Heater Catalog - Watlow

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Tubular HeatersWATROD 3CWATROD 3BWATROD Single/Double-Ended HeatersOptionsMoisture Resistant SealsCeramic-to-Metal End-SealSheath DiameterBVaries withEnd Seal TypeACWATROD’s MgO insulating material is hygroscopic.To control the rate of moisture entering the heater, anappropriate moisture seal must be used. Choosing thecorrect seal is important to the life and performance ofthe heater. All materials have varying rates of gas vaportransmission. Be sure the maximum continuous usetemperature is not exceeded at the seal location. Mostend seals are applied with a small cavity in the end ofthe heater. The seal will also help prevent arcing at theterminal endsCeramic-to-metal end-seals with threaded studterminations provide an air-tight seal for continuousterminal temperatures up to 500°F (260°C). Watlow doesnot recommend this seal if terminations are exposed totemperatures exceeding 500°F (260°C).SheathDiameter A B C Threadin. (mm) in. (mm) in. (mm) in. (mm) Size0.260 (6.6) 1 11 /16 (42.9) 1 /2 (13) 13 /32 (10.32) #8-320.315 (8.0) 1 7 /8 (47.6) 1 /2 (13) 13 /32 (10.32) #10-320.430 (10.9) 2 1 /8 (54.0) 1 /2 (13) 13 /32 (10.32) # 1 ⁄4-28Zoned HeatersSingle zone heaters are only available.External FinishesBright AnnealingBright annealing is a process that produces a smooth,metallic finish. It is a special annealed finish created in anon-oxidizing atmosphere. This finish is popular in thepharmaceutical and food and beverage markets.To order, specify bright annealing.PassivationDuring the manufacturing process, particles of iron or toolsteel may become embedded in the stainless steel oralloy sheath. If not removed, these particles may corrode,produce rust spots and/or contaminate the process. Forcritical sheath applications, passivation will remove freeiron from the sheath.To order, specify passivation.64 WATLOW ®
Tubular HeatersWATROD Single/Double-Ended HeatersOptions (Continued)End-Seal OptionsPart UL ® Max. Cont. UseEnd-Seal Number Color Recognition Temperature Typical or General Usage/ApplicationStandard Epoxy EC Cream Yes 194°F (90°C) Long term stable insulation resistanceIntermediate Epoxy EB Gray Yes 356°F (180°C) Long term stable insulation resistanceHigh-Temp. Epoxy HTE Amber No 450°F (232°C) Long term stable insulation resistanceSilicone Resin SR Clear Yes 221°F (105°C) General usage on tubular products - porousSilicone Fluid SF Clear No 392°F (200°C) Moisture resistance of the MgO, or high temperatureceramic seal (storage only) - porousLavacone LC Dark Brown Yes 221°F (105°C) Porous seal for the FIREBARSilicone Rubber RTV RTV Red-Orange Yes 392°F (200°C) General usage on FIREBAR applications - porousHigh-Temperature HTC White Yes 2800°F (1538°C) Very high-temperature applications - for extremely low vaporCeramictransmission rateWATLOW ®65
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Table of ContentsWhat type of heate
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Watlow’s Lead Time OptionsTo rema
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Heater Selection MatrixHeating Liqu
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Heater Selection MatrixHeating With
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Cartridge/Insertion HeatersMax. Ope
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Cartridge/Insertion HeatersFIREROD
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Page 21 and 22: Cartridge/Insertion HeatersMin. No-
Page 35 and 36: Cartridge/Insertion HeatersExtended
Page 49 and 50: Cartridge/Insertion HeatersMetric F
Page 59 and 60: Tubular HeatersMax. Operating Typic
Page 61 and 62: Tubular HeatersWATROD Single/Double
Page 63: 1" A1"Tubular HeatersWATROD Single/
Page 69 and 70: Tubular HeatersWATROD 1- 9WATROD 1-
Page 71 and 72: WATROD 1- 19Tubular HeatersWATROD S
Page 73 and 74: R 2R 2BWATROD 1- 31Tubular HeatersW
Page 75 and 76: figure 47 newTubular HeatersWATROD
Page 77 and 78: WATROD 2BTubular HeatersWATROD Sing
Page 79 and 80: Tubular HeatersThreaded Stud Termin
Page 81 and 82: Tubular HeatersExtendedCapabilityEx
Page 87 and 88: Tubular HeatersWATROD Double-Ended
Page 89 and 90: Tubular HeatersExtendedCapabilityWA
Page 91 and 92: Tubular HeatersExtendedCapabilityWA
Page 93 and 94: Tubular HeatersFIREBAR ® Single/Do
Page 95 and 96: 1" 1" (25 (25 mm) mm)Min. Min. No N
Page 97 and 98: DDTubular HeatersFIREBAR Single/Dou
Page 99 and 100: Tubular HeatersFIREBAR Single/Doubl
Page 103 and 104: Tubular HeatersAFIREBAR Single/Doub
Page 113 and 114: Tubular HeatersFINBAR Single-Ended
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Flexible HeatersMax. Operating Typi
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Flexible HeatersFlexible Shapes and
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Flexible HeatersSilicone Rubber Hea
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Flexible HeatersLine HeatingModular
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Flexible HeatersLine HeatingSTRETCH
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Flexible HeatersLine HeatingSTRETCH
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Flexible HeatersPolyimide HeatersTe
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Flexible HeatersPolyimide HeatersSp
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Flexible HeatersSERIES EHGTechnical
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Flexible HeatersSERIES EHG SL10Tech
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Flexible HeatersSERIES EHG SL10Tech
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Flexible HeatersSERIES EHG CLTechni
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Flexible HeatersSERIES EHG CLTechni
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Immersion HeatersMax. Operating Typ
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Immersion HeatersWATROD and FIREBAR
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Immersion Heaters1" WATROD45⁄8 in
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Immersion Heaters¾ in. NPT Knockou
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Thermowell2.50" WATROD195½ in. Dia
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Immersion Heaters1.25" FIREBAR11WAT
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Immersion Heaters2" WATRODWATROD an
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Stand-offTerminalEnclosureConduitOp
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Direction of FlowImmersion HeatersW
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7½ in. Ref.(191 mm)75⁄8 in.(193.
