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Backflow valve

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Backflow valve for sale on largest auction and classifieds sites

Home / / Backflow valve refurbished & used for sale | For Sale USA
350 double check backflow - check,

350 double check backflow - check,

$138.00
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975xl2 reduced - 34-975xl2,

975xl2 reduced - 34-975xl2,

$280.25
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Watts double check valve - check,

Watts double check valve - check,

$157.98
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Backflow preventer valve - 4",

Backflow preventer valve - 4",

$79.86
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Watts union backflow - 1/2,

Watts union backflow - 1/2,

$48.99
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350 double check - 3/4",

350 double check - 3/4",

$60.30
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Watts bronze double check - watts, 1”

Watts bronze double check - watts, 1”

$145.00
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For pvb backflow preventer - 1",

For pvb backflow preventer - 1",

$77.90
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720a pressure vacuum - 720a,

720a pressure vacuum - 720a,

$60.17
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Watts bronze double check - watts, 1”

Watts bronze double check - watts, 1”

$30.00
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350 double check backflow - 1-350,

350 double check backflow - 1-350,

$135.00
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Watts bronze double check - bronze,

Watts bronze double check - bronze,

$99.99
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Watts b911s m3 - watts, 1/2"

Watts b911s m3 - watts, 1/2"

$169.99
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350 double check - 3/4",

350 double check - 3/4",

$169.99
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Watts bronze quarter turn - quarter,

Watts bronze quarter turn - quarter,

$225.00
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Watts bronze double - watts, in.

Watts bronze double - watts, in.

$189.99
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Complete repair kit - complete,

Complete repair kit - complete,

$22.49
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2pk watts lead free - 2pk,

2pk watts lead free - 2pk,

$68.99
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M3 backflow preventer - 1/2",

M3 backflow preventer - 1/2",

$26.95
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Pvc white plastic - pvc,

Pvc white plastic - pvc,

$23.99
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Yahe 920d hvac - 920d, backflow

Yahe 920d hvac - 920d, backflow

$16.14
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Inch one way spring - 1,

Inch one way spring - 1,

$14.57
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Dual check valve - in,

Dual check valve - in,

$400.00
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720a pressure vacuum - 1",

720a pressure vacuum - 1",

$79.99
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Rpz backflow preventer - 3/4, in

Rpz backflow preventer - 3/4, in

$175.00
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Watts fpt lead free - fpt,

Watts fpt lead free - fpt,

$45.00
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Zurn wilkins 950xl double - wilkins,

Zurn wilkins 950xl double - wilkins,

$169.99
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Watts bronze quarter - watts,

Watts bronze quarter - watts,

$197.88
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Zurn wilkins 350 double - 350,

Zurn wilkins 350 double - 350,

$275.00
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009m3 rpz backflow - rpz,

009m3 rpz backflow - rpz,

$349.99
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Zurn wilkins 38ufx38f - zurn, 38ufx38f-700xl

Zurn wilkins 38ufx38f - zurn, 38ufx38f-700xl

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

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

$300.00
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Pack dn25 brass foot - dn25,

Pack dn25 brass foot - dn25,

$15.45
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Watts 3 stainless - 3/8",

Watts 3 stainless - 3/8",

$175.00
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Zurn wilkins 350xl - 1-350xl,

Zurn wilkins 350xl - 1-350xl,

$319.48
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Zurn wilkins 350xl - zurn,

Zurn wilkins 350xl - zurn,

$199.00
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Febco 1313 860 - , reduced

Febco 1313 860 - , reduced

$269.95
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Zurn dual check - zurn,

Zurn dual check - zurn,

$35.99
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Watts b911s comb - comb, fill

Watts b911s comb - comb, fill

$174.99
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Watts backflow preventer - backflow,

Watts backflow preventer - backflow,

$239.95
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Zurn wilkins 975xl2 - wilkins, 2-975xl2

Zurn wilkins 975xl2 - wilkins, 2-975xl2

$899.00
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Yahe hvac 920d inlet - hvac, 920d:

Yahe hvac 920d inlet - hvac, 920d:

$25.00
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Watts bronze quarter - watts,

Watts bronze quarter - watts,

$153.99
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Pcs 2 inch backwater - 1-1/2,

Pcs 2 inch backwater - 1-1/2,

$30.92
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Pvc 6in backwater check valve - pvc,

Pvc 6in backwater check valve - pvc,

$95.95
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For pvb backflow - for, preventer

For pvb backflow - for, preventer

$77.09
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Inch pvc backwater valve - inch,

Inch pvc backwater valve - inch,

$34.99
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Zurn wilkins double - zurn, check

Zurn wilkins double - zurn, check

$209.99
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350 double check - 1-350,

350 double check - 1-350,

$102.00
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White pvc backwater - ​4',

White pvc backwater - ​4',

$62.37
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Watts bronze double - ,

