{"product_id":"boltigen-ac-dye-oil-injector-kit-low-side-hvac-backflow-preventer-with-r134a-r1234yf-r410-adapters-7-5-60-ml-dosing","title":"Boltigen AC dye oil injector kit – Low‑side HVAC backflow preventer with R134A, R1234YF \u0026 R410 adapters, 7.5–60 ml dosing","description":"\u003cp\u003e\u003cstrong\u003eThe Boltigen AC Dye Oil Injector Backflow Prevent Kit is a compact HVAC toolset for safely injecting oil and fluorescent dye into low‑pressure refrigerant lines, with adapters for R134A, R1234YF and R410 systems and a built‑in backflow check valve.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you service automotive air conditioners, home split systems or light commercial refrigeration, this kit provides a measured oil\/dye cylinder, durable fittings and three common low‑side adapters so you can introduce lubricant or tracing dye through the suction side without contaminating your recovery equipment. Components are brass, reinforced rubber hose and an anodized aluminium alloy injector body designed to resist corrosion and pressure typical of A\/C service work. The kit supports POE and mineral oils and works with most fluorescent leak detection dyes used in HVAC and automotive systems.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I connect the injector to my system?\u003c\/h3\u003e\n\u003cp\u003eAttach the correct quick coupler adapter to the low‑pressure service port, then hook the injector hose to that coupler. The kit includes an R134A 1\/4\" SAE low‑side coupler, a blue R1234YF 14 mm female coupler and an R410 mini‑split adapter; select the adapter that fits your port and ensure the check valve is tightened before introducing oil or dye.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch adapter to service port (R134A, R1234YF, R410).\u003c\/li\u003e\n  \u003cli\u003eThread the 1\/4\" SAE fittings hand‑tight, then secure with a wrench if needed.\u003c\/li\u003e\n  \u003cli\u003eConfirm backflow check valve is installed and tightened to prevent refrigerant return.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat volume and fluids can the injector handle?\u003c\/h3\u003e\n\u003cp\u003eThe injector cylinder range covers small to moderate top‑ups — from 1\/4 oz (7.5 ml) up to 2 oz (60 ml) — letting you add precise amounts of oil or dye for diagnostics and maintenance. It is compatible with common fluorescent dyes and both POE and mineral oils, making it suitable for most passenger vehicles and many HVAC units.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFillable capacity options: 7.5 ml to 60 ml for controlled dosing.\u003c\/li\u003e\n  \u003cli\u003eWorks with fluorescent leak detection dyes and lubricants (POE\/mineral).\u003c\/li\u003e\n  \u003cli\u003eNot intended as a bulk charging device; for targeted injections only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the backflow prevention and safety work?\u003c\/h3\u003e\n\u003cp\u003eThe injector uses a 1\/4\" SAE port equipped with a check valve to stop refrigerant from flowing back into the oil\/dye reservoir or the service hose. Brass fittings, reinforced rubber hose and an aluminium alloy body combine to resist corrosion and pressure, while the check valve reduces contamination risk when connecting or disconnecting under low‑side pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntegrated check valve on the 1\/4\" SAE port prevents reverse flow.\u003c\/li\u003e\n  \u003cli\u003eBrass fittings and reinforced hose for pressure and corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003eAluminium alloy injector body for lightweight durability in the field.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I operate the injector and measure the dose?\u003c\/h3\u003e\n\u003cp\u003eFill the oil cylinder with the desired amount, screw the check valve onto the cartridge, then tighten the inner and outer cylinders clockwise. Use the small 1\/4\" SAE threaded core to expel trapped air from the line; connect to the low‑pressure port and inject the required amount by manipulating the inner cylinder to push fluid into the suction side.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFill cylinder to the required mark (up to 60 ml) before attachment.\u003c\/li\u003e\n  \u003cli\u003eTighten inner\/outer cylinders clockwise to seal and prepare for dispensing.\u003c\/li\u003e\n  \u003cli\u003eUse small core to purge air, then connect to low‑side port and inject slowly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this kit is for: HVAC technicians, mobile auto A\/C specialists and DIYers comfortable with refrigeration service will benefit most from this Boltigen injector set. It’s geared toward tasks that need precise small‑volume oil or dye addition and leak tracing across passenger vehicles, mini‑split systems and many residential HVAC units. It is not a substitute for refrigeration charging stations or bulk refrigerant handling — always follow refrigerant safety and environmental regulations when servicing systems.\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: Can I use this injector with both POE and mineral oils?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Boltigen injector is compatible with POE and mineral oils and most fluorescent leak detection dyes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will the kit work on R1234YF and R410 systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It includes adapters for R1234YF low side and an R410 mini split adapter plus a standard R134A coupler.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Boltigen","offers":[{"title":"Default Title","offer_id":48083225378974,"sku":"B09VL6Q953","price":60.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/boltigen-front-packaging-injector-kit_f9ff8b0f-1d41-4344-a796-d77f447a1018.jpg?v=1785828998","url":"https:\/\/northtrailauto.ca\/products\/boltigen-ac-dye-oil-injector-kit-low-side-hvac-backflow-preventer-with-r134a-r1234yf-r410-adapters-7-5-60-ml-dosing","provider":"North Trail Auto","version":"1.0","type":"link"}