For Sale USA

Backflow valve

4

Backflow valve for sale on largest auction and classifieds sites

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

350 double check backflow - double,

$138.00
Buy It Now

» View on eBay #sponsored
975xl2 reduced - 3/4",

975xl2 reduced - 3/4",

$280.25
Buy It Now

» View on eBay #sponsored
Watts double check valve - double,

Watts double check valve - double,

$157.98
Buy It Now

» View on eBay #sponsored
Backflow preventer valve - 4",

Backflow preventer valve - 4",

$79.86
Buy It Now

» View on eBay #sponsored
Watts union backflow - 1/2,

Watts union backflow - 1/2,

$48.99
Buy It Now

» View on eBay #sponsored
350 double check - 34-350, 3/4"

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

$60.30
Buy It Now

» View on eBay #sponsored
Watts bronze double - watts, 1”

Watts bronze double - watts, 1”

$145.00
Buy It Now

» View on eBay #sponsored
For pvb backflow preventer - pvb,

For pvb backflow preventer - pvb,

$77.90
Buy It Now

» View on eBay #sponsored
720a pressure vacuum - 3/4",

720a pressure vacuum - 3/4",

$60.17
Buy It Now

» View on eBay #sponsored
Watts bronze double check - watts, 1”

Watts bronze double check - watts, 1”

$30.00
Buy It Now

» View on eBay #sponsored
350 double check - check, backflow

350 double check - check, backflow

$135.00
Buy It Now

» View on eBay #sponsored
Watts bronze double - watts,

Watts bronze double - watts,

$99.99
Buy It Now

» View on eBay #sponsored
Watts b911s m3 - watts, 1/2"

Watts b911s m3 - watts, 1/2"

$169.99
Buy It Now

» View on eBay #sponsored
350 double check - 3/4",

350 double check - 3/4",

$169.99
Buy It Now

» View on eBay #sponsored
Watts bronze quarter turn - bronze,

Watts bronze quarter turn - bronze,

$225.00
Buy It Now

» View on eBay #sponsored
Watts bronze double - watts, 1

Watts bronze double - watts, 1

$189.99
Buy It Now

» View on eBay #sponsored
Complete repair kit - complete,

Complete repair kit - complete,

$22.49
Buy It Now

» View on eBay #sponsored
2pk watts lead free - 3/4, in.

2pk watts lead free - 3/4, in.

$68.99
Buy It Now

» View on eBay #sponsored
M3 backflow preventer - 9d-m3,

M3 backflow preventer - 9d-m3,

$26.95
Buy It Now

» View on eBay #sponsored
Pvc white plastic solvent - pvc,

Pvc white plastic solvent - pvc,

$23.99
Buy It Now

» View on eBay #sponsored
Yahe 920d hvac backflow - 920d,

Yahe 920d hvac backflow - 920d,

$16.14
Buy It Now

» View on eBay #sponsored
Inch one way spring check - 1,

Inch one way spring check - 1,

$14.57
Buy It Now

» View on eBay #sponsored
Dual check valve - 3/8, in

Dual check valve - 3/8, in

$400.00
Buy It Now

» View on eBay #sponsored
720a pressure vacuum - 1",

720a pressure vacuum - 1",

$79.99
Buy It Now

» View on eBay #sponsored
Rpz backflow preventer - in,

Rpz backflow preventer - in,

$175.00
Buy It Now

» View on eBay #sponsored
Watts fpt lead free dual - lead,

Watts fpt lead free dual - lead,

$45.00
Buy It Now

» View on eBay #sponsored
Zurn wilkins 950xl double - zurn, 1”

Zurn wilkins 950xl double - zurn, 1”

$169.99
Buy It Now

» View on eBay #sponsored
Watts bronze quarter - watts,

Watts bronze quarter - watts,

$197.88
Buy It Now

» View on eBay #sponsored
Zurn wilkins 350 double - 350,

Zurn wilkins 350 double - 350,

$275.00
Buy It Now

» View on eBay #sponsored
009m3 rpz backflow - 3/4”,

009m3 rpz backflow - 3/4”,

$349.99
Buy It Now

» View on eBay #sponsored
Zurn wilkins 38ufx38f 700xl - zurn, 38ufx38f-700xl

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

$49.99
Buy It Now

» View on eBay #sponsored
975xl2 reduced - 34-975xl2, 3/4"

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

$300.00
Buy It Now

» View on eBay #sponsored
Pack dn25 brass - pack,

Pack dn25 brass - pack,

$15.45
Buy It Now

» View on eBay #sponsored
Watts 3 stainless dual - stainless,

Watts 3 stainless dual - stainless,

$175.00
Buy It Now

» View on eBay #sponsored
Zurn wilkins 350xl - 1",

Zurn wilkins 350xl - 1",

$319.48
Buy It Now

» View on eBay #sponsored
Zurn wilkins 350xl - 1,

Zurn wilkins 350xl - 1,

$199.00
Buy It Now

» View on eBay #sponsored
Febco 1313 860 - , 1"

Febco 1313 860 - , 1"

$269.95
Buy It Now

» View on eBay #sponsored
Zurn dual check valve - zurn, in.

