Basement watchdog, klunkless check valve, eliminates the irritating clunk when sump pumps turn off, patented silencing air chamber absorbs the shock, easily installed on both 1-1/4" & 1-1/2" pipes, includes stainless steel hose clamps.

This Basement Watchdog Klunkless Check Valve features a silencing air chamber that absorbs the shock that normally occurs after a pump shutoff. The valve installs easily on both 1-1/2 in. and 1-1/4 in. pipes with no gluing required (pipes not included). An airtight chamber helps prevent water entry.Installs easily on both 1-1/2 in. and 1-1/4 in. pipes with no gluing required (pipes not included)/Fits easily in compact spaces/Silencing air chamber absorbs the shock that normally occurs after a pump shutoff/Airtight chamber helps prevent water entry