2" NPT Horizontal Check Valve, Brass Non Return Swing Check Valve To Prevent Water Backflow, Level One Way Counterflow Valve To Prevent The Medium

3" NPT Horizontal Check Valve, Stainless Steel Non Return Swing Check Valve, Level One Way Counterflow Valve To Prevent The Medium Backflow For Oil

1-1/2" NPT Horizontal Check Valve, Brass Non Return Swing Check Valve To Prevent Water Backflow, Level One Way Counterflow Valve To Prevent The Medium

2PCS 3/4 NPT Thread Spring Check Valve, Brass Non Return One Way Horizontal Vertical Inline Water Check Valve For Well, Pump, Tank, Backflow

T&S B-CVH1-2 Horizontal Check Valve W/ 1/2" NPT Female Connection

Eastman Brass Swing Check Valve, 2 Inch IPS, Brass Plumbing Fitting, 20431LF

Boltigen 1 Inch Spring Check Valve, 304 Stainless Steel CF8 Non Return One Way Horizontal Check Valve, Vertical Inline Water Check Valve For Well,

Jomar - 105-109 - Brass Horizontal Swing Check Valve

Zurn Wilkins 1UFX1F-700XL 700XL Dual Check Valve With 1" Female Union Inlet X 1" Female Outlet

Jomar - 105-210G - Lead Free Brass Horizontal Check Valve

Pumpspy Silent Check Valve - 1-1/2" With Buna-N Couplings, Model CV-150, Spring-Loaded Flapper, Sump Pump Life Expectancy Increase, Includes Steel