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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 - 3/4",

975xl2 reduced - 3/4",

$280.25
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350 double check backflow - double,

350 double check backflow - double,

$138.00
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Watts bronze double - bronze,

Watts bronze double - bronze,

$189.99
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Watts bronze quarter turn - 1”,

Watts bronze quarter turn - 1”,

$225.00
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Watts union backflow - union,

Watts union backflow - union,

$48.99
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720a pressure vacuum - 1",

720a pressure vacuum - 1",

$66.00
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Watts b911s m3 - 1/2", b911s-m3

Watts b911s m3 - 1/2", b911s-m3

$169.99
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M3 backflow preventer - 1/2", 9d-m3

M3 backflow preventer - 1/2", 9d-m3

$26.95
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Brass backflow preventer - backflow, valve

Brass backflow preventer - backflow, valve

$23.99
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Rpz backflow preventer - 3/4, in

Rpz backflow preventer - 3/4, in

$150.00
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For pvb backflow preventer - 1",

For pvb backflow preventer - 1",

$75.90
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Backflow preventer valve - backflow,

Backflow preventer valve - backflow,

$79.86
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720a pressure vacuum - 3/4",

720a pressure vacuum - 3/4",

$60.17
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Watts lf009m2 female rpz - lf009m2-qt,

Watts lf009m2 female rpz - lf009m2-qt,

$269.99
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Zurn wilkins 350 - wilkins, double

Zurn wilkins 350 - wilkins, double

$275.00
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350 double check - 34-350, 3/4"

350 double check - 34-350, 3/4"

$169.99
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Pvc white plastic solvent - pvc,

Pvc white plastic solvent - pvc,

$23.99
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Yahe 920d hvac backflow - hvac,

Yahe 920d hvac backflow - hvac,

$17.09
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Watts bronze quarter turn - quarter,

Watts bronze quarter turn - quarter,

$179.99
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Watts lead free brass - watts, lead-free

Watts lead free brass - watts, lead-free

$39.99
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Complete repair kit - complete,

Complete repair kit - complete,

$22.49
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Watts 007m1 bronze - 1”,

Watts 007m1 bronze - 1”,

$163.49
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Zurn wilkins 950xl double - 950xl,

Zurn wilkins 950xl double - 950xl,

$169.99
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Watts double check - 1, valve

Watts double check - 1, valve

$146.81
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Wilkins zurn npt backflow - 3/4,

Wilkins zurn npt backflow - 3/4,

$83.99
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350 double check - 1-350,

350 double check - 1-350,

$135.00
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Pack dn25 brass foot - dn25,

Pack dn25 brass foot - dn25,

$15.59
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720a pressure vacuum - 720a,

720a pressure vacuum - 720a,

$50.00
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Zurn wilkins 38ufx38f 700xl - zurn,

Zurn wilkins 38ufx38f 700xl - zurn,

$49.99
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975xl2 reduced - 34-975xl2, 3/4"

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

$300.00
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Apollo valves 4alf205a2f - apollo,

Apollo valves 4alf205a2f - apollo,

$494.99
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Watts 009qt reduced - watts,

Watts 009qt reduced - watts,

$325.00
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Brass dual check valve - 1/2",

Brass dual check valve - 1/2",

$35.00
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720a pressure vacuum - 720a,

720a pressure vacuum - 720a,

$79.99
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Zurn dual check valve - dual,

Zurn dual check valve - dual,

$35.99
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Backflow preventer 1 - preventer, 3/4"-1"

Backflow preventer 1 - preventer, 3/4"-1"

$15.81
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Febco 1in bronze pressure - febco,

Febco 1in bronze pressure - febco,

$97.89
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Backflow preventer valve 4 - 4", valve,4

Backflow preventer valve 4 - 4", valve,4

$68.81
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Watts backflow preventer - backflow,

Watts backflow preventer - backflow,

$239.95
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009m3 rpz backflow - rpz,

009m3 rpz backflow - rpz,

$349.99
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Apollo pvb4a backflow - pvb4a,

Apollo pvb4a backflow - pvb4a,

$119.95
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Febco 1in bronze - febco, pressure

Febco 1in bronze - febco, pressure

$189.99
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Watts bronze quarter - in.,

Watts bronze quarter - in.,

$197.88
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Watts 3 stainless dual - 3/8",

Watts 3 stainless dual - 3/8",

$175.00
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Oatey pvc backwater - oatey, 4

Oatey pvc backwater - oatey, 4

$35.99
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Zurn wilkins 975xl2 reduced - zurn, 2-975xl2

Zurn wilkins 975xl2 reduced - zurn, 2-975xl2

$899.00
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Pcs 2 inch backwater - 1,

Pcs 2 inch backwater - 1,

$30.92
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350 double check - 1-350, backflow

350 double check - 1-350, backflow

$102.00
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Zurn wilkins 350xl - 1-350xl,

Zurn wilkins 350xl - 1-350xl,

$149.99
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Watts bronze quarter - 1,

