{"product_id":"yunziling-rv-vacuum-breaker-check-valve-571-vac-chk-a-brass-leak-prevention-for-black-tank-flushing","title":"Yunziling RV Vacuum Breaker Check Valve 571-VAC-CHK-A | Brass, Leak Prevention for Black Tank Flushing","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Yunziling 571-VAC-CHK-A is a brass vacuum breaker check valve designed for RV black water tank flushing systems. Placed between the fresh water inlet and the tank flusher, it helps protect your water lines by reducing backflow and limiting unintended mixing during a flush.\u003c\/p\u003e\n\u003cp\u003eWith rugged brass construction and practical design, this valve aims to deliver dependable performance in everyday RV use while remaining adaptable to a range of setups. It is intended as part of a reliable flushing routine, offering a potential improvement in water line protection and ease of maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose Yunziling 571-VAC-CHK-A\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrongdurable brass build:\u003e stronger than plastic in many environments, helping extend service life.\u003c\/strongdurable\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrongpressure tolerance:\u003e rated for about 8 to 125 PSI, accommodating typical RV water systems.\u003c\/strongpressure\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrongcold climate resilience:\u003e brass construction is less prone to cracking in colder conditions.\u003c\/strongcold\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrongmaintenance-friendly:\u003e a simple replacement option when a current valve leaks or fails.\u003c\/strongmaintenance-friendly:\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSimple, flexible installation\u003c\/h3\u003e\n\u003cp\u003eDesigned for straightforward integration into a caravan or trailer flushing setup, the valve should be installed 6 inches above the highest connected waste item. If you’re unsure about the install, consulting a professional plumber is advisable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstronguniversal fit:\u003e works across most caravans, campers, and travel trailers.\u003c\/stronguniversal\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePractical placement:\u003c\/strong\u003e ensures proper gravity and clearance in the flush line.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUpgrade option:\u003c\/strong\u003e a reliable alternative to ruptured or leaking valves in the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat to expect in daily use\u003c\/h3\u003e\n\u003cp\u003eIn routine RV flushing, the brass vacuum breaker can help maintain flow integrity and reduce the chance of backflow into the freshwater line. While results can vary by setup, the valve offers a practical shield against back-siphon risks and reduces the likelihood of unwanted cross-connection during routine maintenance.\u003c\/p\u003e\n\u003cp\u003eThink of this valve as a thoughtful upgrade for RV water systems that may contribute to smoother maintenance days and less worry about flushing integrity, without making guarantees about outcomes.\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 does the Yunziling 571-VAC-CHK-A do in an RV flushing system?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It acts as a brass vacuum breaker in the black water tank flush line to prevent backflow, reducing cross-contamination and leaks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is installation difficult, and what should I know before buying?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The valve is designed for simple installation in caravans and trailers; install 6 inches above the highest connected waste item, and consult a plumber if unsure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Yunziling","offers":[{"title":"Default Title","offer_id":42466207236181,"sku":"B0DQ8279C4","price":34.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/yunziling-rv-vacuum-breaker-check-valve-brass-front-view.jpg?v=1778041026","url":"https:\/\/plentytorque.co.uk\/products\/yunziling-rv-vacuum-breaker-check-valve-571-vac-chk-a-brass-leak-prevention-for-black-tank-flushing","provider":"PlentyTorque","version":"1.0","type":"link"}