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That makes perfect sense and is clearly the best and most pro way. But I got 40 years out of the existing upside down valves. I am 67 now and if I can get 20 more years without turning the battle into a war….

Thank you, it’s helpful to know that configuration is possible, I was not sure. I going to order male mip vs compression to start with.

Hi and thanks for your reply. The nut at top of photo is as high as can be seen. It goes up against the top of the metal washer, valve and drain discharge box and then drywall above. I don’t understand “compression fitting then pipe thread”. Can male pipe thread go into a compression fitting...

That is part of my uncertainty. The valves were installed by a licensed professional plumber @40 years ago. I think the threads have teflon tape and/or thread compound on them. That makes me think i need male Pipe thread versus compression. But, the large nut at top has that beveled appearance...

Hmmm. I included a photo of one of the existing valve in my original post above. Here it is again. (hot and cold valves are the same)

Hi. I have old gate valves on the supply to our washing machine. See attached photo. I want to replace them with new ball valve’s. I am not 100% sure if I should order compression fitting or MIP. I see the pipe dope on the threads and so I am thinking MIP but the nut looks like it may be a...

Hi. I have old gate valves on the supply to our washing machine. See attached photo. I want to replace them with new ball valve’s. I am not 100% sure if I should order compression fitting or MIP. I see the pipe dope on the threads and so I am thinking MIP. I am thinking of ordering the valves...

More info from Zurn In case anyone else may find this useful. As pointed out by Reach4 in post above I have a 600XL body. The 600 is cast into the main body part, see photo above. The metal tag that is attached has the model# 610XL etched on it. The 610XL rebuild kit will work in the 600XL...

That is very interesting. Also very cool you pointed out that the casting on my PRV shows 600. I will call Zurn in the morning to follow up on all this. Thanks x 10 for your help!

The kit for the 600 is apparently a bit different. But whoever the distributor gets it from, Zurn?, said no problem for them to turn a 600 kit into a 610 kit. i "think" the only difference is the spring. The 610 has a pressure range of 10-125. The 600 doesn't go that high.

thanks again! after talking w zurn (very helpful), they make a RK34-610XL repair kit. Called nearest distributer (1.5 hours away). They got on with their supplier. None available nationaly. They can make one from the new kit that will work with my older model. $105. Sheesh! that's what I'm going...

Hi and thanks for your reply. The model # is etched into the tag and very difficult to make out but it appears to be 610 ULR. Other tag info, Man. Date - 0617, Range 10-125, Max Inlet - 400 The closest one I can find is this...

Hi. I'm an infrequent forum user but when I've needed DIY plumbing help or advice this forum is my go to place and it's always delivered. Very helpful and generous at al times. I am sorry to read news of Terry Love's passing and my thoughts go out to you. I hope it's OK to post my question here...

Thanks again for your expert and knowledgable discussion of this! You clearly possess a lot of detailed and specific knowledge about these products, systems and more. Are you an engineer of some type?

If I do pipe the furnace intake to the outside as planned, so I can close off my crawl space vents, I am concerned about the effect of that on the crawl space. I don't want to create a condensation/mold type issue. This is a very dry climate and the crawl space is very dry. Radon may also be a...

The foundation walls are insulted with rigid foam, but I think it's only like 1.5" or maybe 2" can't remember. R maybe 10. It was a long time ago. I could go look and verify but you get the idea. Crawl space floor is unfortunately dirt and very uneven with lots of big rocks. Wish I had done a...

Wow Dana. Very thorough discussion. When I built the addition in 1986 the code was for R30 in roofs. Now everyone uses spray in foam and I don't know what r-value they achieve but it's high. Also eliminates the need for venting the rafter spaces. Like you , I like to be thorough and if I'm...

Dana, you rock! All the info I wanted to know and more. Very helpful, Thanks! I’m not sure what stack effect is, but I’m going to learn more about it and will seal off the B vent at both open ends in the attic. The attic is a “cold roof” so the attic isn’t actually vented. The vent space is...

No, the furnace gets it’s combustion air from the crawl space. The crawl space is vented as stated above. I show the attic photo so you can see where the combustion air pipe would come up to and turn out thru the wall and exit as shown in outside photo. The pipe is 3” all the way, not sure...

I recently had my older 80% efficient gas furnace replaced with a new 98% efficient furnace. The furnace is located in an unheated 18' x 30' crawl space. The crawl space is vented to the outside with two 6 x 14 vents at opposite corners of the crawl space. The old furnace used combustion air...