Chris Tjoumas
New Member
Hi,
I am installing a new dishwasher and was curious if I should install a water hammer arrestor. I have cpvc running through the house and had seen that this may not require a water hammer, but the builder installed one on the supply line to the dishwasher in the kitchen, so I thought I should.
Assuming I should install one, I wanted to know if there is a specific way of doing it. Right now, there is a shutoff valve with one outlet where the hot supply for the faucet is connected to. The pipe from the wall is about halfway up the cabinet. In my kitchen, the supply lines come from the bottom of the cabinet, so the arrester comes out horizontally and then a pipe is coupled out of the top of that T so it goes straight up and then a shutoff is installed. So for this cabinet, I was thinking of having a T on the pipe from the wall so that one end faces the front of the cabinet where I’ll instal the shutoff for the faucet and then the other end would face to the right towards the dishwasher. From there, I was thinking of using a coupling to extend out a few inches and putting a T there with one end facing to the right towards the dishwasher where I’d install the hammer and the other end facing up where I’d put an inch or so coupling going straight up to the sink and install a shutoff there for the dishwasher.
Hopefully that all makes sense. A couple of questions: 1) when making the first coupling to go towards the dishwasher for the arrestor and shutoff, does it need to be any specific distance apart from the faucet shutoff 2) on the last T where I add a vertical coupling to go up, does it matter if it goes up (arrestor then shutoff above) or down (arrestor then shutoff below)?
Thank you!
I am installing a new dishwasher and was curious if I should install a water hammer arrestor. I have cpvc running through the house and had seen that this may not require a water hammer, but the builder installed one on the supply line to the dishwasher in the kitchen, so I thought I should.
Assuming I should install one, I wanted to know if there is a specific way of doing it. Right now, there is a shutoff valve with one outlet where the hot supply for the faucet is connected to. The pipe from the wall is about halfway up the cabinet. In my kitchen, the supply lines come from the bottom of the cabinet, so the arrester comes out horizontally and then a pipe is coupled out of the top of that T so it goes straight up and then a shutoff is installed. So for this cabinet, I was thinking of having a T on the pipe from the wall so that one end faces the front of the cabinet where I’ll instal the shutoff for the faucet and then the other end would face to the right towards the dishwasher. From there, I was thinking of using a coupling to extend out a few inches and putting a T there with one end facing to the right towards the dishwasher where I’d install the hammer and the other end facing up where I’d put an inch or so coupling going straight up to the sink and install a shutoff there for the dishwasher.
Hopefully that all makes sense. A couple of questions: 1) when making the first coupling to go towards the dishwasher for the arrestor and shutoff, does it need to be any specific distance apart from the faucet shutoff 2) on the last T where I add a vertical coupling to go up, does it matter if it goes up (arrestor then shutoff above) or down (arrestor then shutoff below)?
Thank you!