Thuật Ngữ Cơ Bản Trong Ngành Van:
A‐C: Asbestos‐Cement
ANSI: American National Standards Institute
API: American Petroleum Institute
ARV: Air Release Valve
ASME: American Society of Mechanical Engineers
ASTM: American Society for Testingand Materials
AV: Air Valve
AVV: Air/Vacuum Valve
AWWA: American Water Works Association
AWWARF: American Water Works Association Research Foundation
BAT: Best Available Technology
BFA: Back FlowActuator
BHN: Brinell Hardness Number
BSI: British Standards Institution
CAV: Combination Air Valve
CCW: Counter clockwise
CFM: Cubic Feet per Minute
CFS: Cubic Feet per Second
CI: Cast Iron
CS: Carbon Steel or Cast Steel
CSA: Canadian Standards Association
CSO: Combined Sewer Overflow
CW: Clockwise
CWA: Clean Water Act
CWP: Cold Working Pressure
DI: Ductile Iron
DIN: Deutsche lndustrie Norme
DN: Nominal Diameter
FBE: Fusion Bonded Epoxy
FF: Flat Face
FLG: Flange
FM: Factory Mutual Association
FPS: Feet Per Second
GPM: Gallons Per Minute
HRB: Rockwell B Hardness
HRC: Rockwell C Hardness
HW: Handwheel
IBBM: Iron Body, Bronze Mounted
ID: Inside Diameter
IPS: Iron Pipe Size
ISO: International Standards Organization
JIS: Japan Industrial Standard
MCL: Maximum Contaminant Levels
MFD: Mechanical Flow Diagram
MGD: Million Gallons per Day
MIL: Designation for United States Military Standards
MIL: 1/1000th of an inch
MJ: Mechanical Joint
MOV: Motor Operated Valve
MRO: Maintenance and Repair Order
MSS: Manufacturers Standardization Society
NACE: National Association of Corrosion Engineers
NDE: Non‐Destructive Examination
NEMA: National Electrical Manufacturers Association
NFPA: National Fire Prevention Association
NPDES: National Pollutant Discharge Elimination System
NPS: Nominal Pipe Size
NPT: National Pipe Thread Taper
NST: National Straight Thread
OD: Outside Diameter
OS&Y: Outside Screw and Yoke
PN: Nominal Pressure
POT: Point of Treatment
PSI: Pounds per Square Inch
PSIA: Pounds per Square Inch Absolute
PSIG: Pounds per Square Inch Gage
PVC: Polyvinyl Chloride
RF: Raised Face
RJ or RTJ: Ring Joint or Ring‐Type Joint
RMS: Root Mean Square Roughness Height
RPM: Revolutions Per Minute
SCADA: Supervisory Control and Data Acquisition
SCV: Silent Check Valve
SCFM: Standard Cubic Feet per Minute
SDO: Standard Development Organization
SDWA: Safe Drinking Water
SPDT: Single Pole Double Throw
SS: Stainless Steel
SSPC: Steel Structures Painting Council
SSU: Seconds Saybolt Universal
STP: Sewage Treatment Plant
SWP: Steam Working Pressure
TDCV: Tilted Disc®Check Valve
TIR: Total Indicator Reading
UL: Underwriters Laboratories
UV: Ultra violet
WEF: Water Environment Federation (formerly WPCF)
WOG: Water‐Oil‐Gas
WP: Working Pressure ‐ Synonym for operating pressure
WPCF: Water Pollution Control Federation (named changed to WEF)
WTP: Water Treatment Plant
WWTP: Wastewater Treatment Plant
