You can even clear away them and reuse them. Occasionally it is hard to obtain the old nut and ferrule off in the pipe; In such a case, you could take away them by using a compression sleeve puller. Compression valves are available for lower prices at most hardware merchants. https://copperelbow91419.bloggerbags.com/35529368/5-tips-about-angle-stop-shut-off-valve-you-can-use-today