spray and backflow during disconnects but you should still follow safe refrigerant handling and inspect seals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Otoolling","offers":[{"title":"Default Title","offer_id":55167750537559,"sku":"B0H4QWQW3P","price":42.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/otoolling-front-view-adapter-pair.jpg?v=1790392662","url":"https:\/\/britishgarage.co.uk\/products\/otoolling-mini-split-adapter-90-anti-blowback-2-pack-brass-with-knurled-grip","provider":"British Garage","version":"1.0","type":"link"}