2000 Hook-up Book - Spirax Sarco

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HOOK-UP DIAGRAMS 92 Figure II-18 25 BP Back Pressure Controls used to Restrict Supply to Low Priority Uses at Times of Overload Pilot Operated Back Pressure Valve Steam to Non-essential Service Steam Supply from Boiler Strainer Header At times of peak draw off, boilers which have sufficient capacity to meet average load conditions may become overloaded. This can cause carryover and priming, or even lockout of boilers on low water. The pressure in the steam lines falls and essential services may be interrupted. The use of back pressure controls in the supplies to non-essential loads allows these to be automatically shut down, in order of priority, at peak load times while maintaining supply to more important loads. Strainer Figure II-19 Reducing Steam Pressure Using 25PA Control Valve with Remote Air Valve Steam Supply Moisture Separator Strainer Spira-tec Loss Detector Strainer Float & Thermostatic Steam Trap Air Loaded Pilot Air Operated Control Valve Check Valve 10 Pipe Diameters Minimum from Valve Outlet Pressure Sensing Line Pitch Down Pilot Operated Pressure Reducing and Back Pressure Valve Spira-tec Loss Detector Steam to Priority Use Thermo- Dynamic Steam Trap with Integral Safety Valve Filter/Regulator Drip Pan Elbow Safety Valve Reduced Steam Pressure Air Supply Drip Pan Elbow Reduced Steam Pressure to Non-essential Service Depending on pilot selected, reduced steam pressure will be approximately 1:1, 4:1 or 6:1 times the air loading pressure sent to the pilot.
Figure II-20 Typical Pneumatic Single Stage Pressure Reducing Valve Station Steam Supply Figure II-22 Hook-up for 25 TRM Temperature Control Remotely Mounted (within 15 ft. of Main Valve) Steam Supply Supply Air Moisture Separator Sensor Liquid in/out Moisture Separator Strainer Strainer Strainer Float & Thermostatic Steam Trap Vacuum Breaker Figure II-21 Pneumatic Temperature Control of Heat Exchanger Strainer Float & Thermostatic Steam Trap Check Valve Pneumatic Control Valve 1/2" Pipe Control Signal Controller Pneumatic Control Valve with Positioner Control Signal Supply Air Heat Exchanger Check Valve Strainer Float & Thermostatic Steam Trap Strainer Spira-tec Loss Detector Main Control Valve Supply Air Noise Diffuser (if required) Check Valve Controller Moisture Separator Strainer Float & Thermostatic Steam Trap Spira-tec Loss Detector Check Valve 5/16" Copper Tubing or 1/4" Pipe Remote Temp. Pilot Safety Valve Float & Thermostatic Steam Trap Regulated Steam to Process Sensor Drip Pan Elbow Reduced Steam Pressure Check Valve Steam Supply 93 HOOK-UP DIAGRAMS
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DESIGN OF FLUID SYSTEMS HOOK-UPS
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Spirax Sarco Spirax Sarco is the re
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Section 1: System Design Informatio
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SYSTEM DESIGN 2 The Working Pressur
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SYSTEM DESIGN 4 Sizing Steam Lines
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SYSTEM DESIGN 6 Sizing Superheated
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SYSTEM DESIGN 8 Draining Steam Main
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SYSTEM DESIGN 10 Draining Steam Mai
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SYSTEM DESIGN 12 Steam Tracing The
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SYSTEM DESIGN 14 Steam Tracing Sizi
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SYSTEM DESIGN 16 Steam Tracing Trac
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SYSTEM DESIGN 18 Steam Tracing A si
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SYSTEM DESIGN 20 Pressure Reducing