Watts bronze double - ,

$179.88
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Backflow preventer valve - backflow, valve,4

Backflow preventer valve - backflow, valve,4

$68.81
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Watts 994 994rpda relief - watts, valve

Watts 994 994rpda relief - watts, valve

$895.00
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Watts bronze double - 3/4,

Watts bronze double - 3/4,

$154.89
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Inch lead brass check - brass,

Inch lead brass check - brass,

$24.80
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Watts double check - 1, valve

Watts double check - 1, valve

$164.88
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Thickened brass backflow - thickened,

Thickened brass backflow - thickened,

$65.18
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Backflow preventer 1 - preventer, 3/4"-1"

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

$15.81
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Backflow protector duckbill - protector,

Backflow protector duckbill - protector,

$18.59
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Zurn wilkins 350xl - wilkins, 1-350xl

Zurn wilkins 350xl - wilkins, 1-350xl

$149.99
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Febco 1in bronze pressure - 1in.,

Febco 1in bronze pressure - 1in.,

$97.89
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Brass dual check - 1/2", backflow

Brass dual check - 1/2", backflow

$34.14
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Watts automatic fill valve - fill,

Watts automatic fill valve - fill,

$20.00
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Watts pressure zone valve - watts, 1"

Watts pressure zone valve - watts, 1"

$179.99
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Zurn wilkins 975xl2 4 - zurn, 34-975xl2

Zurn wilkins 975xl2 4 - zurn, 34-975xl2

$449.00
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Febco 1in bronze pressure - 1in.bronze,

Febco 1in bronze pressure - 1in.bronze,

$189.99
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Midline valve 4i2t112 pvc - valve,

Midline valve 4i2t112 pvc - valve,

$17.53
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Wilkins zurn npt backflow - zurn,

Wilkins zurn npt backflow - zurn,

$83.99
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Febco backflow lf850 qt - febco,

Febco backflow lf850 qt - febco,

$130.00
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Pack dn25 brass foot - 1",

Pack dn25 brass foot - 1",

$15.85
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Watts bronze double - watts,

Watts bronze double - watts,

$179.99
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Watts 007m1 fz double - 007m1-qt-fz,

Watts 007m1 fz double - 007m1-qt-fz,

$149.95
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Pack anti backflow - 2-pack, anti-backflow

Pack anti backflow - 2-pack, anti-backflow

$17.56
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Inch m3 backflow - 9d-m3,

Inch m3 backflow - 9d-m3,

$34.38
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Watts lfu5b 2 in lead - lfu5b-lp-z3,

Watts lfu5b 2 in lead - lfu5b-lp-z3,

$325.00
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New 375a zurn - 3", wilkins

New 375a zurn - 3", wilkins

$3359.99
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Febco bronze pressure - febco,

Febco bronze pressure - febco,

$88.99
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Pcs npt thread - 11/2,

Pcs npt thread - 11/2,

$37.20
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Watts sd3 dual - watts,

Watts sd3 dual - watts,

$179.99
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Watts 1in bronze double check - 1in.bronze,

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

$164.99
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Watts 2 dual - 1/2",

Watts 2 dual - 1/2",

$91.79
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Watts bronze quarter - 1,

Watts bronze quarter - 1,

$184.95
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350 double check - 1-350, backflow

350 double check - 1-350, backflow

$132.95
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Watts regulator 007 qt - regulator,

Watts regulator 007 qt - regulator,

$184.99
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800m4 vent float repair kit - 800m4,

800m4 vent float repair kit - 800m4,

$11.49
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Taco 334 boiler - 334-t3,

Taco 334 boiler - 334-t3,

$117.53
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Zurn bronze full - full, port

Zurn bronze full - full, port

$64.07
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Fip white plastic pvc inline - white,

Fip white plastic pvc inline - white,

$15.99
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720a pressure vacuum - pressure,

720a pressure vacuum - pressure,

$55.99
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Watts double check valve - watts, 3/4"

Watts double check valve - watts, 3/4"

$139.99
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Zurn wilkins inch 350xl - wilkins,

Zurn wilkins inch 350xl - wilkins,

$799.95
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Watts bronze quarter - watts, 1

Watts bronze quarter - watts, 1

$199.00
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Watts double check valve - in.,

Watts double check valve - in.,

$199.99
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Brass check valve backflow - 1",

Brass check valve backflow - 1",

$24.80
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Watts m3 backflow - 9d-m3,

Watts m3 backflow - 9d-m3,

$90.13
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Watts lf009m2 female rpz - lf009m2-qt,

Watts lf009m2 female rpz - lf009m2-qt,

$269.99
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📊96 listings · from $11.49 · avg $182.12

Browse 96 backflow valve listings currently in our index. Prices range from $11.49 to $3359.99, with an average of $182.12. 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 $11.49, while premium listings can reach $3359.99 — giving you a wide budget spread to work with. The average price of $182.12 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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