Gestra Products Technical - Control And Power

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Return-Temperature <strong>Control</strong> Valves BW KALORIMAT 58 L BW 31, DN 15–25 mm External setting device for BW 31 Setting device for BW 31A Features of the BW series Direct acting proportional controller for maintaining constant return temperatures. Used for regulating large heating systems and tracing systems, or for the temperature control of individual heat exchangers (washing baths, chemical and galvanic baths). Straight-through valve with balanced valve sleeve. Closing temperature set at our works. Valves with external setting device available on request. Also suitable for a supply system tailored to the needs of consumers that are installed in parallel Application BW 31 for hot water BW 31 A for thermal oils Specification*) Type DN [mm] PN ∆PMX [bar] EN Materials ASTM Pressure / Temperature PMA / TMA PMA / TMA BW 31 15-25 40 6 1.0460 A 105 1 ) 37.3 bar/100 °C 23.1 bar/400 °C BW 31 40 25 6 1.0460 A 105 1) 23.3 bar/100 °C 14.4 bar/400 °C BW 31A 15-25 40 6 1.0460 A 105 1 ) 30.2 bar/200 °C 23.1 bar/400 °C BW 31A 40 25 6 1.0460 A 105 1 ) 19.4 bar/200 °C 14.4 bar/400 °C 1) ASTM neares equivalent is statet for guidance only. Physical and chemical properties comply with EN. *) For more information on pressure/temperature ratings and end connections see data sheet. End Connections and Overall Lengths L Type Connections Overall length L [mm] DN 15 DN 20 DN 25 DN 40 1/ 2 " 3/ 4 " 1" 1 1/ 2 " BW 31 Flanged EN PN 25 150 150 160 200 Flanged ASME 150 150 150 160 200 Screwed sockets 95 95 95 – BW 31A Flanged EN PN 25 150 150 160 200 Flanged ASME 150 150 150 160 200 Screwed sockets 95 95 95 – Adjustable closing temperatures (without external setting device) Adjustable range DN 15 mm DN 20 mm DN 25 mm DN 40 mm Type 1/ 2 " 3/ 4 " 1" 1 1/ 2 " BW 31 60 °C - 130 °C 40 °C - 115 °C 40 °C - 115 °C 50 °C - 110 °C BW 31A 120 °C - 270 °C 100 °C - 280 °C 100 °C - 280 °C 100 °C - 270 °C Adjustable closing temperatures (with external setting device) BW 31 60 °C - 130 °C 40 °C - 115 °C 40 °C - 115 °C 50 °C - 110 °C BW 31A 90 °C - 270 °C 70 °C - 270 °C 70 °C - 270 °C 70 °C - 270 °C
Return-Temperature <strong>Control</strong> Valves BW KALORIMAT Capacity Charts ∆t = temperature difference in Kelvin [K] between closing temperature (temperature at which the valve is closed) and return temperature. BW 31, DN 15 BW 31, DN 20 and 25 Durchsatz Capacity BW 31, DN 40 Durchsatz Capacity 10000 8000 6000 4000 3000 2000 1000 800 600 500 400 300 200 100 80 60 50 40 50000 20000 10000 8000 6000 4000 3000 2000 1000 800 600 500 400 300 200 100 6000 5000 4000 3000 2000 1000 800 600 500 400 300 200 100 80 60 50 40 30 20 10 8 6 5 25000 20000 10000 8000 6000 5000 4000 3000 2000 1000 800 600 500 400 300 200 100 80 60 50 40 30 ∆P Fühlstrommenge bei geschlossenem Regler 0,1 0,2 0,3 0,4 0,6 0,8 1 2 3 4 5 6 ∆P Bleed flowrate when controller is closed Fühlstrommenge bei geschlossenem Regler 0,1 0,2 0,3 0,4 0,6 0,8 1 2 3 4 5 6 2 3 4 5 6 8 10 20 30 40 50 60 80 100 Bleed flowrate when controller is closed 2 3 4 5 6 8 10 20 30 40 50 60 80 100 ∆ t = 35 K ∆ t = 30 K ∆ t = 25 K ∆ t = 20 K ∆ t = 15 K ∆ t = 10 K ∆ t = 5 K ∆ t = 0 K ∆ t = 30 K ∆ t = 25 K ∆ t = 20 K ∆ t = 15 K ∆ t = 10 K ∆ t = 5 K ∆ t = 0 K Durchsatz Capacity 20000 10000 8000 6000 4000 3000 2000 1000 800 600 500 400 300 200 100 80 60 50 40 10000 8000 6000 5000 4000 3000 2000 1000 800 600 500 400 300 200 100 80 60 50 40 30 20 Fühlstrommenge bei geschlossenem Regler 0,1 0,2 0,3 0,4 0,6 0,8 1 2 3 4 5 6 ∆P Bleed flowrate when controller is closed 2 3 4 5 6 8 10 20 30 40 50 60 80 100 ∆ t = 40 K ∆ t = 30 K ∆ t = 20 K ∆ t = 15 K ∆ t = 10 K ∆ t = 5 K ∆ t = 0 K 59 A4-A8
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GESTRA Technical Information Steam
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GESTRA Steam Traps and Steam Trap M
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For steam and energy management, we
Page 7 and 8: Thermostatic Steam Traps BK with Du
Page 9 and 10: Thermostatic Steam Traps MK with Me
Page 11 and 12: Ball-Float Traps UNA PN 1 - PN 1 0
Page 13 and 14: Ball-Float Traps UNA PN 1 - PN Capa
Page 15 and 16: Thermodynamic Steam Traps DK PN 0,
Page 17 and 18: Steam Traps for Special Application
Page 19 and 20: Steam Traps for Special Application
Page 21 and 22: Steam Trap Units ECONOline for UNIV
Page 23 and 24: Testing Steam Traps Like any other
Page 25 and 26: Steam Trap Monitoring Equipment Sys
Page 27: Condensate Collector and Steam Mani
Page 30 and 31: GESTRA DISCO Non-Return Valves 30 G