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SYSTEM DESIGN 22 Parallel and Serie
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SYSTEM DESIGN 24 How to Size Temper
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SYSTEM DESIGN 26 Temperature Contro
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SYSTEM DESIGN 32 Makeup Air Heating
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SYSTEM DESIGN 34 Draining Temperatu
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SYSTEM DESIGN 36 Draining Temperatu
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SYSTEM DESIGN 38 Steam Trap Selecti
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SYSTEM DESIGN 40 Steam Trap Selecti
Page 48 and 49: SYSTEM DESIGN 42 Flash Steam Flash
Page 50 and 51: SYSTEM DESIGN 44 Flash Steam Flash
Page 52 and 53: SYSTEM DESIGN 46 Condensate Recover
Page 54 and 55: SYSTEM DESIGN 48 Condensate Pumping
Page 56 and 57: SYSTEM DESIGN 50 Clean Steam Printi
Page 58 and 59: SYSTEM DESIGN 52 Clean Steam Overal
Page 60 and 61: SYSTEM DESIGN 54 Clean Steam Figure
Page 62 and 63: SYSTEM DESIGN 56 Testing Steam Trap
Page 64 and 65: SYSTEM DESIGN 58 Spira-tec Trap Lea
Page 66 and 67: SYSTEM DESIGN 60 Steam Meters Densi
Page 68 and 69: SYSTEM DESIGN 62 Compressed Air Sys
Page 70 and 71: SYSTEM DESIGN 64 Compressed Air Sys
Page 72 and 73: SYSTEM DESIGN 66 Compressed Air Lin
Page 74 and 75: SYSTEM DESIGN 68 Typical Steam Cons
Page 76 and 77: SYSTEM DESIGN 70 Specific Heats and
Page 78 and 79: SYSTEM DESIGN 72 Specific Heats and
Page 80 and 81: SYSTEM DESIGN 74 Conversions To Con
Page 82 and 83: SYSTEM DESIGN 76 Flow of Water thro
Page 84 and 85: SYSTEM DESIGN 78 Moisture Content o
Page 86 and 87: SYSTEM DESIGN 80 ANSI Flange Standa
Page 89 and 90: HOOK-UP APPLICATION DIAGRAMS Sectio
Page 91 and 92: Figure II-3 Draining and Air Ventin
Page 93 and 94: Figure II-8 Draining Steam Main whe
Page 95 and 96: Figure II-12 Typical Pressure Reduc
Page 97: Figure II-16 Installation of Pressu
Page 101 and 102: Condensate Return Steam Supply Stea
Page 103 and 104: Steam Supply Steam Supply Figure II
Page 105 and 106: Figure II-31 Temperature Control of
Page 107 and 108: Elevated or Pressurized Return P 2
Page 109 and 110: Figure II-39 Controlling Temperatur
Page 115 and 116: Figure II-50 Trapping Small Utensil
Page 117 and 118: Figure II-55 Draining and Air Venti
Page 119 and 120: Figure II-59 Air Venting and Conden
Page 121 and 122: Evaporator Pressure Figure II-64 Dr
Page 123 and 124: Figure II-68 Installation of Pump/T
Page 125 and 126: Figure II-73 Draining Small Condens
Page 127 and 128: Figure II-78 Flash Steam Recovery a
Page 129 and 130: Figure II-80 Heating Water using Re
Page 131 and 132: Figure II-82 Recovery of Flash Stea
Page 133 and 134: Figure II-84 Flash Steam Condensing
Page 135 and 136: Figure II-87 Tank Sterilization Cle
Page 137 and 138: Steam Supply Figure II-93 Typical S
Page 139 and 140: Figure II-97 Hand Operated Rotary F
Page 141 and 142: Figure II-102 Freeze Proof Safety S
Page 143 and 144: Figure II-106 Continuous Boiler Blo
Page 145 and 146: Figure II-111 Controlling Temperatu
Page 147 and 148: 141
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PRODUCT INFORMATION Section 3
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Steam Traps • Balanced Pressure T
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147
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Subject Index Safety...............
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Subject Index Radiation—Baseboard
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Argentina Spirax Sarco S.A. Ruta Pa
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2000 Hook-up Book - Spirax Sarco

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