{"id":3523,"date":"2025-06-03T10:53:08","date_gmt":"2025-06-03T14:53:08","guid":{"rendered":"https:\/\/backflow-shop.com\/?p=3523"},"modified":"2026-03-31T10:33:53","modified_gmt":"2026-03-31T14:33:53","slug":"the-hcvb-a-detail-that-protects-an-entire-network","status":"publish","type":"post","link":"https:\/\/backflow-shop.com\/en\/the-hcvb-a-detail-that-protects-an-entire-network\/","title":{"rendered":"The HCVB: A detail that protects an entire network"},"content":{"rendered":"

HCVB: A small device to avoid big problems!<\/span><\/span>\u00a0<\/span><\/h2>\n

\"\"<\/span><\/h2>\n

The HCVB, or Hose Connection Vacuum Breaker<\/a><\/strong><\/span>, is a small device that plays a crucial role: preventing water from flowing backwards in a system where a hose is connected. In other words, it protects the drinking water supply against the risks of backflow due to siphoning.<\/span><\/span>\u00a0<\/span><\/p>\n

This article highlights the importance of the HCVB, as well as the <\/span>serious consequences<\/span> that can result from neglect or improper installation.\u00a0<\/span><\/span>\u00a0<\/span> <\/span><\/p>\n

<\/h2>\n

 <\/p>\n

Why can an unprotected hose be dangerous?<\/span><\/span>\u00a0<\/span><\/span>\u00a0<\/span> <\/span><\/h2>\n

As shown in an article from the City of Lynchburg<\/span><\/span> (https:\/\/www.lynchburgva.gov\/541\/Examples-of-Backflow<\/a>), real cases of backflow have contaminated drinking water networks with chlordane (a toxic insecticide), wine, or even parasitic worms, simply because unprotected hoses are exposed to pressure fluctuations.<\/span><\/span><\/span>\u00a0<\/span><\/p>\n

And this can happen anywhere: in private residences, schools, factories, hospitals… or even in your own home.<\/span><\/span>\u00a0<\/span><\/p>\n

The remedy: a simple and inexpensive solution<\/span><\/span><\/h2>\n

Installing an HCVB is an affordable preventive measure that protects users and water networks against this type of scenario. It is particularly useful on:\u00a0<\/span><\/span><\/p>\n

    \n
  • outdoor faucets<\/span><\/span><\/li>\n
  • janitorial sinks<\/span><\/span><\/li>\n<\/ul>\n

    … locations where accidental backflow due to siphoning can occur.<\/span><\/span>\u00a0<\/span><\/p>\n

    \"\"<\/span><\/h2>\n

    However, <\/span>in accordance with<\/span> CSA B64.2, the HCVB:<\/span><\/span><\/span><\/p>\n

      \n
    • is not designed for systems under continuous pressure,<\/span><\/span>\u00a0<\/span><\/li>\n
    • does not protect against back <\/span>pressure,<\/span><\/span>\u00a0<\/span> <\/span><\/li>\n
    • is not field testable.\u00a0<\/span><\/span>\u00a0<\/span><\/li>\n<\/ul>\n

      But for short-term applications, the HCVB provides a simple and compliant solution for all types of risk levels.\u00a0<\/span><\/span>\u00a0<\/span><\/p>\n

      A tool that <\/span>remains<\/span> relevant for plumbers<\/span><\/span>\u00a0<\/span><\/span>\u00a0<\/span> <\/span><\/h2>\n

      Although it does not replace the more robust devices <\/span>required<\/span> for high-risk continuous pressure systems, the HCVB <\/span>remains<\/span> an essential tool.\u00a0<\/span><\/span>\u00a0<\/span> <\/span><\/p>\n

      It allows for:\u00a0<\/span><\/span>\u00a0<\/span> <\/span><\/p>\n

        \n
      • protect certain water points locally,<\/span><\/span>\u00a0<\/span><\/li>\n
      • add a layer of safety wherever possible,\u00a0<\/span><\/span>\u00a0<\/span><\/li>\n
      • reduce installation costs for <\/span>specific<\/span> and <\/span>well<\/span> targeted uses.<\/span><\/span>\u00a0<\/span><\/li>\n<\/ul>\n

        Not all water points present the same level of danger, and that is exactly where the HCVB proves its relevancy.<\/span><\/span>\u00a0<\/span> <\/span><\/p>\n

         <\/p>\n

        References:<\/span><\/b>\u00a0<\/span><\/p>\n

          \n
        1. Figures are taken from CSA B64.10:23 \/ CSA B64.10.1.23 and adapted for a bilingual version.<\/span><\/span>\u00a0<\/span> <\/span><\/li>\n<\/ol>\n

           <\/p>\n

           <\/p>\n","protected":false},"excerpt":{"rendered":"

          HCVB: A small device to avoid big problems!\u00a0 The HCVB, or Hose Connection Vacuum Breaker, is a small device that plays a crucial role: preventing water from flowing backwards in a system where a hose is connected. In other words, it protects the drinking water supply against the risks of backflow due to siphoning.\u00a0 This […]<\/p>\n","protected":false},"author":2,"featured_media":3519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[77],"class_list":["post-3523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products","tag-backflow-prevention-device"],"yoast_head":"\nThe HCVB: A detail that protects an entire network - Backflo Shop<\/title>\n<meta name=\"description\" content=\"Protect your water system with a HCVB: a simple, effective vacuum breaker that meets CSA B64.2 standards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/backflow-shop.com\/en\/the-hcvb-a-detail-that-protects-an-entire-network\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The HCVB: A detail that protects an entire network - 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