Homewerks VCKP40E5B PVC Schedule 40, 1-Inch In-Line Check Valve, X Solvent, 1 Inch, White

Kuliairu 3/4" NPT Brass In-Line Vertical Check Valve, Thread Female One Way Backflow Preventer Check Valve, 3/4" Check Valve, 200WOG

Sump Pump Check Valve 1 1/2 Inch-Silent Check Valve With Spring-Loaded Flapper, Check Valve For Backflow Prevention, Includes Steel Clamps Fit 1-1/2

GASHER 5PCS Brass Check Valve 1/2" Male To 1/2" Female Thread, Backflow Prevention, Non Return One Way Check Valves

EVIL ENERGY 3/8" Fuel Check Valve One Way Inline Non Return Diesel Gasoline black(10mm OD,4PCS)

Eastman Brass Swing Check Valve, 3/4 Inch Copper Sweat, Brass Plumbing Fitting, 20443LF

Podavelle 5/8" Non Return One Way Inline Check Valve Fitting Aluminum Black