Intrinsically Safe Products for Hazardous Locations

Figure 1

When considering a product for a hazardous location, it is important that the product is appropriately rated for that environment. UL, one of the primary bodies that certifies products for use in hazardous environments, defines a hazardous location as a “location where explosion or fire hazards exist due to the presence of flammable gases, flammable or combustible liquid-produced vapors, combustible dusts, or ignitable fibers or flyings.”[1] Figure 1 shows the conditions that are required to create fire and are often present in hazardous environments: oxygen, an ignition source, and flammable material. Continue reading “Intrinsically Safe Products for Hazardous Locations”

U.S. and International Threaded Connection Standards

Threaded Connections

Threaded connections are often referred to as a process connection type. For Dwyer product specifications, this connection type is typically NPT (National Pipe Thread), which is an American standard thread. These connections allow products to be installed directly into piping or with the use of threaded fittings.

For threaded connections there are two common types, (1) straight or parallel thread and (2) tapered thread. Continue reading “U.S. and International Threaded Connection Standards”

One, Two, and Three-Piece Ball Valves: What’s the Difference Anyway?

Any quick internet search for valves will show many different results: manual or automated, brass or stainless steel, flanged or NPT, one piece, two piece, or three piece, and more. With so many different types of valves available, how can you be sure you are purchasing the right type? While your application will help guide your proper valve selection, it is important to have some basic understanding of the different types of valves offered. Continue reading “One, Two, and Three-Piece Ball Valves: What’s the Difference Anyway?”