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Backflow preventer

4

Backflow preventer for sale on largest auction and classifieds sites

Home / Plumbing & Fixtures / Backflow preventer refurbished & used for sale | For Sale USA
975xl2 reduced - 34-975xl2, 3/4"

975xl2 reduced - 34-975xl2, 3/4"

$280.25
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350 double check - double, backflow

350 double check - double, backflow

$138.00
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Zurn wilkins 975xl2 - wilkins, 2"

Zurn wilkins 975xl2 - wilkins, 2"

$925.00
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Sandbaggy durable backflow - sandbaggy,

Sandbaggy durable backflow - sandbaggy,

$820.50
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Zurn wilkins 975xl2 1 - zurn,

Zurn wilkins 975xl2 1 - zurn,

$510.00
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Watts bronze double - bronze,

Watts bronze double - bronze,

$147.50
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Watts bbfp inch ips - 1/2,

Watts bbfp inch ips - 1/2,

$39.95
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Febco 1in bronze pressure - (2),

Febco 1in bronze pressure - (2),

$189.99
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Febco watts bronze - febco, pressure

Febco watts bronze - febco, pressure

$102.00
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350 double check - 1-350,

350 double check - 1-350,

$138.00
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Steel high capacity - steel, 1/2"

Steel high capacity - steel, 1/2"

$26.99
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Inch ips backflow - 1/2,

Inch ips backflow - 1/2,

$22.66
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720a pressure vacuum - 720a,

720a pressure vacuum - 720a,

$60.17
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Zurn wilkins 350 double - zurn, 1”

Zurn wilkins 350 double - zurn, 1”

$170.00
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975xl2 reduced - 34-975xl2,

975xl2 reduced - 34-975xl2,

$300.00
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Backflow preventer security - backflow,

Backflow preventer security - backflow,

$350.00
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720a pressure vacuum - pressure,

720a pressure vacuum - pressure,

$66.00
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Zurn wilkins 350xl - zurn, in.

Zurn wilkins 350xl - zurn, in.

$156.99
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Watts double check valve - double,

Watts double check valve - double,

$159.95
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Zurn wilkins 975xl2 4 - wilkins, 3/4"

Zurn wilkins 975xl2 4 - wilkins, 3/4"

$449.00
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Febco 1in bronze pressure - febco,

Febco 1in bronze pressure - febco,

$99.99
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Febco 765 qt fz - febco, 3/4"

Febco 765 qt fz - febco, 3/4"

$79.99
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Febco bronze pressure - 3/4,

Febco bronze pressure - 3/4,

$84.99
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Febco 1in bronze pressure - 1in.,

Febco 1in bronze pressure - 1in.,

$99.99
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Zurn wilkins 350xl - zurn, 3/4”

Zurn wilkins 350xl - zurn, 3/4”

$140.00
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Watts bronze backflow - watts,

Watts bronze backflow - watts,

$345.00
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Watts bronze pressure - 1",

Watts bronze pressure - 1",

$109.95
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Watts 009m3 qt backflow - watts, 009m3-qt

Watts 009m3 qt backflow - watts, 009m3-qt

$399.00
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350 double check - 34-350,

350 double check - 34-350,

$159.99
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Zurn wilkins 375 - 1",

Zurn wilkins 375 - 1",

$349.49
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Zurn wilkins 975xl2 - wilkins, 1/2”

Zurn wilkins 975xl2 - wilkins, 1/2”

$300.00
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Wilkins 975xl2 in - 34-975xl2, rpz

Wilkins 975xl2 in - 34-975xl2, rpz

$375.00
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Zurn wilkins 950xlt2 - in.,

Zurn wilkins 950xlt2 - in.,

$269.99
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Rpz backflow preventer - rpz,

Rpz backflow preventer - rpz,

$150.00
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Watts regulator backflow - watts,

Watts regulator backflow - watts,

$249.99
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Febco 860 rp reduced - 1",

Febco 860 rp reduced - 1",

$362.65
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Watts 009m2 qt reduced - watts, 1-1/2"

Watts 009m2 qt reduced - watts, 1-1/2"

$799.99
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Febco 1in bronze pressure - 1in.,

Febco 1in bronze pressure - 1in.,

$97.89
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Watts regulator 009 - watts,

Watts regulator 009 - watts,

$200.00
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Watts lf009m3 4 in rpz - watts,

Watts lf009m3 4 in rpz - watts,

$380.00
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Watts 007m2 2 double - watts, 1-1/2"

Watts 007m2 2 double - watts, 1-1/2"

$550.00
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Zurn wilkins 975xl rpz - zurn,

Zurn wilkins 975xl rpz - zurn,

$395.00
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Watts reduced pressure - 3/4",

Watts reduced pressure - 3/4",

$250.00
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Zurn wilkins 2in 975xl reduced - zurn,

Zurn wilkins 2in 975xl reduced - zurn,

$900.00
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Watts bronze reduced - in.,

Watts bronze reduced - in.,

$347.88
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Febco bronze pressure - febco, in.

Febco bronze pressure - febco, in.

$99.50
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350 double check backflow - 1-350,

350 double check backflow - 1-350,

$99.00
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Zurn wilkins 975xl3 rpz - zurn,

Zurn wilkins 975xl3 rpz - zurn,

$100.00
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Zurn wilkins double check - wilkins,

Zurn wilkins double check - wilkins,

$178.49
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Zurn wilkins 350 double - 1”,

Zurn wilkins 350 double - 1”,

$169.95
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Watts bronze double - watts, in.