Watts bronze quarter - 1,

$153.99
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New 375a zurn - new, 3"

New 375a zurn - new, 3"

$3569.99
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Zurn wilkins 975xl2 - zurn, 3/4"

Zurn wilkins 975xl2 - zurn, 3/4"

$449.00
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For 720a pressure vacuum - 720a,

For 720a pressure vacuum - 720a,

$72.99
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Watts bronze quarter - 1,

Watts bronze quarter - 1,

$100.00
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Fip white plastic - white, pvc

Fip white plastic - white, pvc

$8.49
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005 fits apollo - fits, backflow

005 fits apollo - fits, backflow

$37.99
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Watts fpt lead free dual - watts, 3/4

Watts fpt lead free dual - watts, 3/4

$45.00
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Watts regulator 007 qt - 1/2",

Watts regulator 007 qt - 1/2",

$184.99
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White pvc backwater - pvc,

White pvc backwater - pvc,

$62.37
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Inch pvc backwater - 2,

Inch pvc backwater - 2,

$34.99
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Febco 1313 860 reduced - febco,

Febco 1313 860 reduced - febco,

$269.95
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Inch one way spring - spring, check

Inch one way spring - spring, check

$14.57
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Pvc 6in backwater - backwater, check

Pvc 6in backwater - backwater, check

$95.95
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Watts bronze double check - 3/4",

Watts bronze double check - 3/4",

$184.95
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Zurn wilkins double check - zurn,

Zurn wilkins double check - zurn,

$209.99
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For pvb backflow preventer - pvb,

For pvb backflow preventer - pvb,

$75.09
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Watts double check valve - watts,

Watts double check valve - watts,

$164.88
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Febco backflow lf850 qt - 3/4",

Febco backflow lf850 qt - 3/4",

$130.00
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Watts b911s comb - b911s-m3,

Watts b911s comb - b911s-m3,

$174.99
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Zurn wilkins 350xl - zurn,

Zurn wilkins 350xl - zurn,

$319.48
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Inch lead brass - 1,

Inch lead brass - 1,

$24.80
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One uni lateral valve - e-one,

One uni lateral valve - e-one,

$424.58
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Backflow protector duckbill - protector,

Backflow protector duckbill - protector,

$18.59
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For watts 0061888 3 4 - 9d-m2, 3/4

For watts 0061888 3 4 - 9d-m2, 3/4

$69.49
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2pcs shower floor drain - 2pcs,

2pcs shower floor drain - 2pcs,

$17.07
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Yahe hvac 920d inlet - yahe, 920d:

Yahe hvac 920d inlet - yahe, 920d:

$25.00
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Pcs npt thread spring - npt,

Pcs npt thread spring - npt,

$37.20
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Taco 334 boiler - taco, 334-t3

Taco 334 boiler - taco, 334-t3

$111.65
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Midline valve 4i2t112 pvc - midline,

Midline valve 4i2t112 pvc - midline,

$17.53
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Zurn wilkins 950xl3 double - wilkins,

Zurn wilkins 950xl3 double - wilkins,

$299.95
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Watts automatic fill - watts, and

Watts automatic fill - watts, and

$20.00
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Watts bronze double - watts, 3/4

Watts bronze double - watts, 3/4

$154.89
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Watts bronze double - watts,

Watts bronze double - watts,

$179.88
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Watts double check valve - 1,

Watts double check valve - 1,

$189.99
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Pack dn25 brass foot - 2,

Pack dn25 brass foot - 2,

$15.85
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Rk34 375 complete - rk34-375, backflow

Rk34 375 complete - rk34-375, backflow

$47.99
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Yahe 920d hvac backflow - yahe,

Yahe 920d hvac backflow - yahe,

$29.69
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Dual check valve backflow - 3/4",

Dual check valve backflow - 3/4",

$51.95
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Zurn wilkins 975xl - zurn,

Zurn wilkins 975xl - zurn,

$399.99
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Brass check valve backflow - 1",

Brass check valve backflow - 1",

$24.80
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Watts m3 backflow - watts, 9d-m3

Watts m3 backflow - watts, 9d-m3

$90.13
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Midwest 110706 test - test, cock

Midwest 110706 test - test, cock

$231.29
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Watts 007m1 inch double - watts,

Watts 007m1 inch double - watts,

$159.00
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Thickened brass backflow - brass,

Thickened brass backflow - brass,

$71.18
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Watts bronze double - 3/4,

Watts bronze double - 3/4,

$200.00
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Watts lf009m2 female rpz - lf009m2-qt,

Watts lf009m2 female rpz - lf009m2-qt,

$385.99
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📊96 listings · from $8.49 · avg $176.57

Browse 96 backflow valve listings currently in our index. Prices range from $8.49 to $3569.99, with an average of $176.57. 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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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 $8.49, while premium listings can reach $3569.99 — giving you a wide budget spread to work with. The average price of $176.57 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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