Zurn dual check valve - zurn, in.

$35.99
Buy It Now

» View on eBay #sponsored
Watts b911s comb fill - watts,

Watts b911s comb fill - watts,

$174.99
Buy It Now

» View on eBay #sponsored
Watts backflow preventer - watts,

Watts backflow preventer - watts,

$239.95
Buy It Now

» View on eBay #sponsored
Zurn wilkins 975xl2 - wilkins, 2-975xl2

Zurn wilkins 975xl2 - wilkins, 2-975xl2

$899.00
Buy It Now

» View on eBay #sponsored
Yahe hvac 920d inlet - yahe,

Yahe hvac 920d inlet - yahe,

$25.00
Buy It Now

» View on eBay #sponsored
Watts bronze quarter - bronze,

Watts bronze quarter - bronze,

$153.99
Buy It Now

» View on eBay #sponsored
Pcs 2 inch - 1-1/2, backwater

Pcs 2 inch - 1-1/2, backwater

$30.92
Buy It Now

» View on eBay #sponsored
Pvc 6in backwater check - pvc,

Pvc 6in backwater check - pvc,

$95.95
Buy It Now

» View on eBay #sponsored
For pvb backflow preventer - for,

For pvb backflow preventer - for,

$77.09
Buy It Now

» View on eBay #sponsored
Inch pvc backwater valve - pvc,

Inch pvc backwater valve - pvc,

$34.99
Buy It Now

» View on eBay #sponsored
Zurn wilkins double - double, check

Zurn wilkins double - double, check

$209.99
Buy It Now

» View on eBay #sponsored
350 double check backflow - 1-350,

350 double check backflow - 1-350,

$102.00
Buy It Now

» View on eBay #sponsored
White pvc backwater - pvc,

White pvc backwater - pvc,

$62.37
Buy It Now

» View on eBay #sponsored
Watts bronze double - watts,

Watts bronze double - watts,

$179.88
Buy It Now

» View on eBay #sponsored
Backflow preventer valve 4 - backflow, valve,4

Backflow preventer valve 4 - backflow, valve,4

$68.81
Buy It Now

» View on eBay #sponsored
Watts 994 994rpda relief - watts,

Watts 994 994rpda relief - watts,

$895.00
Buy It Now

» View on eBay #sponsored
Watts bronze double - 3/4,

Watts bronze double - 3/4,

$154.89
Buy It Now

» View on eBay #sponsored
Inch lead brass check - no-lead,

Inch lead brass check - no-lead,

$24.80
Buy It Now

» View on eBay #sponsored
Watts double check valve - 1,

Watts double check valve - 1,

$164.88
Buy It Now

» View on eBay #sponsored
Thickened brass backflow - brass,

Thickened brass backflow - brass,

$65.18
Buy It Now

» View on eBay #sponsored
Backflow preventer 1 - backflow,

Backflow preventer 1 - backflow,

$15.81
Buy It Now

» View on eBay #sponsored
Backflow protector duckbill - backflow,

Backflow protector duckbill - backflow,

$18.59
Buy It Now

» View on eBay #sponsored
Zurn wilkins 350xl - zurn, 1-350xl

Zurn wilkins 350xl - zurn, 1-350xl

$149.99
Buy It Now

» View on eBay #sponsored
Febco 1in bronze - 1in.,

Febco 1in bronze - 1in.,

$97.89
Buy It Now

» View on eBay #sponsored
Brass dual check - 1/2", backflow

Brass dual check - 1/2", backflow

$34.14
Buy It Now

» View on eBay #sponsored
Watts automatic fill valve and - automatic,

Watts automatic fill valve and - automatic,

$20.00
Buy It Now

» View on eBay #sponsored
Watts pressure zone valve - 1",

Watts pressure zone valve - 1",

$179.99
Buy It Now

» View on eBay #sponsored
Zurn wilkins 975xl2 - zurn, 3/4"

Zurn wilkins 975xl2 - zurn, 3/4"

