{"product_id":"novino-rv-vacuum-breaker-check-valve-571-vac-chk-a-backflow-preventer-for-rv-black-tank-flush","title":"NOVINO RV Vacuum Breaker Check Valve 571-VAC-CHK-A – Backflow Preventer for RV Black Tank Flush","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eThe NOVINO RV Vacuum Breaker Check Valve (571-VAC-CHK-A) is a compact, rugged backflow preventer designed for RV black tank flush systems. It helps keep your freshwater source clean by preventing siphonage and cross-contamination during tank cleaning. If you’ve noticed loud sounds from under the sink or damp floors after flushing, this valve is positioned to address those common symptoms by stabilizing the flow and sealing against reverse flow.\u003c\/p\u003e\u003cp\u003eInstalled between the freshwater inlet and the tank flusher, the valve acts as a one-way device. Water can move toward the tank when flushing, but reverse flow is blocked, helping to maintain a stable, hygienic water supply while youCare for the tank. The design supports typical RV water pressure fluctuations and is built to perform within its specified range.\u003c\/p\u003e\u003ch3\u003eKey benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrevents backflow from the black tank flush line into the freshwater supply, protecting your drinking and cooking water.\u003c\/li\u003e\n\u003cli\u003eReduces the risk of leaks and spray that can lead to damp RV floors during tank cleaning.\u003c\/li\u003e\n\u003cli\u003eProvides a dedicated one-way valve within the flush system, contributing to overall system reliability.\u003c\/li\u003e\n\u003cli\u003eDesigned for standard 1\/2” NPT male connections on both inlet and outlet for straightforward installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications and compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part No.: 571-VAC-CHK-A\u003c\/li\u003e\n\u003cli\u003eWorking water pressure range: 8-125 PSI\u003c\/li\u003e\n\u003cli\u003eConnection Type: 1\/2” NPT male threads on both inlet and outlet\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUsage tips and real-life scenarios\u003c\/h3\u003e\u003cp\u003eIn real-world camping conditions, water pressure may vary from campsite to campsite. This valve is intended to be installed between the freshwater inlet and the black tank flusher to help maintain clean water flow and reduce backflow risk. It is appropriate for many RVs, campers, travel trailers, and motor homes, including setups from Forest River, Keystone, Winnebago, and numerous others.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIt can help address symptoms like a loud, buzzing sound under a cabinet or persistent damp floors after flushing the tank.\u003c\/li\u003e\n\u003cli\u003eIt serves as a practical upgrade when replacing cracked or leaking backflow components in the black tank flush line.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarm tips\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThe valve should be installed vertically to ensure proper sealing and odor control.\u003c\/li\u003e\n\u003cli\u003eMount at least 6 inches above the highest connected fixture where the flusher is installed.\u003c\/li\u003e\n\u003cli\u003eAvoid continuous operation beyond 12 hours to reduce the risk of sticking or shuttling.\u003c\/li\u003e\n\u003cli\u003eUse as part of a broader flush system upgrade if persistent issues persist after replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWith NOVINO, you gain a simple, targeted solution to support a healthier freshwater supply and reliable black tank flushing performance in your RV. This valve is designed to be an exact replacement where the original valve has cracked or leaked, offering a practical way to restore peace of mind during travels.\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 problem does the NOVINO RV Vacuum Breaker Check Valve solve?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It helps prevent backflow from the black tank flush line into the freshwater supply and can reduce leaks and noisy operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I install and use the valve for best results?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Install vertically, at least 6 inches above the highest fixture, and limit continuous use to under 12 hours; replace if leaking or noisy.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NOVINO","offers":[{"title":"Default Title","offer_id":42470562168917,"sku":"B0DD2N9SGQ","price":45.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/novino-rv-vacuum-breaker-check-valve_bdc20b46-d5cd-4528-9bba-5c26113555fc.jpg?v=1778135523","url":"https:\/\/plentytorque.co.uk\/products\/novino-rv-vacuum-breaker-check-valve-571-vac-chk-a-backflow-preventer-for-rv-black-tank-flush","provider":"PlentyTorque","version":"1.0","type":"link"}