Review on Joywayus Female Threaded Button Shutoff Valve by George Jacobson

Good product and finish. This knob is used in a custom built water dispenser for 5 gallon water bottles that operate at 60psi. If you are using a pump that turns off at 60psi and turns on at 40psi, this button will be used to pump water when pressed. I installed a built-in mechanical pressure gauge and after 4 hours there is no loss of pressure and no leaks on standby or during use. I tested several buttons and this one worked flawlessly. I highly recommend this product.