Watts bronze double - watts, in.

$194.99
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Bronze pressure vacuum - 3/4,

Bronze pressure vacuum - 3/4,

$49.99
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Watts bronze reduced - 1,

Watts bronze reduced - 1,

$299.99
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Pvc backflow preventer - pvc,

Pvc backflow preventer - pvc,

$50.36
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Zurn wilkins 975xl2 4 - zurn, 3/4"

Zurn wilkins 975xl2 4 - zurn, 3/4"

$255.00
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Watts double check valve - watts, in.

Watts double check valve - watts, in.

$164.88
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Watts bronze double - 3/4,

Watts bronze double - 3/4,

$154.89
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Dual check valve fip - dual,

Dual check valve fip - dual,

$16.99
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Apollo double check - in,

Apollo double check - in,

$150.00
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For watts 0061888 - for,

For watts 0061888 - for,

$69.50
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Watts 99e backflow - watts,

Watts 99e backflow - watts,

$300.00
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975xl reduced - 975xl,

975xl reduced - 975xl,

$227.95
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Zurn wilkins 975xl - zurn,

Zurn wilkins 975xl - zurn,

$280.00
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Apollo valves 4alf205a2f - apollo,

Apollo valves 4alf205a2f - apollo,

$494.99
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Dual check valve backflow - 3/4",

Dual check valve backflow - 3/4",

$51.95
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Zurn wilkins 950xl double - zurn,

Zurn wilkins 950xl double - zurn,

$161.49
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Zurn wilkins 112 350xl 2 - zurn, 1-1/2"

Zurn wilkins 112 350xl 2 - zurn, 1-1/2"

$739.00
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Adapters winterize blow out - winterize,

Adapters winterize blow out - winterize,

$11.99
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Watts bronze double - 3/4",

Watts bronze double - 3/4",

$184.95
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Tondiamo backwater valve - in.,

Tondiamo backwater valve - in.,

$48.23
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Zurn wilkins 975xl2 - wilkins,

Zurn wilkins 975xl2 - wilkins,

$78.00
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For pvb backflow preventer - 1",

For pvb backflow preventer - 1",

$75.90
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Pack inch ght - 3/4,

Pack inch ght - 3/4,

$17.99
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Watts lf7ru2 dual check - 1”,

Watts lf7ru2 dual check - 1”,

$80.00
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Zurn wilkins 950xlt2 double - 950xlt2,

Zurn wilkins 950xlt2 double - 950xlt2,

$194.97
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Watts double check - 3/4,

Watts double check - 3/4,

$139.99
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Zurn wilkins 975xl - zurn, 3/4"

Zurn wilkins 975xl - zurn, 3/4"

$349.99
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Watts 007m1 in double - 1,

Watts 007m1 in double - 1,

$160.00
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Watts lf009 2 - 2, 2"

Watts lf009 2 - 2, 2"

$924.00
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720a pressure vacuum - 1",

720a pressure vacuum - 1",

$65.89
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Water heater backflow - water,

Water heater backflow - water,

$13.99
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Raven backflow preventer - preventer, 1/2"

Raven backflow preventer - preventer, 1/2"

$21.99
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Watts bronze reduced - 1, in.

Watts bronze reduced - 1, in.

$269.40
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Watts 800m4 pressure - 800m4-qt, 3/4”

Watts 800m4 pressure - 800m4-qt, 3/4”

$90.19
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Watts 719qt series - watts,

Watts 719qt series - watts,

$99.99
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Zurn wilkins 975xl2 - zurn,

Zurn wilkins 975xl2 - zurn,

$449.00
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Watts 800m4 pressure - 800m4-qt, 3/4”

Watts 800m4 pressure - 800m4-qt, 3/4”

$90.19
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Zurn 950xl double check - zurn, 1"

Zurn 950xl double check - zurn, 1"

$317.74
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Watts lead free - watts, 3/4

Watts lead free - watts, 3/4

$39.99
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Watts lf009m3 qt - 1/2", lf009m3-qt-fs

Watts lf009m3 qt - 1/2", lf009m3-qt-fs

$232.23
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Zurn wilkins double check - zurn,

Zurn wilkins double check - zurn,

$495.00
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Watts backflow preventer - tk-9a,

Watts backflow preventer - tk-9a,

$200.00
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Backflow preventer valve 4 - backflow,

Backflow preventer valve 4 - backflow,

$79.86
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Sentinel drain guard sewage - guard,

Sentinel drain guard sewage - guard,

$24.99
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Watts backflow preventer - in.,

Watts backflow preventer - in.,

$199.95
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Watts bronze quarter turn - quarter,

Watts bronze quarter turn - quarter,

$225.00
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📊96 listings · from $11.99 · avg $229.58

Browse 96 backflow preventer listings currently in our index. Prices range from $11.99 to $925, with an average of $229.58. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about backflow preventer →

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Everything you need to know about backflow preventer

Whether you are looking for a brand-new or second-hand backflow preventer, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $11.99, while premium listings can reach $925 — giving you a wide budget spread to work with. The average price of $229.58 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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