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The Winters PEM series pressure gauge with brass wetted parts has a circular dial enclosed in a steel case and a male connection, and measures pressure with a dual scale (psi/kPa)/(Hg. vacuum/kPa) with an accuracy of + or - 3/2/3%. The brass wetted parts are for measuring non-corrosive liquid and gas pressure. The black-painted steel case is Ingress Protection certified IP52 for protection against dust or liquids. The circular dial comes in 1.5" (40 mm), 2" (50 mm), 2.5" (63 mm), and 4" (100 mm) diameters. The dial has an aluminum black pointer. The lens for the 1.5", 2", and 2.5"diameter dials is polycarbonate for high impact resistance. The lens for the 4" diameter dial is glass for strength and clarity. The gauge measures pressure with a dual scale of either psi/kPa or Hg. vacuum/kPa. The gauge is accurate to + or - 3/2/3% over the entire range of the gauge, American Society of Mechanical Engineers (ASME) B40.100 Grade B accuracy class. The male connection is mounted on the bottom or center back of the gauge and has either a 1/4" NPT (National Pipe Thread) or 1/2" NPT rate. The bourdon tube is phosphor bronze, the movement is brass, and the welding is silver alloy. The over-pressure limit is 25% of full scale value. The working pressure is a maximum of 75% of full scale value. The operating temperature is -40 to 150 degrees F (-40 to 65 degrees C). This pressure gauge is suitable for plumbing, heating, air conditioning, pneumatic, hydraulic, water tanks, and air compressors.
Pressure gauges are instruments used to measure the pressure of a gas or liquid inside a vessel and, often, to help ensure the optimal amount of pressure for a given application. Pressure gauges can range from everyday instruments, such as those used to measure the air pressure in a car or bicycle tire, to highly accurate gauges used in mechanical and industrial processing. Most often, pressure gauges measure pressure relative to another reference. For instance, gauge pressure measures pressure relative to ambient air. An example of a pressure gauge measuring relative to ambient air is a tire pressure gauge or a blood pressure gauge. Differential pressure is the difference in pressure between two points, such as when measuring liquid flow along various points in a pipeline. An absolute pressure gauge measures pressure relative to a perfect vacuum, such as an atmospheric or barometric pressure gauge. All types of pressure gauges include either a male or a female mount to connect to the vessel where pressure is being measured, and display results on a dial with varying increments of measure across a given range.
Winters Instruments manufactures pressure gauges, thermometers, diaphragm seals, pressure transmitters, and switches. The company, founded in 1953, is headquartered in Toronto, Canada.
Delwyn J. Wendler
2025-09-05 15:33:38
Good product, Works great.
D GUY
2025-08-22 12:17:15
Has their manufacturer name proudly displayed in large letters and that they've been around since 1953 also looks like waaaay more expensive ones and works awesome baby!!! It's 60 lb max too, for my bike pump as old one was 200 lb....[wth!!!!] I never put more than mid, high 40's lbs of air in anything anyway so this is WAAAAY more accurate and is perfect for all but road bikes with 100 lbs needed and they have higher psi models too!!! LOVE IT!!!
Pa-ti
2025-08-09 17:55:13
Worked perfectly
BargainHunter
2025-07-17 15:59:23
I purchased four of these vacuum gauges. I installed two in two separate cars and bought the other two as spares (because they are cheap in price when compared to other vacuum gauges). I am using them in a custom made dash mount configuration and have a line run to a tee that taps the vacuum line for my break booster. The gauges themselves work just fine and I'm relatively pleased with them. The readings are accurate when I used my vacuum test kit to check them; however, they all seem to make a rattling or chattering noise when the needle is climbing as the result of tapering off of an acceleration. It is most noticeable between about -5" and -15" Hg. When the vacuum goes high, such as in a coast or down-shift deceleration, the gauge is quiet again. It does not make the noise with the engine at idle. One of the gauges I received was particularly obnoxious and I had to swap it out with one of the spares. The spare also makes the noise, but not to the same degree as the first. The one installed in the other car makes the noise too but it's not as loud. The sound annoys my wife enough that I'm most likely going to have to purchase another brand of vacuum gauge for her car. As far as accuracy of reading, all of these gauges seem to work just fine. Very little room to complain for the price. If used in a situation where there is very little fluctuation in the vacuum, this might not be a problem at all. If they are installed in a place where noise doesn't matter, these are a great buy!
David
2025-07-08 13:54:29
Works like it is supposed to.
Jose A Garcia
2025-07-03 11:08:05
VERY GOOD
TM
2025-02-01 15:34:45
Worked great on vacuum tool
The Grumpy Guy
2025-01-31 10:37:25
I gave it three stars because it works other than that it's really cheaply made and if I had the opportunity to buy a different one I would not the best out there. you get when you pay for cheap Chinese product be looking for something that's going to last a long time this is not the one I don't recommend it and wouldn't buy it again
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