Document aB4dVYrXwKp0VDd6bL0KEzgxB

American Society of Heating and Ventilating Engineers Guide, 1930 8. Flanges 9. Screwed union 10. Elbow 11. Elbow--looking up 12. Elbow--looking down 13. Tee 14. Tee--looking up 15. Tee--looking down 16. Gate valve 17. Globe valve 18. Angle valve 19. Angle valve--stem perpendicular 20. Lock shield valve 21. Check valve 22. Reducing valve 23. Diaphragm valve 24. Diaphragm valve--stem perpendicular 25. Thermostat 26. Radiator trap--elevation 524 Hie* t r i i 0S t 0 Si D Chapter 34--Symbols and Abbreviations 27. Radiator trap--plan 28. Expansion joint 29. Column radiator--plan 30. Column radiator--elevation 31. Wall radiator--plan 32. Wall radiator--elevation 33. Pipe coil--plan 34. Pipe coil--elevation 35. Indirect radiator--plan 36. Indirect radiator--elevation -i f=l fl 37. Supply duct--section 38. Exhaust duct--section 39. Butterfly damper--plan (or elevation) 40. Butterfly damper--elevation (or plan) 41. Deflecting damper--square pipe --^ L-- 42. Vanes 43. Air supply outlet 44. Exhaust outlet SYMBOLS AND CROSS-SECTIONS FOR MATERIALS These symbols and cross-sections give a conventional method of distinguishing various materials commonly used, but can only indicate the general character and not complete specification of the material of the parts. They permit of sub-division if found desirable, by making minor changes but maintaining the general characteristics. For simplicity on details where the material is named, sections may be shaded or made as for iron or steel. 525 I