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300D Full-Encirclement Tee™: SHORTSTOPP® 3-WAY™ Tee designed for ASME B16.5 Class 300 service. This is a full-encirclement-type fitting.
300D Spherical 3-WAY™ Tee: Spherical 3-WAY™ Tee is designed for ASME B16.5 Class 300 service.
300D Split Tee: A SHORTSTOPP® Welding Fitting designed for ASME B16.5 Class 300 service. This is a full-encirclement-type fitting.
3-WAY™ Tee: A scarfed nipple-type SHORTSTOPP® fitting with a third outlet between the pipe and the top outlet. Most 3-WAY™ Tees are designed for gas distribution.
Ampere: is the amount of electric current flowing in a wire.
Aerosol: is the suspension in air (or gas) of minute particles of a liquid or solid.
Alarm: is an audible, visual or physical presentation designed to wan the instrument user that a specific level of a dangerous gas/vapor concentration has been reached or exceeded.
Alarm only instruments: is an instrument providing an alarm(s) which does not have an integral meter or other readout device indicating current concentration levels.
Alarm set point: is the selected gas concentration level where an alarm is activated.
ANSI: American National Standards Institute
ASME: American Society of Mechanical Engineers
ASNT: American Society for Non Destructive Testing
ASTM: American Society for Testing of Materials
Aspiration: term used in connection with bringing an atmosphere sample into a gas leak detection unit or vehicle.
Atmospheric pressure: the pressure of the atmosphere at a specified time and place. 1 bar = 1 atmosphere = 14.5 PSI
Azote: French for nitrogen (N2)
Background environment: this is the ambient environment against which an indication of a gas leak must be evaluated.
Batching: Moving different products (gasoline, kerosene, diesel, etc.) through a pipeline in "batches." Batching Pig
Bend Radius: The radius of a pipe bend is the distance from the center of the bend radius to the centerline of the pipe. Example: Where D=diameter of the pipe, 1.5 radius bend in 12" pipe has an 18" bend radius.
Blocking: certain conditions can cause a sensor not to function properly, when this happens normal gas sensing is blocked until the condition is removed. The most common block would be lack of sufficient oxygen for an explosimeter.
Bottled gas: several of the lighter hydrocarbons, such as propane, butane, pentane and mixtures for these gases are liquefied and employed as fuels. These so called bottled gases, which are usually stored in steel cylinders, make possible the use of appliances such as cooking stoves and heaters in localities where a centralized gas supply is not available.
Butane: a hydrocarbon gas with chemical formula of C4H10. It is commonly used as a bottled, fuel gas.
AB - CD - EF - GH - IJ - KL - MN - OP - QR - ST - UV - WX - YZ
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