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Back flow preventer valve

(260 products available)

Backflow Preventer Insulation Cover Back flow Valve Cover for Winter Pipe Freeze Protection Multi-use Waterproof Cover

$5.32-6.12
Shipping per piece: $2.93
Min. Order: 300 pieces

905-212 Bonnet Repair kit Replacement for Febco #765 PVB 1" & 1-1/4" Vacuum Breakers & Back Flow Preventer

Ready to Ship
$3.20-4.00
Shipping per piece: $0.48
Min. Order: 100 pieces

hot sale light weight simple female threaded vertical check valve with strainers one way check valves to prevent back flow

$1.20-3.60
Min. Order: 2000 pieces

JU 3mm Tubing Vacuum Pump Silicone One Way Duckbill Diaphragm Plastic Check Valve

Ready to Ship
$0.85-1.30
Shipping per piece: $0.65
Min. Order: 25 pieces

BSP NPT Thread 3/4" Brass Swing Check Valve Horizontal One-Way Non Return Foot Valve for Water System

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$2.90-3.30
Min. Order: 3000 pieces

1/8 Inch 3.2mm Plastic Equal Hose Barb Tubing Fitting Low pressure Duckbill Valve Non Return One Way Check Valve

$0.75-1.30
Min. Order: 25 pieces

China factory 3/4" to 6" PVC-U flap disc swing check valve mini plastic none return check one way valve backflow preventer

$1.21
Shipping per piece: $36.90
Min. Order: 100 pieces

Fiberglass Flap Valve (FRP/GRP) for Drain Water Back Flow HDPE FRP Fish Pond Drainage Gate

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$49.00-50.00
Shipping per piece: $36.90
Min. Order: 1 set