Feelers 1/4" One Way Inline Check Valve Non-Return One-Way Air Water Gas Check Valve Ozone Resistance PVDF, Pack of 4 4PCS

05 Rockwood. When I would turn on city water. Water would pour out the back under neath overflow. The water pump for the holding tank has an internal check valve that failed so I put this in the line and fixed it.

I used these with a chunk of hose to perform a solo brake bleed. Worked perfectly.

The price is really good for the amount of them you receive but the the quality definitely shows for the price you pay. So if you want something more durable I recommend spending a few more but if you looking for a quick fix and quantity then this I definitely recommend:)

Does not reliably work. Sometimes yes, sometimes no. Get a better product if it's to be part of an important system.

Used to replace an "OEM" one in the spa ozonator line going to the venturi tee. Been working for a month. Not sure if better than name brand or not, or why original failed. Regardless, I reconfigured it as per the ozonator mfr recommends [ozonator>check valve>Hartford Loops>tee]. It was installed originally [ozonator>Hartford Loops>check valve>tee]. The tee was also right above the valve, so maybe the chlorinated water dripping down affected the check valve and caused it to stick closed.

Item was returned did not use

One way valves for my rv water pump and street inlet water both malfunctioned, meaning water could travers both directions. Putting these in line on both hoses solved the issue, and saved some money in doing so. Pump work fine, believe stilling in the Texas hot sun damaged the one-way valve.

Check valve was easy to install on my condensate pump installed with my 96% furnace in the basement. Locks water upstream pass valve excellently. A steal for the price. It was the exact 3/8 size I needed. Performance is wonderful for being all plastic.