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Backflow valve

4

Backflow valve for sale on largest auction and classifieds sites

Home / / Backflow valve refurbished & used for sale | For Sale USA
975xl2 reduced - 34-975xl2,

975xl2 reduced - 34-975xl2,

$295.00
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Watts bbfp inch ips - watts, 1/2

Watts bbfp inch ips - watts, 1/2

$39.95
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350 double check - 1-350, backflow

350 double check - 1-350, backflow

$138.00
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Watts double check - 1”,

Watts double check - 1”,

$157.98
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350 double check - double,

350 double check - double,

$110.40
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720a pressure vacuum - 720a,

720a pressure vacuum - 720a,

$65.40
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350 double check backflow - 1-350,

350 double check backflow - 1-350,

$138.00
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Rpz backflow preventer - 3/4,

Rpz backflow preventer - 3/4,

$150.00
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Ames 2000b double - ames,

Ames 2000b double - ames,

$249.00
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Watts automatic fill valve - valve, and

Watts automatic fill valve - valve, and

$20.00
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Watts double check - watts,

Watts double check - watts,

$159.95
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For pvb backflow preventer - for,

For pvb backflow preventer - for,

$75.90
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Watts bronze double - 1,

Watts bronze double - 1,

$174.99
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Watts bronze quarter - bronze,

Watts bronze quarter - bronze,

$149.95
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Watts b911s comb fill - comb,

Watts b911s comb fill - comb,

$174.99
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Watts bronze double - watts, 1

Watts bronze double - watts, 1

$189.99
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Zurn dual check - dual, valve

Zurn dual check - dual, valve

$35.99
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Pvc white plastic solvent - plastic,

Pvc white plastic solvent - plastic,

$23.99
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Backflow preventer valve 4 - backflow, valve,4

Backflow preventer valve 4 - backflow, valve,4

$79.86
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New watts 007m1 double - watts, 1"

New watts 007m1 double - watts, 1"

$139.95
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Watts bronze double - 3/4, in.

Watts bronze double - 3/4, in.

$154.89
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720a pressure vacuum - pressure,

720a pressure vacuum - pressure,

$83.40
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Tondiamo backwater valve - tondiamo,

Tondiamo backwater valve - tondiamo,

$49.45
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Watts 007m3 4 in - 007m3-qt-fz,

Watts 007m3 4 in - 007m3-qt-fz,

$139.99
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M3 backflow preventer - 1/2",

M3 backflow preventer - 1/2",

$26.95
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Zurn wilkins 950xlt2 - zurn,

Zurn wilkins 950xlt2 - zurn,

$194.97
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Watts bronze quarter - 1,

Watts bronze quarter - 1,

$153.99
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Watts double check - 3/4,

Watts double check - 3/4,

$139.99
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350 double check - 34-350,

350 double check - 34-350,

$159.99
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Apollo valves 4alf205a2f - apollo,

Apollo valves 4alf205a2f - apollo,

$494.99
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975xl2 reduced - 34-975xl2, 3/4"

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

$300.00
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Watts bronze quarter turn - 1”,

Watts bronze quarter turn - 1”,

$225.00
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Watts bronze double - 3/4",

Watts bronze double - 3/4",

$184.95
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Complete repair kit - 3/4"-1",

Complete repair kit - 3/4"-1",

$20.19
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Watts double check valve - watts,

Watts double check valve - watts,

$164.88
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Watts bronze quarter - watts, in.

Watts bronze quarter - watts, in.

$197.88
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For watts 0061888 - for,

For watts 0061888 - for,

$69.50
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Inch backflow valve - 1,

Inch backflow valve - 1,

$23.89
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Watts 007 double - 007, check

Watts 007 double - 007, check

$294.60
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Watts lfn9 lead free - watts,

Watts lfn9 lead free - watts,

$200.00
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350 double check backflow - 1-350,

350 double check backflow - 1-350,

$99.00
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Inch lead brass check - no-lead,

Inch lead brass check - no-lead,

$24.80
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Backflow preventer - 1/2,

Backflow preventer - 1/2,

$35.90
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Watts bronze pressure - watts,

Watts bronze pressure - watts,

$299.95
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Watts double check - double, valve

Watts double check - double, valve

$154.99
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Fip white plastic pvc inline - white,

Fip white plastic pvc inline - white,

$15.99
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Pvc 6in backwater check valve - pvc,

Pvc 6in backwater check valve - pvc,

$95.95
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New watts 800m4qt - watts, pressure

New watts 800m4qt - watts, pressure

$89.00
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Watts 1in bronze double check - 1in.bronze,

Watts 1in bronze double check - 1in.bronze,

$164.99
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Backwater valve drain - backwater,

Backwater valve drain - backwater,

$60.63
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Sentinel drain guard sewage - sentinel,

Sentinel drain guard sewage - sentinel,

$24.99
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Inch one way spring check - inch,

