Swing Check Valves

I needed to replace the check valve for my Koi pond so I went to Home Depot and purchased one. This was a spring loaded CV, so I figured no problem, the size is correct. After I installed it, I could not get my pond to pump water to my waterfall. I tried numerous things, but it was still a no go. I purchased the Swing Check Valve from Aquatic Ponds and it arrived within days. I installed the Swing CV and my pond was back up and running in no time. I didn't think a spring loaded and swing CV would make that much of a difference, but it does big time! Thanks!

Great item. Flappers are made of rubber and only last 2 years