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PLUMBING NORTH TEXAS FOR OVER 60 YEARS

COMMON PLUMBING TERMINOLOGY 

                  

              A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 

                                                                 A

 

TERM                            EXPLANATION

 

'A' Valve                                A manual gas shut-off valve.

 

ABS                                          Acrylonitrile-Butadiene-Styrene. Rigid black plastic pipe used for drain /                                           waste / vent lines.

 

AC                                             Alternating Current. Electrical supply in which the polarity of the wire                                                reverses rapidly.

AGA                                         American Gas Association

 

AIA                                            American Institute of Architects

 

ANSI                                         American National Standards Act

 

API                                            American Petroleum Institute

 

ASA                                          American Supply Association

 

ASME                                      American Society of Mechanical Engineers

 

ASHRAE                                American Society of Heating, Refrigeration, Air Conditioning Engineers.

 

ASSE                                       American Society of Sanitation Engineers

 

ASTM                                       American Society for Testing Materials

 

AWWA                                     American Water Works Association

 

Absolute Pressure          Atmospheric pressure added to gauge pressure.

 

Absorption Field              A leeching or seeping field engineered to receive septic tank effluent.

 

Acceptance Factor          Bladder tank draw-down expressed as a percentage.

 

Access Panel                      A covered opening that allows access to service a plumbing system.

 

Acrylic                                     Thermo-plastic used on surface of shower walls / bathtubs / whirlpools.

 

Adaptor                                 A fitting that joins two different types of pipe together, or joins threaded to                                        non-threaded pipe ends.

Adjusting Link                   An adjustable strap / bar that forms a connection between the lift rod of a                                        faucet and the ball lever assembly of the drain.

 

Aeration                                The turbulent mixing of water and air to dissipate pollutants into the air

 

Aerator                                A device attached to the end of a faucet that mixes air into flowing water.

 

Air Admittance Valve     A device that replaces a traditional vent to allow air to enter the pipe and                                          equalize pressure, preserving the seal of water in the fixture trap.

 

Air Chamber                        A vertical, air-filled pipe or spring coil, set above the water line to absorb                                          pressure when water is turned off at the faucet.

Air Check                              A device that allows water, but not air, to pass through it. An air check is a                                        typical component in treatment systems using a regenerant eductor.

 

Air Elimination Vent       A device which automatically eliminates trapped air in the "closed-loop"                                            hydronic system

 

Air Gap                                  A device mounted at the back of a kitchen sink, connecting to the drain                                            line between a dishwasher and disposer to allow the dishwasher to                                                  discharge freely into the disposer while preventing contaminated water                                            from siphoning back into the dishwasher.

 

Air-Gas Ratio                      Ratio of combustion air supply flow rate to the fuel gas supply flow rate.

 

Air Lock                                 Blockage liquid flow of liquid (i.e. on suction side of pump) caused by an                                          air bubble in the line.

 

Air Volume Control         Maintains the air charge in a standard water storage tank. Pre-charged                                            tanks do not require an air volume control.

 

Alarm Check Valve         A check valve located in the riser of a wet pipe fire sprinkler system that                                           sounds an alarm when water begins to pass through it.

 

Anaerobic                             The ability to live and grow without air or free oxygen (i.e. some forms of                                          bacteria that break down waste in a septic system.)

 

Angle Discharge Tube  A discharge tube that changes direction of the flow by 90°.

 

Angle Seat Wrench         A valve seat wrench with a handle that includes a 90° bend.

 

Angle Stop                           A shutoff valve between water pipes and a faucet. The inlet connects to                                           the water-supply pipe in a wall, the outlet angles up 90° to the faucet

 

Anode Rod                           A sacrificial rod installed in a water heater. It is composed of one or more                                        metals that protect the tank from corrosion and extend tank life.

 

Anti-Clog Suction            Whirlpool water recirculating system mechanism that prevents clogging                                            but doesn't restrict water flow.

 

Anti-Scald Valve           A shower mixing valve that automatically maintains balance between

                                       incoming hot and cold water supplies by immediately regulating                                                        fluctuations in pressure. As a result, temperature remains constant,                                                 though the outlet pressure may drop. Also called pressure-balanced valve

 

Anti-Siphon                         Preventive device for back-flow of liquid such as on sprinkler systems to                                          prevent water from trickling back into the feed supply.

 

API Specifications           American Petroleum Institute specifications

 

Apron                                      The apron (or skirting) is a decorative portion of a bathtub covering the                                            rough-in area from the floor to the top rim of the tub.

 

Aquastat                               A thermostat that is submerged in water. It is used to control operation of                                        a specific device.

 

Aspiration                            The process of mixing air with discharging water to enhance the hydro-                                            massage effect of a whirlpool.

 

Auto Pilot                             A gas pilot device that automatically shuts off gas supply to the appliance                                        burner if the pilot flame is extinguished.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Master Plumber’s License M36659 Texas State Board of Plumbing Examiners, 929 E 41st, Austin TX 75765 800-845-6584

 

 

 

 

 

 

 

 

 

 

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