P3 P0550 Water Meter

I carry this in my motorhome and mainly use it when dumping tanks. I like to fill and flush the black tank and this is handy for getting enough water to get a good flush without risking overfilling the tank (I did that one time... had water coming out of the roof vent). Works real well.

Purchased prior to taking a RV trip to Alaska for 4 months. I wanted to have accurate readings while filling my freshwater tank because I found the dummy lights in most RV's are not accurate at all. It worked perfectly for a while but then it actually came apart on the female connection end. Well, it's out of warranty but I'm now home and called the manufacturer through Amazon to see if they would still replace it for me. Without hesitation they said "No Problem" they would send me a new one. They indicated that I probably overtighten it on the hose which likely caused it to come apart. In any case, what GREAT service and understanding. This is a great little product and would highly recommend for all RV'ers on the road............

This water flow meter is quite basic, but seems to work well in 'casual' applications where high accuracy is not required. The meter is equipped with a female 3/4" hose fitting on top and a male 3/4" hose fitting on the bottom. Actually, as some have reported elsewhere, the male thread is not tapered at all and some might view this as a problem, but I think in the majority of applications for which this unit is designed, this is an appropriate thread. The meter has two displays that can read in either gallons or liters. The display reads whole numbers to three digits, plus one decimal position. Both displays read the same number of gallons/liters that have passed through the meter since it was reset. The top display can be reset by briefly pressing the left side button, while the lower display can be reset by holding in the right side button for a few seconds. This way, you can use the top display to record the amount of water that has passed through during an episode (e.g. during one watering session of a garden), after which you press the left button and reset that display, while leaving the lower display still showing its reading. The lower display can then act as an accumulated water reading that you reset less often (this is why the meter requires you to hold the button for a longer time, to prevent inadvertent resetting). I should note that this meter does NOT show flow RATE (e.g. 'gallons per hour'). It simply shows how many gallons/liters have passed through it since it was last reset, irrespective of time. If you want to know RATE, you can allow the meter to measure water over a fixed period of time, perhaps for one minute or one hour. The meter is powered by a single CR2032 wafer battery, which can be accessed by unscrewing the water-proof rear cover; it has a slot that fits the edge of a coin to unscrew it, and an O-ring seals the meter innards. The meter is intended for outdoor use, and is water resistant against rain and splashes. It appears that a small brass pinwheel is used to do the measurement, so any debris that can get stuck around the wheel could prevent accurate measurement. It is difficult to see this part clearly, so I am not certain of the details. To save battery power, the display blanks out if no water has flowed in a while. As soon as water flows again, the display turns back on automatically. I used this meter to record gallons per minute (I reset the display, ran the water for one minute, and got the 'gpm' reading from the display) in order to do a water capacity calculation for a process that would utilize the water from a spigot in my home. It worked as expected.

I use this with a flush out valve to clean out my black and gray tanks. It works great to know how much water you are putting in so you don't overfill. Easily resets when you shut the water off by just holding in the one button for a minute. Seems very accurate and I have had zero problems with it. Must have for sure!

Don't be mislead by 1 star; this item has zero value. Please don't purchase this product; hopefully it will be discontinued soon. It appears to have no redeeming qualities. First, it is very cheap and flimsy plastic as noted elsewhere. I suspect most of the positive, honest reviews were written in the first week after receipt. Second, it is very inaccurate. They (seller? distributor? manufacturer?) probably tested many before finding one accurate within 10 percent to support their claim (note no guarantee of any kind). Third, there is NO real information provided such as needed water pressure range, potential volume range, connection types, max/min volumes, whether it includes a filter or is degraded by impurities or particles, etc. I design and install small irrigation systems (yard size and up) as a volunteer for a nonprofit. The one I purchased 11/2016 was very inaccurate from the start despite my being very careful with it. After babying it on a couple of small projects in which it was simply too inacurrate for any value, I tried it one more time. It broke open when I wasn't present, wrecked some other components, eroded a hillside, and wasted a lot of water. I'd say this is limited to just a cheap toy for idle curiosity, but since it takes your time and money and provides no reliable information even if it doesn't break immediately, it really has no merit whatsoever.

useful dual reading gauge - for intermittent and total flow. helps in filling trailer fresh water tank. Although plastic, seems to survive my rough treatment.

If you will water tanks on RV get one

It worked until it didn't. I never tested it for accuracy, but it served its purpose giving me a general sense of how long I needed to run the sprinkler to achieve a particular saturation. Then today the top broke off, spraying water all over my garage instead of my lawn. I guess this is probably what you should expect from plastic fittings in an environment where brass has been the gold standard. I have pictures, but I haven't been able to figure out how to attach them.

Didn't arrived at all, don't know why they ask me to write a review on this. India with love

Using to measure gallons pumped out of rain water well in back yard,wore our after a couple of years (DUE TO DIRTY WATER I SUPPOSE) +or - 55,000 gallons

Buen producto, para ser un producto pequeño, si cumple la función de medir los litros de agua utilizados, lo recomiendo para usos caseros.

Easy to use and serves a purpose only it can-how much is going through the line! Came on time and of great value

Tengo fermentadores de 59 litros y, dependiendo la receta, a veces me sobra producto que meto a otro fermentador pero nunca se llena. Utilicé este medidor de fluidos y es excelente, ahora se que mi sobrante, dependiendo la receta, va de 12 a 29 litros.