PART 1 Flashcards
A device used in a hydraulic system to store energy or, in some applications, dampenpressurefluctuations.
accumulator
An extension added to a short face-to-face valve to conform to standardAPI 6D(or ISO 14313: 1999) face-to-face dimensions.
adapter spool
As it pertains to a valve construction, a valve body that is completely welded and cannot be disassembled and repaired in the field.
all-welded construction
A pin welded to the body of a ball valve.
anchor pin
A variation of the globe valve in which the end connections are at right angles to each other, rather than being in line.
angle valve
API 6D specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems.
API 6D: Specification of Pipeline Valves
A professional association that was founded in 1880. It “promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe” via “continuing education, training and professional development, codes and standards, research, conferences and publications, government relations, and other forms of outreach.”
American Society of Mechanical Engineers (ASME)
Pressure opposing the desired flow of a fluid in a pipe.
back pressure
A valve using a spherical closure element (ball) which is rotated through 90° to open and close the valve.
ball valve
A gate valve actuated by means of a set of bevel gears having the axis of the pinion gear at right angles to that of the larger ring gear.
bevel gear operated (BGO) valve
A valve that isolates or blocks possible leaks in case of an emergency situation.
block valve
The capability of obtaining a seal across the upstream and downstream seat rings of a valve when the body pressure is bled off to the atmosphere through blowdown valves or vent plugs. Useful in testing the integrity of seat seals and performing minor repairs under pressure.
block-and-bleed
A valve or system of valves that, when activated, initiates a blowdown of a pipeline, plant, process or platform; similar to an emergency shutdown valve (ESDV) that shuts
blowdown valve (BDV)
An optional relief valve installed on ball valves used in liquid service to provide for the relief of excess body pressure caused by thermal expansion.
body relief valve (BRV)
The top part of a valve, attached to the body that guides the stem and adapts to extensions or operators.
bonnet
