{"product_id":"robinair-r-134a-charging-hoses-set-of-2-20-ft-red-blue-enviro-guard-low-permeation-500-psi","title":"Robinair R-134a Charging Hoses Set of 2, 20 ft Red\/Blue — Enviro-Guard Low-Permeation, 500 psi","description":"\u003cp\u003e\u003cstrong\u003eRobinair 64240 Enviro-Guard hoses are a pair of 20-foot, low-permeation R-134a service hoses built for high-pressure automotive refrigerant charging.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese red and blue 240\" (20') hoses are designed for technicians who need a durable, long-life connection when servicing R-134a automotive systems. They combine a flexible Enviro-Guard barrier that minimizes refrigerant loss with rugged hardware — 14 mm male to 1\/2\" ACME female fittings and a heavy six-sided crimp — so the set withstands everyday shop use and retains reliability under pressure.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these hoses reduce refrigerant loss during service?\u003c\/h3\u003e\n\u003cp\u003eThe Enviro-Guard construction uses a special internal barrier that resists permeation while keeping the hose flexible. That means far less refrigerant migration compared with standard hoses over time, which helps maintain system charge and reduces waste.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBarrier material formulated for minimal R-134a permeation\u003c\/li\u003e\n  \u003cli\u003eStill flexible for routing around engine compartments\u003c\/li\u003e\n  \u003cli\u003eMarked specifically for R-134a to prevent cross-use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre they strong enough for high-pressure A\/C work?\u003c\/h3\u003e\n\u003cp\u003eYes — the hoses are rated for a 500 psi working pressure and a 2500 psi burst pressure. The hose-to-barb connection uses a six-sided crimp that secures the fitting under maximum loads, and the metal fittings are machined for reliable sealing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e500 psi working pressure for routine service\u003c\/li\u003e\n  \u003cli\u003e2500 psi burst rating for safety margin\u003c\/li\u003e\n  \u003cli\u003eSix-sided crimp for consistent mechanical retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fittings and features make them easy to use in the shop?\u003c\/h3\u003e\n\u003cp\u003eEach hose has brass 14 mm male to 1\/2\" ACME female fittings to mate with common service ports and gauges. The coupler nuts are deeply knurled to allow quick finger-tightening and a positive grip, so connections are fast and secure without tools in many situations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e14 mm male x 1\/2\" ACME female fittings for broad compatibility\u003c\/li\u003e\n  \u003cli\u003eDeeply knurled coupler nuts for quick hand tightening\u003c\/li\u003e\n  \u003cli\u003eClear red and blue coloring and R-134a markings to prevent mix-ups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long will these hoses last under regular use?\u003c\/h3\u003e\n\u003cp\u003eRobinair manufactures these charging hoses for extended service life by combining a low-permeation core with robust external construction and quality fittings. Proper handling and storage will maximize longevity, but the design targets professional workloads in automotive and related mobile HVAC-R applications.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium materials selected for durability and low permeation\u003c\/li\u003e\n  \u003cli\u003eStrong brass fittings resist corrosion and wear\u003c\/li\u003e\n  \u003cli\u003e20-foot length reduces the need to move vehicle or equipment during service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Robinair Enviro-Guard 64240 hose set is intended for professional automotive technicians, independent repair shops, fleet maintenance teams, and experienced DIYers who work on R-134a systems and need long, flexible hoses with low refrigerant loss and secure fittings. If you require reliable, shop-grade charging lines with clear service identification and high pressure ratings, this set provides a cost-effective, long-lasting solution.\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: What refrigerant are these hoses for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: They are specifically marked and constructed for use with R-134a automotive refrigerant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the pressure ratings?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Working pressure is 500 psi and the burst pressure is 2500 psi.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Robinair","offers":[{"title":"Default Title","offer_id":48081470980254,"sku":"B00BD9OQG6","price":365.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/robinair-enviro-guard-front-view.jpg?v=1785806155","url":"https:\/\/northtrailauto.ca\/products\/robinair-r-134a-charging-hoses-set-of-2-20-ft-red-blue-enviro-guard-low-permeation-500-psi","provider":"North Trail Auto","version":"1.0","type":"link"}