There are many different types of valves for different applications, so how do you know which is the best to use for your application? Let’s look at globe valves and ball valves. The main difference between these two types is the way they close. A globe valve uses a plug (stem) that closes against the […]
What is the face to face dimension of a flanged ball, globe or gate valve? The ASME B16.10 chart answers this question, as it standardizes the distance between the inlet and the outlet of the most common flanged valves. The purpose of this ASME specification is to ensure the interchangeability of valves produced by different […]
Learn about the key ASTM material specifications for valves. A cast valve body is manufactured by pouring liquid metals into molds and is common for valves above 2 inches in diameter. A forged valve body is produced by forging and machining solid steel. The key specifications for cast steel valves body materials are ASTM A216 (WCA, WCB, WCC), […]
The tables show the dimensions and weights of API 600 gate valves (bolted bonnet / rising stem) CLASS 150LB-2500LB Dimensions in inches (millimeters) Gate valve diagram showing the key parts of a gate valve for piping WEDGE TYPES The image below shows how the gate valve wedge opens and closes […]
The material selection of gate valve mainly depends on the fluid medium and working environment. According to the different medium and environment, the material selection is also different. Generally speaking, the material selection of valve is divided into three aspects; the sealing surface of valve disc, in which the valve body is generally made of […]
What is a ball valve? It’s a question new customers often ask us at sales team, so let’s look into this to answer the question and explain what a ball valve is. A ball valve is described as a mechanical device that directs, guides and modulates the flow of various types of liquids by way […]
A knife gate valve is a component that utilizes a blade to cut through clogging of heavy liquids. These valves were designed to work in some of the most corrosive, erosive and abrasive environments in the world. Knife gate valves were originally designed for the pulp and paper industry. Stringy pulp would get stuck between the wedge and […]
Butterfly valves have been around for a long time, and are used for a variety of applications. They made their first appearance during the 1930s, and have been utilized by several industries ever since. Often made out of cast iron, butterfly valve’s name is based from the functionality of its disc. There are a few […]
A butterfly valve is a regulating and shut-off device that can be an alternative, in some applications, with globe valve and ball valves. This type of valve may be classified base on multiple parameters: design: centric, double eccentric, triple eccentric end connection type: wafer, lug (semi or full), flanged and double flanged seat material: soft […]
API is American Petroleum Institute The API standard 598: Valve Inspection and Testing, covers the testing and inspection requirements for gate, globe, check, ball, plug and butterfly valves. It has acceptable leakage rates for liquid as well as gas testing. All valves built to the various API standards are required to meet API-598 leakage criteria […]
