Document jmwwvgLp8N7YExJ91K6zVEGxO

' _: v`. \ CHAPTER 2 1948 Guide Graphical Symbols for Drawings Refrigerating 94. Thermostat (Self Contained) 0 110. Low Side Float 95,_Thermostat (Remote Bulb) 111. Gage 96.' Pressurestat 97. Hand Expansion Valve --dZl 112. Finned Type Cool ing. Unit, Natural Convection 981 Automatic Expansion Valve 99. Thermostatic Expansion Valve 113. Pipe Coil 114. Forced Convection Cooling Unit 100. Evaporator Press. Regu lating Valve, Throttling -C5-1-Type 101. Evaporator Press. Regu 6lating Valve, Thermo static Throttling Type - ^ 102. Evaporator Press. Regu- r~--| lating Valve, Snap-Ac- _______ L_ tion Valve S--/ 115. Immersion Cooling Unit 116. Ice Making Unit 117. Heat Interchanger 118. Condensing Unit, Air Cooled 103. Compressor Suction i-- Pressure Limiting Valve, I fN Throttling Type V_y 119. Condensing Unit, Water Cooled ) < > s -6=d- 12^ 6_ 104. Hand Shut Off Valve 105. Thermal Bulb 120. Compressor 106. Scale Trap 121. Cooling Tower 107. Dryer 108. Strainer 109. High Side Float -teb 122. Evaporative Condenser 123. Solenoid Valve 124. Pressurestat With High Pressure Cut- . Out Abbreviations and Symbols_________ : 21 IDENTIFICATION OF PIPING SYSTEMS BY COLOR 1 The color scheme for identification of piping systems listed in the following table and .shown, in Fig. 1 is reprinted from Part V, Fourth Edition, of the Engineering Standards of the Heating,. Piping and. Air Conditioning Contractors National Association7. All. piping systems are` classified according -to the material carried in 'the pipes and colors are assigned as follows: Class F--Fire-protection D--Dangerous materials S--Safe Materials and, when required Color Red Yellow or Orange Green (or the achromatic colors, white, black, gray or aluminum) P--Protective materials V--Extra valuable materials Bright blue Deep purple rSee Scheme for Identification of Piping Systems, A13-1928, American Standards Association.