Page 32 and 33: DISCO ® Non-Return Valves RK, PN 6
Page 44 and 45: DISCOCHECK ® Dual-Plate Check Valv
Page 46 and 47: DISCOCHECK ® Dual-Plate Check Valv
Page 48 and 49: DISCO ® Swing Check Valves CB DN 5
Page 50 and 51: Swing Check Valves WB without sprin
Page 52 and 53: NAF-Check Valves DN 40 - 1000 mm, P
Page 54 and 55: GESTRA Control Valves ZK 54 GESTRA
Page 56 and 57: Cooling Water Control Valves CW GES
Page 60 and 61: Return-Temperature Control Valves B
Page 62 and 63: Self-Acting Pressure Control Pressu
Page 64 and 65: Self-Acting Temperature Controllers
Page 66 and 67: Control Valves with Electric and Pn
Page 68 and 69: Control Valves ZK with Radial Stage
Page 70 and 71: Control Valves ZK with Radial Stage
Page 72 and 73: Strainers GSF H H 1 H H 1 72 B S
Page 74 and 75: Stop Valves GAV H 1 74 L1 Stop Valv
Page 76 and 77: SPECTOR Product Range GESTRA’s SP
Page 78 and 79: How to Read Type Codes GESTRA Type
Page 80 and 81: GESTRA Steam Plant D 80 T P S A J B
Page 82 and 83: Fundamental Principles of Measureme
Page 84 and 85: Type Approvals at a Glance GESTRA B
Page 86 and 87: Type Approval Nos. at a Glance Type
Page 88 and 89: Level Limitation Low-Level Limiter
Page 90 and 91: Description 1. Conductivity Measure
Page 92 and 93: SPECTORcompact Where formerly two d
Page 94 and 95: Self-Monitoring Low/High-Level Alar
Page 96 and 97: Modulating Level Control - Conventi
Page 98 and 99: Accessories for Liquid-Level Alarms
Page 100 and 101: Level Probes and Control Units for
Page 102 and 103: Marine Applications Level Electrode
Page 104 and 105: GESTRA Equipment for Energy Supply
Page 106 and 107: Temperature Control Bus NrS 1-40.1
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Temperature Control Conventional Tr
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Conductivity Monitoring Basic Princ
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Conductivity Spector Bus/Compact Lr
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Conductivity Monitoring with Manual
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Conductivity Monitoring with Manual
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Ancillaries: Level Pots and Portabl
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Continuous Blowdown Valves 120 L BA
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Programme-Controlled Blowdown Syste
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Rapid-Action Intermittent Blowdown
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Contamination Detectors for Condens
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Ingress of Oil in Cooling Water Sys
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Flowmeters for Steam, Gases and Liq
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GESTRA SPECTOR Family SpECTorcom/co
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Condensate Recovery and Return Syst
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Closed-Type Condensate Recovery and
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Steam Powered Condensate Return Tan
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Steam Regenerators Steam regenerato
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Flash Vessels Type VD Flash Vessels
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Condensate Dampening Pot ED Technic
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Controls Pump Controls Function The
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Questionnaire for preparing offers
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156 Our Mobile Testing Station For
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Technical Advice and Training Semin
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Useful Conversions MASS 1 kilogramm
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EC Pressure Equipment Directive (PE
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EC Pressure Equipment Directive (PE
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Combined Imperial and S. I. Steam T
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DIN Material Reference Chart 168 EN
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Technical Literature Technical Docu
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Index by Product Name Product Type
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Index by Product Name Product Type
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Index by Product Code Type Product
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Note: Responable care has been take
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