The Febco Series 850 Small double-check valve assembly backflow preventers include a freeze sensor for use with SentryPlus Alert® technology to monitor temperature nearing the freezing point. Activated by an add-on connection kit, the sensor triggers alerts to help facility personnel reduce equipment damage and repair that may result from cold weather conditions. It is available for building and irrigation management systems.

Febco 850manual

Prefer to talk to a Live Person? (Reallly, a live person?) Yes! Call WHD and talk to a live person who will understand your requirements and recommend the right parts!

FEBCO 850Double Check Valve

FREQUENTLY ASKED QUESTIONS◾ Are additional items not listed on the website available?◾ How much will it cost to ship the product?

Not Sure What Part You Need? For AO Smith, State, or Lochinvar equipment, if you do not have, or do not know what part number you need, please use our Part Inquiry Form and we will help you determine the correct part for your application.

Febco 850Repair Kit

This series is designed for non-health hazard applications to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements for non-potable service applications such as irrigation, fire lines, or industrial processing. It is a standard assembly with ball valves or union-end ball valves. End connections are NPT ANSI / ASME B1.20.1.

NEWS ARTICLES◾ WHD celebrates 60 years in business!◾ WHD launches new website. Customers find items faster and save money!

The Part Inquiry form will open in a new browser tab which makes it super easy to copy details of the part you are viewing on this page onto the inquiry form!