 |
Valves(2) |
cont'd Valve Types
 |
Trunnion-mounted Ball valve A trunnion mounted ball valve is a type of quarter-turn valve in which the ball is fixed (anchored) by mechanical supports, called trunnions, at the top and bottom, preventing it from moving axially (up/down) .. |
| Article | |
| |
Pressure Relief valve A pressure Relief Valve is a safety device designed to protect a pressurized vessel or system during an overpressure event .. |
| Article | |
| |
Solenoid Valve A solenoid valve, otherwise known as an electrically-operated valve is an automatic valve which serves the purpose of removing the need for an engineer to operate a valve manually .. |
| Article | |
| |
Emergency Shutdown Valve Emergency Shutdown Valves (ESV) or (ESDV) are widely used in critical units in oil, gas and chemical processing plants and refers to an actuated valve. Various valve types can be used for an ESV, but the most common is the Ball valve .. |
| Article | |
| |
Pressure Reducing Valve Pressure reducing valves (PRVs) automatically adjust the degree of valve opening so that the pressure remains unchanged even as the flow rate fluctuates .. |
| Article | |
| |
Pressure Reducing Valve - Pressure Relief Valve - Pressure Safety
Valve Each valve have different functions, but are often confused by some people. If you look at the abbreviations, that is not really surprising .. |
| Article | |
| |
Control valve The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point .. |
| Article | |
| |
Bubble-Tight Valve Bubble-tight valves do not pass bubbles when they are completely closed. Bubble tight is when one part of the valve is in water and the other is pressurized by air/nitrogen .. |
| Article | |
| |
Bypass valve A bypass valve is mounted in a so-called bypass loop that allows an instrument, control valve or other device to be bypassed .. |
| Article | |
| |
Cryogenic Valve As its name suggests, cryogenic valves are designed to be used in very cold applications. They are thus most popularly used by companies that work with Liquefied Natural Gas (LNG) or Compressed Natural Gas (CNG) .. |
| Article | |
| |
Fire-safe Valve Fire-safe valves are specialized valves designed to prevent liquids and gases from escaping in the event of a fire .. |
| Article | |
| |
Parallel slide gate valve The Parallel Slide Gate valve is a special design of a valve and an alternative to the traditional flexible wedge-shaped valves. The disc consists of two halves, compressed by a spring, which sit on parallel seat rings .. |
| Article | |
| |
Slab Gate Valve Slab Gate Valves also named "Through Conduit Gate Valves" are very useful in transportation pipe lines for gas, crude oil and oil products .. |
| Article | |
| |
Flush Mounted Valve Flush Mounted valves are designed to provide dead space free closure for vessels, reactors, storage tanks and autoclaves and to provide drainage to semi-solid media, viscous material, slurry and abrasive material .. |
| Article | |
| |
ARV or ARC valve ARV valve (automatic recirculation valve) is a multifunctional valve whose primary purpose is to ensure that a pre-determined minimum flow is assured through a centrifugal pump at all times .. |
| Article | |
| |
Needle valve Needle Valves are used to make relatively fine adjustments in the amount of fluid flow .. |
| Article | |
| |
Needle Valve Manifold Needle valve manifolds integrate several valves into a common, single housing .. |
| Article | |
| |
Diaphragm Valve Diaphragm valves are used on shut-off and throttling service for liquids, slurries and vacuum/gas, and it is a quick opening valve .. |
| Article | |
| |
Diverter Valve Diverter valves are used to divert product flow from one inlet to multiple outlets. They are used on simple gravity (no pressure) applications and high pressure applications .. |
| Article | |
| |
Pinch Valve Pinch valves have gained great popularity in a number of industries, including food and beverage, medical, pharmaceutical, cement, wastewater treatment and several others, mainly because they clean and move the flowing media under pressure .. |
| Article | |
| |
Wafer check valve Wafer check valves are in-line pipe valves used to control the direction of flow of fluids and reduce or completely prevent potential backflow in piping systems .. |
| Article | |
| |
Choke valve A choke valve is a type of flow control valve used to control the flow of fluids, such as gases or liquids, in a pipeline .. |
| Article | |
| |
Blowout Preventer (valve) A Blowout Preventer, often known as a BOP, is a critical safety valve device used in high-pressure drilling operations, particularly in the oil and gas industry. It serves as the last line of defense against uncontrolled releases of oil or gas from a well, often referred to as a blowout .. |
| Article | |
| |
Double Block and Bleed valve Under certain conditions double block and bleed systems are needed to prevent product contamination or where it is necessary to remove essential equipment from service for cleaning or repairs while the unit continues in operation .. |
| Article | |
| |
True meaning of Double Block and Bleed On March 4 2010 Garza, Mechanical Lead - Static Equipment Engineering Group at ExxonMobil Development Company, gave a presentation at the VMA Technical Seminar in San Antonio entitled "Isolation Philosophies" in which he asserted that many people take the term "Double Block and Bleed" (DBB) .. |
| Article | |
