It definitely didn’t seat like an NPT but it felt solid. Zero leaks.
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Try not to be to jealous @Steve it’s unbecoming ;>)
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Jealous? Seriously!? Why would I be Jealous!!!
Have you ever even seen my first “truck build” back in 2005? Well, feast your eyes sucker!
His overbuilt thing doesn’t even compare, lol!
Seriously, I am totally excited for Heath. It’s great to see someone with such attention to detail and such a disciplined approach to this business. I look forward to seeing his growth and success in this industry and honestly I feel we are lucky to have people like him in our business!
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Thank you @Steve I appreciate that a lot. I love the forum and everyone’s help has been absolutely amazing. I’m also starting at 40 with a career of “no mistakes or everyone dies” behind me so that seriously helped hone my focus and helped me approach this like a mission.
Today seeing the pressure on the gauge was exciting though!
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I was in on that original conversation about the threads. I almost order the adapters but decided not too after seeing that many others on here don’t. I don’t think anyone uses them. BCE doesn’t on their Hydromax washers either. Dezmar’s advice is always solid, too. When I installed my zk1 a few weeks ago I was expecting to only get a few threads but it went on plenty far to where I feel 100% confident I won’t have issues. I normally like doing things the right way regardless of cost. I just don’t feel like it’s warranted here. I do agree with you the the right way is to buy the adapters but we’re only talking a 5 degree difference in threads. I didn’t count but I’ve had NPT threads not go around as many times as the bsp to npt. I imagine that once you deform the threads they’re then npt from then on…lol. Especially if you’re going brass to steel. I thought about using a tap to see if it would help but then just figured the deformed brass would be like extra strength teflon tape. 
I’ll still admit you’re right and should use an adapter though.
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I had 1/2” fittings so my adapter was 1/2” female to 3/8” male stainless steel 5600 psi rated
Those zk1 unloaders don’t have npt fittings. They are bsp or British Standard Pipe. That’s why Jake asked how far you were able to get the threads on. They’re close to NPT but are 5 degrees off. You can thread the two but you’re actually deforming the threads. You really have to crank to get them on all the way. Jake ordered BSP to NPT adapters which is really the right way to go about it. Either way works though.
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Oh I know. It definitely wasn’t the same as NPT. Pipe wrench helped.
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My zk1 was 1/2" too. I didn’t even think about thread size when I ordered. I use 1/2" whip lines from pump to unloader and unloader to reel so I didn’t really have to adapt. PWP recommends 1/2" whips for flow but I don’t if it helps or not. Actually, I think I have a 3/8" hose to reel right now so I did have to use one reducer. I got a leak in my 1/2" due to vibration against the skid. I forgot to cut rubber hose and zip tie it as a softener around it.
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I just went through this on mine, I have a K7 with a 3 restrictor, I switched to some reinforced poly 1/4" hose and no pulsing. I guess we’ll see if it blows, got a couple of hours on it so far.
So the restrictor is used on the bypass?
@Thom I would order the #2 orifice for the K7. If you are running an 8gpm it will eventually blow that hose. I went through several different 1/4" hoses before I got the #2.
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Do you know where to order those? Can’t seem to find them.
@marinegrunt sorry meant orifice, it’s the one pressuretek sold it with.
My Pressuretek K7’s didn’t come with them. Odd.
Tested both surface cleaners.
Unloader for the 390 set for 2500 PSI. Seeing 2000 PSI running the 16” WW with 2 x 25035 tips. The SC wants to fly all over. So I’ll need a weight.
Unloader for the 690 is set to 3000 PSI. Also seeing 2000 PSI running the 19” WW Classic with 4 x 25025 tips. No flying here and the speed seems great. The 16 might have seemed to clean just a little better but maybe not.
@marinegrunt @Racer seem right?
The orifice is built into the fitting on the bypass outlet side, it should have a number stamped on it, mine just has a big 3 stamped. I guess you can order 1/2/3, and they sell it as K7.3, I heard some vendors put a #2 in the K7.3 one because of this reason. I’ve also read about people just drilling the right size hole in a cap of some sort.
Southside equipment has them. You have to call and ask for it.
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How many feet of hose you running on the 690? That seems a little low. Does that Udor only go to 3000 psi?
What I like about the ZK1, you can run a fire hose to your buffer tank if you want…It doesn’t seem to care
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200FT of hose. No it goes to 3500 I can set it higher. Just started at 3K based on HP.
