What is it?</br></br> If you're buying this product to add to an small holding tank for the RO system, you need to confirm your tubing first. MOST systems use 1/4 inch tubing and 1/4 threaded connector on the tank. This product has a 1/4 nptf connector which is the threaded part. The push fitting is designed for larger 3/8 inch tubing.</br> It gives full flow and positive shut off without leakage, which is very easy to install Valve act is 90 degrees, full on to full off, with no seepage</br> </br> Where to use it?</br></br> Our Shut Off Ball Valve is used to turn off the water supply to your pressure tank. Critical if you ever want to remove the tubing from the pressure tank.The Tank Shut Off Valve will thread directly onto any standard drinking water pressure tank allowing you to isolate the tank for service, or simply just remove the tubing from the tank without having to fully drain the tank first.</br> </br> How to use it?</br></br> Just pop in your 3/8 inch tubing into outlet end, pushing until it won't go in. Then Screw on the threaded bottom part to the RO tank.To remove, just push in the outer circle on tubing end and pull right out. You need to make sure the tubing is cut squared to ensure no leaks. </br> </br> What you will receive?</br></br> Tank Ball Valve x5