$449.00
Buy It Now

» View on eBay #sponsored
Febco 1in bronze - (2), pressure

Febco 1in bronze - (2), pressure

$189.99
Buy It Now

» View on eBay #sponsored
Midline valve 4i2t112 - midline, pvc

Midline valve 4i2t112 - midline, pvc

$17.53
Buy It Now

» View on eBay #sponsored
Wilkins zurn npt backflow - wilkins, 3/4

Wilkins zurn npt backflow - wilkins, 3/4

$83.99
Buy It Now

» View on eBay #sponsored
Febco backflow lf850 qt - febco, lf850-qt

Febco backflow lf850 qt - febco, lf850-qt

$130.00
Buy It Now

» View on eBay #sponsored
Pack dn25 brass foot - brass,

Pack dn25 brass foot - brass,

$15.85
Buy It Now

» View on eBay #sponsored
Watts bronze double - in.,

Watts bronze double - in.,

$179.99
Buy It Now

» View on eBay #sponsored
Watts 007m1 fz double - watts, 007m1-qt-fz

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

$149.95
Buy It Now

» View on eBay #sponsored
Pack anti backflow valve - 2-pack, anti-backflow

Pack anti backflow valve - 2-pack, anti-backflow

$17.56
Buy It Now

» View on eBay #sponsored
Inch m3 backflow - 1/2,

Inch m3 backflow - 1/2,

$34.38
Buy It Now

» View on eBay #sponsored
Watts lfu5b 2 - watts, 1/2

Watts lfu5b 2 - watts, 1/2

$325.00
Buy It Now

» View on eBay #sponsored
New 375a zurn - 3",

New 375a zurn - 3",

$3359.99
Buy It Now

» View on eBay #sponsored
Febco bronze pressure - febco,

Febco bronze pressure - febco,

$88.99
Buy It Now

» View on eBay #sponsored
Pcs npt thread - pcs,

Pcs npt thread - pcs,

$37.20
Buy It Now

» View on eBay #sponsored
Watts sd3 dual check - watts, 3/8

Watts sd3 dual check - watts, 3/8

$179.99
Buy It Now

» View on eBay #sponsored
Watts 1in bronze - double, check

Watts 1in bronze - double, check

$164.99
Buy It Now

» View on eBay #sponsored
Watts 2 dual - (qty,

Watts 2 dual - (qty,

$91.79
Buy It Now

» View on eBay #sponsored
Watts bronze quarter - bronze,

Watts bronze quarter - bronze,

$184.95
Buy It Now

» View on eBay #sponsored
350 double check - double, backflow

350 double check - double, backflow

$132.95
Buy It Now

» View on eBay #sponsored
Watts regulator 007 qt - watts,

Watts regulator 007 qt - watts,

$184.99
Buy It Now

» View on eBay #sponsored
800m4 vent float repair - 800m4,

800m4 vent float repair - 800m4,

$11.49
Buy It Now

» View on eBay #sponsored
Taco 334 boiler feed - taco,

Taco 334 boiler feed - taco,

$117.53
Buy It Now

» View on eBay #sponsored
Zurn bronze full port - bronze,

Zurn bronze full port - bronze,

$64.07
Buy It Now

» View on eBay #sponsored
Fip white plastic - plastic, pvc

Fip white plastic - plastic, pvc

$15.99
Buy It Now

» View on eBay #sponsored
720a pressure vacuum - pressure,

720a pressure vacuum - pressure,

$55.99
Buy It Now

» View on eBay #sponsored
Watts double check - 3/4",

Watts double check - 3/4",

$139.99
Buy It Now

» View on eBay #sponsored
Zurn wilkins inch 350xl - zurn,

Zurn wilkins inch 350xl - zurn,

$799.95
Buy It Now

» View on eBay #sponsored
Watts bronze quarter - bronze,

Watts bronze quarter - bronze,

$199.00
Buy It Now

» View on eBay #sponsored
Watts double check valve - 1,

Watts double check valve - 1,

$199.99
Buy It Now

» View on eBay #sponsored
Brass check valve backflow - check,

Brass check valve backflow - check,

$24.80
Buy It Now

» View on eBay #sponsored
Watts m3 backflow - watts,

Watts m3 backflow - watts,

$90.13
Buy It Now

» View on eBay #sponsored
Watts lf009m2 female rpz - lf009m2-qt, 2"

Watts lf009m2 female rpz - lf009m2-qt, 2"

$269.99
Buy It Now

» View on eBay #sponsored

Looking for more backflow valve?

Search eBay live — fresh results filtered for the best value, updated every hour.

🔍 Search live deals
📊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 →

Try this: philippine airlines | heating units | carpenters axe | bunnies mini rex | thermostatic valve | cardboard tubes | matchbox track | wooden duck | s 2000 500 motor mercedes | cayman r

Shop by budget

< $25 $25 – $50 $50 – $100 $100 – $200 $200 – $500 > $500

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 $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.

🔍 backflow valve Search live on eBay