Advice desired

My (hot water) surface cleaner was putting out too much pressure. It came with two 2502’s, I ordered 2 more and installed them, the pressure is now 2700, which might be ok for commercial, but I don’t want it that high for residential.

Question and advice seeking : If I order 4 25025’s, that should put me under 2500, but is that going to be enough for dumpster pads/restaurant ickiness (technical term). I know that I can pretreat and posttreat but I have no experience on commercial dumpster pads.

Question 2: When I put the gauge on before my suttner gun, the pressure is about 3600 (seems to vary by about 100 psi at different times). When I put the gauge on before my surface cleaner, it is almost 4k (before depressing the lever), which I don’t understand why there is a difference. Same hose length, same connection, no 90 degree bends on WW. THe only thing I can figure is there must be some restriction between the QC on the WW and the bar. I don’t know enough about this to venture any other guesses. I do not have the ball valve on during the test (waiting on PT order for new QC).

Multiple bucket tests put me at just about 4 gal in 32 seconds.

I can’t think of anything else to add other than I like pizza.

I can only comment on two things.

Restaurant pads are best cleaned with hot water unless you enjoy scrubbing thoroughly with degreasers first.

It’s my understanding pressure gauges are unreliable.

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Thanks. I forgot to add that it is a hot water unit. I bought it with the intent to do commercial jobs, but I won’t touch anything, other than my concrete, before I get the pressure figured out.

I’ll edit the post to contain that bit of information.

Right when you release the trigger that’s called the pressure spike. That’s not the actual pressure your pump is putting out. The pressure spike is the immediate increase in pressure or a “pressure spike” at the gun because it takes a moment for the unloader to be actuated. The gauge will stay at that number until you squeeze the trigger and you’re getting pump psi.

You’ll be fine with a little under 2500 for dumpster pads with your hot water machine. It’ll help to use EBC or some other degreaser. If you need higher pressure you can always throw in some different nozzles in your surface cleaner before the job. It only takes a few minutes. Dumpster pads aren’t usually very big so could even just use your wand.

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Thanks. You have been a great deal of help to me and let me say I appreciate it.

I just couldn’t figure out why the pressure was different for a 2315 gun or for the WW or for the lance, before pressing the trigger on any of them. I would think it would always be the same. Oh well, the more I do the more I learn.

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Maybe the pressure spike can be a little different depending on what position the plungers are in on the pump when you let off the trigger? If you’re just talking a 100 psi difference that’s nothing.

THis is the pressure before anything is depressed or opened. I just don’t get a 2-300 increase in pressure, maybe I’m dumb just not getting it. In my uneducated mind, the pressure should be the same no matter what I connect to the QC (after gauge). I get that I didn’t buy the most expensive gauge, and that may be the issue. the first one malfunctioned after 1 use, well 3 measurements.

The variable pressure suttner lances lose pressure over time,internal leaking…i do mostly restaurant cleaning,dumpsters ,drive thrus,get sodium hydroxide beads from your local chem supply house,i pay 50 dollars for a 50 pound bag,2 cups of beads mixed with 5 gallons of water is a fairly hot mix,wear eye protection and gloves,use pump up sprayer or 12 volt system to apply for this ratio,10 min dwell and pw with hot water,the 2500 psi you have will work,because the strong chemical and hot water does the work,make the chemical ratio stronger if needed, be careful thugh,wear ppe, add 1/4 cup surfectant to your mix too

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Thanks, I have hydroxide, and all the ppe, I’ve only used the hydroxide on decks so far. I got my hydroxide online. I live in the sticks and the “local” hardware place sells stuff at 2x the normal cost and up. Lets just say that they wanted 3.58 for a reel to hose connection and I got the same part at the surplus place for .58.

I Appreciate the info on the lances leaking, didn’t know that.

Sur no prblem

Is it really a hassle to add 2 more letters :joy:

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Ha,ha😆

If you have a gun or surface cleaner hooked up and then start the machine you’re still going to get a pressure spike. That’s because when you start the machine the pump has to fill the pressure hose with water and build pressure before the unloader does its thing. That’s really no different than releasing the trigger for the unloader to do its thing. You’re still going to get the pressure spike.

Try not to overthink things. You don’t need to know why there’s a few hundred psi difference with the pressure spike on the gauge. It’s not going to help you in any way. Like I said, it could just happen to be where the plungers/pistons are when it spikes or, as you mentioned, maybe the gauge is off a little.

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@Dirtyboy you have a cheap gauge @dcbrock you have a cheap gauge. I don’t get it??? You guys are professionals who work with high pressure equipment and you have no ability to see EXACTLY what psi you’re getting at the nozzle/nozzles? Water wears nozzles faster than you think and good luck bringing your spike down when you set up a new unloader without name brand test gauges.

Do you have a recommended gauge? I was looking at digital gauges yesterday but hadn’t dug into it much.

Weksler, Ashcroft, Wika meet the minimum. Winters by a just barely. There’s better stuff out there but you don’t want anything under those brands that’s for sure.

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I was checking out your recommendations, only made it through the weksler one so far. They only offer two gauges that will read the pressures I need and they are not for continuous use. I was thinking to leave it mounted. According their site when selecting a gauge it says that The maximum operating pressure should not exceed 75% of the full-scale range. The normal operating range should be in the middle half of
the range (between 25% and 75% of the fullscale range); whenever possible. So that means I would need a roughly 7200 psi guage, but they only make 5 or 10k, and neither are for continuous use, just testing.

I’ll be checking into the others, just wanted to see what you had to say, if anything, regarding the “testing” gauges.

5k liquid filled would suit your needs. Pop it in and pop it out they are not for hard mounting on permanent “display”

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@dperez what about this wika one? Know anything about this model? Bourdon Tube Pressure Gauges - 232.54, 233.54 - US WIKA online shop

I have to contact them, apparently there are several configurations of this model.

Sirrocco vacuums has a permanent surface cleaner gauge setup for psi and heat;and a variable pressure adjustment also,which would be nice

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