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5"-150# FLANGEImmersion HeatersTher
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4"-150# FLANGEImmersion HeatersWATR
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6"-150# FIREBAR FLANGEImmersion Hea
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Immersion HeatersExtendedCapability
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Immersion HeatersOver-the-Side Heat
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Immersion HeatersOver-the-Side Heat
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Immersion HeatersFIREROD ® Immersi
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Immersion HeatersFIREROD Immersion
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Circulation HeatersMax. Operating T
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Circulation HeatersSTARFLOW Heaters
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Circulation HeatersWATROD and FIREB
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3½ in.Circulation HeatersWATROD an
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½ in.NPT DrainCirculation HeatersW
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Circulation Heaters2 1/2 NPTSCREW P
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4"-150# 4"-150#FLANGE FLANGE513⁄1
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(163.5 mm)Circulation HeatersB¾ in
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4"-150# 4"-150#FLANGE FLANGE513⁄1
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(163.5 mm)67⁄16 in. Ref.(163.5 mm
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FLANGE½ in.NPT DrainCirculation He
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Fluid Delivery HeatersMax. Operatin
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Fluid Delivery HeatersExtendedCapab
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Fluid Delivery HeatersExtended Capa
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Air HeatersDuct HeatersLDH SERIES a
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Air HeatersDuct HeatersLDH SERIESAp
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Air HeatersDuct HeatersD SERIES®®
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Air HeatersDuct HeatersD SERIES®®
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Air HeatersDuct HeatersMDH SERIESWa
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Air HeatersDuct HeatersMDH SERIESDT
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Air HeatersFinned Heaters375 Finned
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10-24 Threaded Terminals1.18 in.(30
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Air HeatersFinned Heaters375 Finned
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Air HeatersFinned HeatersFINBAR Sin
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Air HeatersEnclosure HeatersWATROD
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Air HeatersEnclosure HeatersSilicon
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Air HeatersEnclosure HeatersSilicon
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High-Temperature HeatersMax. Operat
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High-Temperature HeatersMULTICELL H
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High-Temperature HeatersExtended Ca
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High-Temperature HeatersCeramic Fib
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Specialty HeatersMax. Operating Typ
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Specialty HeatersULTRAMIC ® Advanc
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Specialty HeatersExtendedCapability
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Specialty HeatersThick Film Conduct
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Specialty HeatersExtendedCapability
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Specialty HeatersCoil/Cable Heaters
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Strip/Clamp-On HeatersMax. Operatin
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Strip/Clamp-On HeatersMineral Insul
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½ in.(13 mm) 10-24 Screw Thread¾
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Strip/Clamp-On Heaters375 High-Temp
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(30 mm)A7 ⁄8 in.(22.2 mm)3⁄8 in
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Strip/Clamp-On HeatersExtendedCapab
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Strip/Clamp-On Heaters375 High-Temp
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Strip/Clamp-On HeatersFIREBAR ® Cl
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Band/Barrel HeatersMax. Operating T
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Band/Barrel HeatersMineral Insulate
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wwBand/Barrel HeatersMineral Insula
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Nozzle HeatersMax. Operating Typica
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Nozzle HeatersMineral Insulated (MI
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Nozzle HeatersPre-Coiled Cable Nozz
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Radiant HeatersMax. Operating Typic
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Radiant HeatersRAYMAX ® Panel Heat
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Radiant HeatersRAYMAX Panel Heaters
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2 15 /16 in. (74.6 mm)Radiant Heate
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Thermostats and AccessoriesThermost
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Thermostats and AccessoriesST10 and
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Thermostats and AccessoriesST10 and
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SPSTP1 L1Thermostats and Accessorie
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Thermostats and AccessoriesBulb and
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Thermostats and AccessoriesInternal
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Reference DataReference DataPower C
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Reference DataPower CalculationsCal
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Reference DataPower CalculationsCon
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Reference DataPower CalculationsCon
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Reference DataEquationsOhm’s LawV
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Reference DataWattage RequirementsT
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Reference DataTubular Elements and
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Agency Certifications, Recognition
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IndexIndexProduct Category Index...
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IndexProduct Category Index375 Finn
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IndexPart Number IndexPartPageNumbe
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Terms and Conditions of SaleQuantit
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Heater Catalog - Watlow

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