Winters PFP Series Premium Stainless Steel 304 Dual Scale Liquid Filled Pressure Gauge with Brass Wetted Parts, 0-300 psi/kpa, 4" Dial Display, +/-1% Accuracy, 1/4" NPT Bottom Mount

The Winters PFP series pressure gauge has brass wetted parts, a 4" (100 mm) glycerin-filled circular dial enclosed in a steel case, a lower mount 1/4" NPT male connection, and measures pressure with a dual scale (psi/kPa)/(Hg. vacuum/kPa) with an accuracy of + or - 1%. The brass wetted parts are for measuring non-corrosive liquid and gas pressure. The stainless steel 304 case is also corrosion resistant and is Ingress Protection certified IP66 for protection against solid objects, including dust or liquids. The circular dial is 4" in diameter and filled with glycerin for protection against vibration and pulsation. The dial has an aluminum pointer, anodized black, that is micrometer-adjustable for ease of calibration, and the lens is polycarbonate for high impact resistance. The gauge measures pressure with a dual scale of either psi/kPa or Hg. vacuum/kPa. The gauge is accurate to + or - 1% over the entire range of the gauge, American Society of Mechanical Engineers (ASME) B40.100 Grade 1A accuracy class. The male connection is mounted on the bottom of the gauge and has a 1/4" NPT (National Pipe Thread) rate. The bourdon tube is phosphor bronze, the movement is OT59 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 -4 to 150 degrees F (-20 to 65 degrees C). This pressure gauge is suitable for hydraulic equipment, pressure washers, oil field equipment, pump, compressors, and process systems.

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.