Gestra Products Technical - Control And Power

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Programme-Controlled Blowdown Systems Description A.short.boiler.blowdown.is.performed.by.quickly.opening.the.blowdown.valve..This.creates.a.short-term.low-pressure.area.around.the. blowoff.opening.at.the.bottom.of.the.boiler,.causing.a.suction.effect. that.removes.accumulated.sludge.and.sediments.that.have.settled.out. in.the.lower.part.of.the.boiler. The.suction.effect.of.an.intermittent.blowdown.is.only.effective.at.the. moment.when.the.valve.is.being.opened..For.this.reason.the.valve. should.only.be.opened.for.approx..2.seconds..Longer.opening.periods. waste.boiler.water. For.the.closing.process.the.design.of.the.valve.is.of.great.importance.. The.closing.force.of.the.spring.of.the.intermittent.blowdown.valves. (M)PA.is.increased.by.the.boiler.pressure,.which.means.that.the.valve. is.in.a.good.condition.for.breaking.up.any.dirt.particles.settled.on.the. valve.seat/plug,.thus.ensuring.a.positive.shutoff.. The.service.life.of.the.valve.seat/plug.is.further.increased.by.the. pressure.reduction.that.takes.place.in.the.radial.stage.nozzle.installed. downstream.of.the.valve..The.time.interval.between.bottom.blowdown.processes.can.only.be.calculated.indirectly.by.taking.the.boiler. .efficiency,.the.feedwater.quality.and.the.admissible.boiler.water. .quality.into.account. Controls Three-Way Solenoid Valve Max. service pressure [bar] Strainer 122 Min. differential pressure [bar] Application Type Design Interval time Lrr 1-40 TA 5 TA 6 TA 7 Continuous/intermittent.blowdown.controller.for.installation.in. control.cabinet,.with.strainer.and.solenoid.valve Cycling.timer.PRS.7.as.plug-in.unit.in.plastic. case,.strainer,.solenoid.valve Cycling.timer.PRS.7.in.sheet-steel.case,.strainer,.solenoid. valve,.all.component.parts.assembled.and.interconnected.on.a. mounting.panel Cycling.timer.PRS.8.integrated.in.solenoid.. valve.plug,.strainer,.solenoid.valve Connection protection 16. 1) min..0.5 ¼".BSP IP.65 1 ) Max. admissible pressure for diaphragm actuator: 6 bar Body Material Filter Connection Mesh size [mm] Gun.metal.Rg.5 1.4571 ½".BSP 0.5 In.steam.boiler.plants.operating.without.constant.supervision... Automation.of.intermittent.blowdown.by.generating.electric.pulses. to.initiate.a.blowdown.cycle.via.the.GESTRA.rapid-action.intermittent. blowdown.valve.MPA. If space underneath the boilder is of concern, (M)pAs that can be tilted by 45° are available on request. pulse duration sec Mains voltage a Version b f –. 1.h.–.120.h. 1.–.60 230.V./.50.Hz. – 30.min.–.31.5.h. 1.–.63 230.V./.50.Hz. – 30.min.–.31.5.h 1.–.63 230.V./.50.Hz – 30.min.–.10.h 0.5.–.10 230.V./.50.Hz – – Version a. =. Field.case b. =. Plug-in.unit.in.plastic.case c. =. 19".slide-in.unit e. =. Case.for.panel.mounting f. =. Integrated.in.solenoid.. . . valve.plug –. –. .
Programme-Controlled Blowdown Systems Lrr 1-40 TA 5 TA 6 TA 7 Solenoid. valve PRS.7 Pressure.. reducing.station GAV......MPA GAV......MPA PRS.8 LRR.1-40 Pressure.. reducing.station GAV......MPA GAV......MPA Strainer Strainer PRS.7 Pressure.. reducing.station Strainer Pressure. reducing.. station Type DN pN Stock code TA 5 3602040 pressure reducing station 146474 MpA 46
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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
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Thermostatic Steam Traps BK with Du
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Thermostatic Steam Traps MK with Me
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Ball-Float Traps UNA PN 1 - PN 1 0
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Ball-Float Traps UNA PN 1 - PN Capa
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Thermodynamic Steam Traps DK PN 0,
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Steam Traps for Special Application
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Steam Traps for Special Application
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Steam Trap Units ECONOline for UNIV
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Testing Steam Traps Like any other
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Steam Trap Monitoring Equipment Sys
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Condensate Collector and Steam Mani
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GESTRA DISCO Non-Return Valves 30 G
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DISCO ® Non-Return Valves RK, PN 6
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DISCOCHECK ® Dual-Plate Check Valv
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DISCOCHECK ® Dual-Plate Check Valv
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DISCO ® Swing Check Valves CB DN 5
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Swing Check Valves WB without sprin
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NAF-Check Valves DN 40 - 1000 mm, P
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GESTRA Control Valves ZK 54 GESTRA
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Cooling Water Control Valves CW GES
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Return-Temperature Control Valves B
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Return-Temperature Control Valves B
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Self-Acting Pressure Control Pressu
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Self-Acting Temperature Controllers
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Control Valves with Electric and Pn
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Control Valves ZK with Radial Stage
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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
Page 108 and 109: Temperature Control Conventional Tr
Page 110 and 111: Conductivity Monitoring Basic Princ
Page 112 and 113: Conductivity Spector Bus/Compact Lr
Page 114 and 115: Conductivity Monitoring with Manual
Page 116 and 117: Conductivity Monitoring with Manual
Page 118 and 119: Ancillaries: Level Pots and Portabl
Page 120 and 121: Continuous Blowdown Valves 120 L BA
Page 124 and 125: Rapid-Action Intermittent Blowdown
Page 126 and 127: Contamination Detectors for Condens
Page 128 and 129: Ingress of Oil in Cooling Water Sys
Page 130 and 131: Flowmeters for Steam, Gases and Liq
Page 132 and 133: GESTRA SPECTOR Family SpECTorcom/co
Page 134 and 135: Condensate Recovery and Return Syst
Page 136 and 137: Closed-Type Condensate Recovery and
Page 138 and 139: Steam Powered Condensate Return Tan
Page 140 and 141: Steam Regenerators Steam regenerato
Page 142 and 143: Flash Vessels Type VD Flash Vessels
Page 144 and 145: Condensate Dampening Pot ED Technic
Page 146 and 147: Controls Pump Controls Function The
Page 148 and 149: Questionnaire for preparing offers
Page 156 and 157: 156 Our Mobile Testing Station For
Page 158 and 159: Technical Advice and Training Semin
Page 160 and 161: Useful Conversions MASS 1 kilogramm
Page 162 and 163: EC Pressure Equipment Directive (PE
Page 164 and 165: EC Pressure Equipment Directive (PE
Page 166 and 167: Combined Imperial and S. I. Steam T
Page 168 and 169: DIN Material Reference Chart 168 EN
Page 170 and 171: 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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