Document Zn8aKnKEypq8gGEQQDr0QEb2d

968 CHAPTER 68 1965 Gvide And Data^Boolc Symbol Description of Horn'- Typical &&*'' Wa weight of dry air ' ' ' '' i.Q> W9 weight of water n ' - x quality ct vapor: - percentage x conuBfntion - lb per lb of mixture X thickness, distenoo ft Z vertical distance i--11 horssontnl dstnm pfaae - ft ' Z Gibbs function, H T8 Btu, Btu per lb - a ' thermal diffurivity aq ft per hr a ahaoiptiTity (radintion) percentage 0 rmrfMpnt nf Hwrn] wnlnmelrlf. er- 1/F 1 T ' ratio of specific heats, e,/e V exponent of iaeatropic expeaaion or 1 eomprtoion a ''difference between values- -''emusivity * percentage f efficiency percentage 0 degree of saturation percentage 0 viscosity, dynamic lb per (ItHaeo) A, riaeosity, abaohrte *- dbKaee) per eq ft W aq ft per see #0 density, 1A> ' Ripisa.RAiitn,>Tm eonstant lb pm ou ft Btu per (hr) (aqft) T time too, hr ' * relative humidity, VE!P percentage * Helmhoi* free enenv, O -- TS ^ Btu, Btu per lb SUBSCRIPTS . . These iare to be affixed to the appropriate symbols. Several subscripts may be osed together to draote combinations of various states, points,'or paths. Often the sobeeript indicates that a particular property is to bo kept eonetnnt in t phases. states or physical conditions e referring to critical state or eriUeal value c convection . dh dry bulb " dp dew point > bam of natural logarithm* . - ' f lefcuiag to mturated liquid'' referring to evaporation (rietinu referring to aatorated vapor nfening to a prow having referring to saturated mBd \J --r--mm| to rK*w| phaae in ' ip - referring to change of phaae in sublimation at mean vahj# M molar basis o itiming to of standard atatea or **^<*1^ p referring to constant preeaoro conditions or proceama p potential r refrigerant f -- yaHtatlofl 8 aatanted water vapor a aeaaiMa I total (pressure) T ' referring to bolhamal conditions a referring to constant volume s velocity (pressure) <s waU w6 wot bulb t, 3, different points it k pirn m, or different instants of tin* GRAPHICAL SYMBOLS FOR DRAWINGS7' ;; Piping Hearing High-Pressure Steam Medium-Pressure Steam Low-Pressure Steam High-Pressure Retain - Medium-Pressure Itetura Low-Pressure Return Boiler Blow Off _ ( Condensate or Vacuum , Pump Discharge Feedwater Pump, Discharge* ' . Make-Up, Water Air Relief line ', , Fuel Oil Flow ' " Fuel Oil Return " Fuel Oil Tank* Vent '' * ' ' Compressed Air Hot Water Heating Supply Hot Water Heating Return \ '.'i-. ir iv ' ' y/ . - /----- '-f-- "V ? l]-' ----------- _ 'J` ' v ` ~ - & ' ft ~ . -- / " V ` 'J*\ ~ "------- -- Air Coodfrioafog ' Refrigerant Discharge Refrigerant Suction Circulating Water Flow Circulating Water* Return Condenser Water Flow ' Condenser Water Return Chilled Water Flow (billed Water Return Make-Up Water '' ;HumidiScation Line Drain * Brine Supply Brine Return `! -- CW -- -CWR-- Soil, Waste, or TamW * (Above* Grade) ' ' SoiL Waste, of Leader (Below Grade) Voit . Cold Water Hot Water Hot Water Retain Fire Tin* Gas Add Waste Drinking Water Flow DrinkingWater Return Vacuum Cleaning Compressed'Air Sprinkler* Main Supplies Branch and Head Drain ^(fnt Check Valve ' Extracted from: Americas Standard Qraphjeal Symbols for Pina Fittings, Valves, and Piping (ASA 232X3-1M9) and American Standard Graphical Symbolsfar Heating, Ventilating. d * (A8A 232X4-1949} with the {mb mrwinaof the publisher, Tba AmericanSociety of Meefaankal Eug>- Abbreviations and Symbols i 969 AngleCheck Valve StopCock ^ Valve, Diaphragm Valve, Fbat'Operated Gate Valvei- Elevation Gate Valve, Plan Gate Valve,-Motar Operated Angle Gate Valve, Elevation Angle Gate Valve, Plan Globe Valve, Elevation Globe Valve, Plan Globe Valve, Motor Operated Angle Globe Valve, Elevation Angle,Globe Valve, Plan Valve, Lock and'Shield Valve,-Air Line ; ! Water Regulating Valve, Pressure Operated : fitting* (Continued) Elbow, 450 r^ Elbow, turned tip Elbow, turned down -C3- . 1 ImJ Elbow, reducing Elbow, .base ' -........ Elbow, long radius - Flanpe / Sersw'" ~Wdd / "t GH-- H-- SH- G-fl-- G-t- G-*r~ f*". -B-t -4 ft =3--I>t3--` ^ **" ...... "@=3- = ---- Elbow, double branch -y- Elbow, side outlet, outlet up r~.r~. Elbow, side outlet, outlet down r~ r~ Flange, expansion joint iE^I- - Flange, reducing' Joint HD-- Reducer, concentric ....... Reducer, eccentric HE=4---------E=+- Sleeve Tee--- -A*- -At- 4 k Valve, Quick Opening Safety Valve ' Kttmpf' Bushing CroeB EHbow, 90 .! 7 Tee, outlet up :** ^ new- &TSW , Wdd -o- --HH-- 4- *r~ r~ Tee, outlet down!- : "I tr*N/ s ' 1i 'i ' r\ -r-\ Tee, side outlet, outlet-up -------- HsH-- Tee, side outlet, outlet down |^j |^j - Tee, single sweep