Severe Service Valves (SSVs) mean different things to different people. Until today, defining SSVs had little if any global agreement or recognition. That is about to change as the Manufacturers Standardization Society (MSS) has accepted an application to produce a Standard Practice of defining them. This article provides information about the selection of SSVs in […]
An Introduction to Severe Service Valves Read More »
Pressure-Temperature Ratings for Valves When it comes to valves, there are guidelines in place to protect workers and the environment from valve failures and leakage. In this example, we are talking about how much operating pressure a valve can withstand at a specific temperature. This is known as a Pressure-Temperature Rating. Based on the material(s)
Class 150 Does Not Equal 150 psig Read More »
There are several versions of the Knife Gate Valve design. It is important to note that some Knife Gate Valves operate in harsh severe service applications, where as others simply cannot hold up in these conditions – they simply weren’t manufactured to do so. Two categories can be used to better differentiate between Knife Gate
Types of Knife Gate Valves Read More »
Knife Gate Valves (KGVs) were first created for the Swedish Pulp and Paper industry in the 1920s. The market demanded an inexpensive valve for pulp stock applications, and the revolutionary knife gate valve design was born. Since then, knife gate valves have traveled back and forth across the globe undergoing several alterations; the Push-Through Knife
What is a Knife Gate Valve? Read More »
For consistency amongst manufacturers, valves are designed to meet established standards. These standards are set for valve performance, design, materials, and functionality. This article aims to cover the organizations responsible for establishing standards in valve manufacturing, along with common valve ratings and testing procedures. Valve Standards Organizations Valve standards are created by private entities that
Valves come in all sorts of shapes and sizes. This is also true with the parts that make up these valves. These components can be sorted into 4 main categories, with two of them being subcategories. Non-Pressure Containing Parts Pressure Containing Parts Valve Trim Resilient or Compressible Parts This article will cover each of these
What is a Valve? A valve is a device that regulates the flow of gases, liquids, or loose materials through an aperture, such as a pipe, by opening, closing, or obstructing a port or passageway. Valves perform different functions to suit their applications. These functions are to isolate, control, and check. Depending on what function
Valves have come a long way from their beginnings, almost 2000 years ago. Technological advancements and human knowledge have continuously allowed new and improved designs to emerge in the valve industry. Technological advancements are paired with the need for valves to be better suited for the applications as industries need enhanced valves. Historically, there are