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Back flow preventer valve

(260 products available)

male thread vertical brass check valve valve one way check valve to prevent back flow

$0.50-15.00
Min. Order: 500 pieces

3/16" Spring Check Valve with barb 4.7mm Plastic Valve Liquid Air Plastic Connector PP material KH-CSPV3 DGOzone

Ready to Ship
$0.66
Shipping per piece: $1.68
Min. Order: 10 pieces

FREE sample dn20 to dn150 kitchen sewage cut-off valves one way none return flap slip mini UPVC plastic swing check valve

$1.34-1.56
Min. Order: 500 pieces

Green Valve 3/4" Brass Swing Check Valve Horizontal One-Way Non Return Check Valve for Pipe System

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$2.90-3.30
Min. Order: 3000 pieces

Factory Copper Pipe Fittings Brass Horizontal Check Valve DN15 DN20 DN25 Gas Check Valve Solar Water Safety Valve

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$1.58-2.98
Shipping per piece: $1.93
Min. Order: 10 pieces

JU Factory Direct 3.2mm/4mm/4.8mm Tubing Vacuum Pump Silicone Duckbill One Way Valve Plastic Check Valve

$0.75-1.30
Min. Order: 25 pieces

250PSI Prevent Water Backflow 1/2" Brass T Type Swing Check Valve

$1.50-48.60
Min. Order: 1 piece

IFAN Factory Hot Sale Valve Brass Free Sample Brass Check Valve Yellow Color Brass Valve

$2.11-2.15
Min. Order: 168 pieces