Litoexpe 1/2" One Way Inline Check Valve, Non Return Ozone Resistance PVDF Plastic One-Way Fuel Oil Water Gas Pump Air Check Valve, Pack of 2

I used these check valves for some pontoon vent hoses. I fabricated a pontoon pumping system and these check valves allow air to enter the pontoon when the pump is on. The whole system works great. You can see it in the pictures at the tops of the clear hoses.

Exactly what I needed

I bought these for an improvised project. They actually work AND hold pressure. Only time will tell if they will last, but for now they keep the project pressurized.

Works as described. Would buy again.

I purchased these check valves for use in my counter mounted soap dispenser line. My soap dispenser uses a tube that feeds from a bulk soap bottle located in the cabinet below the sink. My original set up used a check valve that clogged after the metal in the previous valve corroded. I do not know if this valve uses a metal to activate the valve, but time will tell if it corrodes. Have used a month and soap is flowing. I did have a terrible time inserting it into the silicon line. I would suggest selecting the next smaller size check valve OD diameter based on the ID of the tubing you plan to insert it into.

These one way valves don’t work…used it on a ac drain pump to drain. The water pumps out fine but when the pump shuts off you can see the water and air go backwards thru the valve and into the hose.

works

Great product