For this job, the customer wanted their valves to their washing machine replace. And while I was there, they asked if I could add two shut off valve underneath the washer and dryer. When I went take the I could not get to it without putting an access panel to get to it. After I informed the customer this information, the customer gave me the OK to put one in. After installing the shut off valve underneath the dryer and washer, and replaced the washing machine shut off valves, I turned the main wire back on to check for leaks, and I did not find any leakage. The washer machine system is working in normal operation.