Heater Catalog - Watlow

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Strip/Clamp-On Heaters375 High-Temperature Strip HeatersTermination Options (Continued)Metallic Terminal Boxes - VariationsAccessoriesCeramic3 /8" (9.5 mm)Terminal Covers1 1 /2" 3(38.1 mm)/4"(19 mm)1 1 /2"(38.1 mm)7 /8"(22.2 mm)0.020 Tk. 5 Fins Per Inch2"(50.8 mm)2 in. (51 mm)2 in. (51 mm)1½ in. (38 mm)5/16" x 1 /2"(7.9 mm x 12.7 mm)Mtg. Holes1 /2" (12.7 mm)Typ.2 3 /4"(69.8 mm)Heated LengthA1 1 /4"(31.7 mm)Typ.Available on in-line terminals only.Ceramic terminal covers offer a convenient and economicmethod7 /8"to insulate post terminals. They are sized for(22.2 mm)standard length posts with 10-24 screw thread size,supplied as an 7 /8" accessory item and shipped separately.(22.2 mm)Specify Z4918 and quantity.Typ.10-24 Threaded Terminals3 /8"(9.5 mm)1 3 /8"(34.9 mm)2½ in. (64 mm)2½ in. (64 mm)Secondary Insulation Bushings2 in. (51 mm)1 5 /8 in.(41.3 mm)3/8 in. (9.5 mm)1/4 in.-20 x 1 1 /2 in. Threaded Length Screw1/8 in. (3.2 mm)Available on offset terminals from stockand manufactured.Metallic terminal boxes are available from stock on offsetterminals. Terminal boxes act as a safety feature bycovering the terminals. A conduit may be attached to thebox through 7 /8 in. (22.2 mm) diameter holes in the endsof the box. To order, specify terminal box.3/8 in. (9.5 mm)Insulators are suitable when air heating and/or voltageto ground is a concern. A secondary insulation bushingkit, part number Z5230, contains one set of bushings forone heater. To accommodate bushings, 17 /32 x 11 /16 inchdiameter mounting holes must be specified whenordering the heater.484 WATLOW ®
Strip/Clamp-On HeatersExtendedCapabilityExtended Capabilities For375 High-Temperature Strip HeatersOptionsTab RemovalMoisture ProtectionImproved Insulation Resistance Value (IIRV)Treatment—This process coats the MgO insulation.The treated insulation fends off moisture when unheatedfor long periods of time. It is also ideal for heaters thatare exported to customers around the world, where highhumidity may be a problem.Tab removal is available from stock or manufacturedproducts. Length without tabs equals total lengthincluding tabs minus 1 1 /2 in. (38 mm).Ground Studs and Mounting StudsStandard 1 /4-20 x 1 1 /2 in. (38 mm) or M6-1 x 40 steelstuds are welded to the heater. Contact your Watlowrepresentative for exact locations on specific heaters.Flat TabsMounting tabs can be formed flat to allow bar clamping.WATLOW ®485
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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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Cartridge/Insertion HeatersMin. No-
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Cartridge/Insertion HeatersExtended
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Cartridge/Insertion HeatersMetric F
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Tubular HeatersMax. Operating Typic
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Tubular HeatersWATROD Single/Double
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1" A1"Tubular HeatersWATROD Single/
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Tubular HeatersWATROD 1- 9WATROD 1-
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WATROD 1- 19Tubular HeatersWATROD S
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R 2R 2BWATROD 1- 31Tubular HeatersW
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figure 47 newTubular HeatersWATROD
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WATROD 2BTubular HeatersWATROD Sing
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Tubular HeatersThreaded Stud Termin
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Tubular HeatersExtendedCapabilityEx
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Tubular HeatersWATROD Double-Ended
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Tubular HeatersExtendedCapabilityWA
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Tubular HeatersExtendedCapabilityWA
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Tubular HeatersFIREBAR ® Single/Do
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1" 1" (25 (25 mm) mm)Min. Min. No N
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DDTubular HeatersFIREBAR Single/Dou
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Tubular HeatersFIREBAR Single/Doubl
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Tubular HeatersAFIREBAR Single/Doub
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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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Page 457 and 458: Specialty HeatersMax. Operating Typ
Page 459 and 460: Specialty HeatersULTRAMIC ® Advanc
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Page 463 and 464: Specialty HeatersThick Film Conduct
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Page 467 and 468: Specialty HeatersCoil/Cable Heaters
Page 475 and 476: Strip/Clamp-On HeatersMax. Operatin
Page 477 and 478: Strip/Clamp-On HeatersMineral Insul
Page 479 and 480: ½ in.(13 mm) 10-24 Screw Thread¾
Page 481 and 482: Strip/Clamp-On Heaters375 High-Temp
Page 483: (30 mm)A7 ⁄8 in.(22.2 mm)3⁄8 in
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Page 489 and 490: Strip/Clamp-On HeatersFIREBAR ® Cl
Page 491 and 492: Band/Barrel HeatersMax. Operating T
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Page 505 and 506: Nozzle HeatersMax. Operating Typica
Page 507 and 508: Nozzle HeatersMineral Insulated (MI
Page 509 and 510: Nozzle HeatersPre-Coiled Cable Nozz
Page 511 and 512: Radiant HeatersMax. Operating Typic
Page 513 and 514: Radiant HeatersRAYMAX ® Panel Heat
Page 515 and 516: Radiant HeatersRAYMAX Panel Heaters
Page 527 and 528: 2 15 /16 in. (74.6 mm)Radiant Heate
Page 529 and 530: Thermostats and AccessoriesThermost
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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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