1/2 inch Air Release Valve, NPT Thread Connection,Water Tank air Release Valve, Continuous Venting，Agricultural Industrial Exhaust equipme

I have just installed a large 2 inch water disk filter for our sprinkler system which runs off of irrigation water. Irrigation water needs to be filtered to avoid your sprinkler heads and drip emitters from clogging up. These large filters are used very often, both in residential and in agriculture, and it is recommended to install the filter upside down so maintaining and cleaning the filter is much easier.The problem mounting these filters, or any tank that contains water upside down, is the tank can trap air in the top. This air will continue to build in the top of the tank and push the water down. Eventually the air needs to be bled off so the entire filter surface can come into contact with the water again. You either need to remember to bleed off the air manually with a valve or use an automatic air release valve that works continuously. This is where the CBTLYSK Air Release Valve comes in. This valve will discharge the air automatically and continuously from all kinds of tanks, pipes, canisters, and reducing the gathering of air in the tank.This CBTLYSK Air Release Valve is well built and out of Polyamide which is basically nylon that has a long service life, is corrosion resistance, acid and alkali resistance, rugged, and durable. It can handle pressure up to 145 psi and has an insect screen in the exhaust port to keep it clean. It just needs to be installed at the highest point of the system and orientated vertically since the internal float must be in a vertical position so it can function properly to exhaust the air.I am very pleased with the size, build quality, and continuous bleed function. I made one mistake though when ordering the CBTLYSK Air Release Valve. Even though the valve body is the same, the valve comes in three different NPT thread sizes; 1/2 inch, 3/4 inch, and 1 inch. They look identical except for the thread size. I ordered the 1 inch thread but my tank canister port has 3/4 inch threads. Not a big deal, I will just put in a small PVC pipe adapter. Selecting the different thread size is not a pull down option on the Amazon CBTLYSK Air Release Valve page, each size is a different CBTLYSK listing. It is just good to pay attention to the thread size you are ordering on Amazon.Good, rugged, air release valve at a good price