{"product_id":"r134a-universal-charging-hose-with-gauge","title":"R134a Universal Charging Hose with Gauge | Resealable \u0026 Piercing Valve Cans — Refrigerant Inc","description":"\u003ch2\u003eR134a Universal Charging Hose with Gauge — Resealable \u0026amp; Piercing Valve Cans\u003c\/h2\u003e\n\n\u003cp\u003eA universal R134a charging hose with built-in pressure gauge, compatible with both resealable valve cans and traditional piercing valve cans. The integrated gauge lets you monitor low-side system pressure while charging — a significant advantage over a hose without a gauge, as it helps you avoid overcharging and confirm the system is operating in the correct pressure range.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible refrigerant:\u003c\/strong\u003e R134a\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCan compatibility:\u003c\/strong\u003e Resealable valve cans AND traditional piercing valve cans\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Standard R134a low-side (1\/4\" SAE with low-side coupler)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGauge:\u003c\/strong\u003e Included — monitors low-side system pressure during charging\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy the Gauge Matters\u003c\/h2\u003e\n\u003cp\u003eCharging by pressure rather than by can count is significantly more accurate. R134a low-side pressure is affected by ambient temperature — at 90°F ambient, correct low-side pressure is roughly 40–45 PSI at idle; at 70°F it's lower. The gauge lets you stop charging when the system is properly charged rather than guessing based on how much refrigerant you've added.\u003c\/p\u003e\n\n\u003ch2\u003eWith Gauge vs. Without Gauge\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWith gauge (this product)\u003c\/strong\u003e — Monitor pressure in real time; avoid overcharging; more accurate and professional result\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/r134a-universal-charging-hose-resealable-piercing\"\u003eWithout gauge\u003c\/a\u003e — Lower cost; suitable when you have a separate gauge or just need a simple top-off hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan this be used with R1234yf?\u003c\/strong\u003e\u003cbr\u003e\nNo. R1234yf requires a dedicated incompatible fitting. See our \u003ca href=\"\/products\/1234yf-universal-charging-hose-with-gauge\"\u003e1234yf charging hose\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat pressure should I charge R134a to?\u003c\/strong\u003e\u003cbr\u003e\nLow-side pressure targets vary with ambient temperature. As a general guide: roughly 25–45 PSI low-side at idle with AC on max and blower on high, varying with ambient temp. Always refer to a vehicle-specific pressure chart for accurate targets.\u003c\/p\u003e","brand":"Refrigerant Inc","offers":[{"title":"Default Title","offer_id":42385469603886,"sku":null,"price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/8249\/9630\/files\/tsi_supercool_51229-3-2048x2048_grande_15ffa611-39b8-469b-8842-afd818a2ed79.jpg?v=1780159520","url":"https:\/\/www.refrigerantinc.com\/products\/r134a-universal-charging-hose-with-gauge","provider":"Refrigerant Inc","version":"1.0","type":"link"}