Hi. My name is pete I'm trying to decide if I can change out the preasure valve on my house. There's two big nuts. One on top and one on the bottom. Can I just loosen these and then screw the new one on .or is there cutting involved and . Thanks

Hey Pete, Welcome to The Plumbing Page of AMHD. First we have to make sure we're on the same page. Just what kind of a pressure valve are we talking about> A PRV(pressure reducing valve coming into your house? A water heater pressure valve? Something on your pump? More details please. Back to you, Tom

Does your valve look like this Redirect Notice (http://www.google.com/imgres?imgurl=http://www.plumbersurplus.com/images/prod/6/Watts-25AUB-HP-Z3-rw-40682-3809.jpg&imgrefurl=http://www.plumbersurplus.com/Prod/Watts-Water-Pressure-Reducing-Valve-Series-25AUB-HP-Z3-1-1-4-(0079043)/40682/Cat/5&h=425&w=331&sz=20&tbnid=USHfRdAeOBlnYM:&tbnh=88&tbnw=69&prev=/search%3Fq%3Dimage%2Bof%2Ba%2Bpressure%2Breducing% 2Bvalve%26tbm%3Disch%26tbo%3Du&zoom=1&q=image+of+a+pressure+reducing+valve&docid=ecax-nhaheI0hM&hl=en&sa=X&ei=4DaKTsHPHISosQLKxY2jDw&sqi=2&ved=0CFgQ9QEwDA&dur=851)

Hello Pete,

Please respond to Tom's question and see the images below and tell us if any one of the valves looks like yours, Thanks.

John