Inch one way spring check - inch,

$14.57
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Watts bronze double - in.,

Watts bronze double - in.,

$194.99
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Brass female thread spring - thread,

Brass female thread spring - thread,

$36.06
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Febco 1313 860 - 1", reduced

Febco 1313 860 - 1", reduced

$269.95
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Yahe hvac 920d inlet - yahe,

Yahe hvac 920d inlet - yahe,

$20.00
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Backflowgage 5 valve - backflowgage, tk-15

Backflowgage 5 valve - backflowgage, tk-15

$329.99
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Backwater valve drain - backwater,

Backwater valve drain - backwater,

$38.23
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For 720a pressure vacuum - for,

For 720a pressure vacuum - for,

$72.99
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Inch pvc backwater - 2,

Inch pvc backwater - 2,

$30.74
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Ames colt 200 2 - ames,

Ames colt 200 2 - ames,

$1099.00
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Midline valve 4i2t112 pvc - midline,

Midline valve 4i2t112 pvc - midline,

$17.53
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Brass dual check valve - dual,

Brass dual check valve - dual,

$35.00
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Zurn wilkins 2 - zurn, 2-950xlt2

Zurn wilkins 2 - zurn, 2-950xlt2

$850.00
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Zurn wilkins double check - double,

Zurn wilkins double check - double,

$128.00
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Pvc backwater valve 3 inch - backwater,

Pvc backwater valve 3 inch - backwater,

$42.43
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Yahe 920d hvac backflow - yahe,

Yahe 920d hvac backflow - yahe,

$29.69
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Brass dual check backflow - dual,

Brass dual check backflow - dual,

$38.41
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Inch pvc backwater - inch, valve

Inch pvc backwater - inch, valve

$34.99
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White pvc backwater - ​4',

White pvc backwater - ​4',

$62.37
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975xl2 reduced - 34-975xl2,

975xl2 reduced - 34-975xl2,

$320.00
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Pressure vacuum breaker - 3/4",

Pressure vacuum breaker - 3/4",

$60.00
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Febco backflow lf850 qt - 3/4", lf850-qt

Febco backflow lf850 qt - 3/4", lf850-qt

$130.00
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Inch backflow valve - 1,

Inch backflow valve - 1,

$23.99
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For watts 0061888 3 - watts,

For watts 0061888 3 - watts,

$69.49
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720a pressure vacuum - 1",

720a pressure vacuum - 1",

$65.89
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Watts m3 backflow - watts,

Watts m3 backflow - watts,

$85.00
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Zurn wilkins 950xlt2 double - wilkins,

Zurn wilkins 950xlt2 double - wilkins,

$173.21
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Zurn wilkins 760 inch - wilkins,

Zurn wilkins 760 inch - wilkins,

$39.95
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Backflow preventer dual - preventer,

Backflow preventer dual - preventer,

$60.99
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Pack dn25 brass - 2,

Pack dn25 brass - 2,

$15.59
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Zurn wilkins 975xl2 4 - 34-975xl2, 3/4"

Zurn wilkins 975xl2 4 - 34-975xl2, 3/4"

$500.00
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New zurn wilkins 950xl3 2 - 1, 1/2"

New zurn wilkins 950xl3 2 - 1, 1/2"

$527.99
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One way vertical brass - one,

One way vertical brass - one,

$12.98
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Febco 1in bronze - (2), 1in.bronze

Febco 1in bronze - (2), 1in.bronze

$189.99
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Oatey pvc backwater - 4,

Oatey pvc backwater - 4,

$35.99
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New watts 4 bronze - new, 3/4"bronze

New watts 4 bronze - new, 3/4"bronze

$164.99
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Brass check valve - valve, inch

Brass check valve - valve, inch

$20.44
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For watts 0061888 3 - for,

For watts 0061888 3 - for,

$69.99
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2pcs shower floor drain - shower,

2pcs shower floor drain - shower,

$17.07
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2pcs brass oneway - 2pcs,

2pcs brass oneway - 2pcs,

$14.90
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800m4 vent float repair - float,

800m4 vent float repair - float,

$10.29
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Watts lead free brass - watts, lead-free

Watts lead free brass - watts, lead-free

$39.99
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Watts lf007m1qt lead - watts, free

Watts lf007m1qt lead - watts, free

$349.00
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Zurn wilkins 350 double - zurn,

Zurn wilkins 350 double - zurn,

$170.00
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Watts backflow preventer - 1, in.

Watts backflow preventer - 1, in.

$199.95
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📊96 listings · from $10.29 · avg $141.95

Browse 96 backflow valve listings currently in our index. Prices range from $10.29 to $1099, with an average of $141.95. 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 valve →

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Everything you need to know about backflow valve

Whether you are looking for a brand-new or second-hand backflow valve, 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 $10.29, while premium listings can reach $1099 — giving you a wide budget spread to work with. The average price of $141.95 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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