Heater Catalog (Section) - Immersion Heaters - Watlow

Immersion HeatersWATROD and FIREBAR Screw PlugImmersion Heaters2.50" WATRODApplication: Process Water• 2 1 /2 inch NPT screw plug• WATROD elements• With thermostat (DPST)2.50" WATRODNote: Higher amperage products requirea pilot duty thermostat with separatepower controller. Please see followingpages for available heaters withoutthermostats.• General purpose or moisture/explosionresistantenclosure2.50" WATROD1919205½ in. Dia.General (140 mm) Purpose5½ in. Dia.(140 mm)67⁄8 in. Dia.(174.6 mm)67⁄8 in. Dia.(174.6 mm)Moisture/Explosion-Resistant75⁄8 in. Dia.(193.7 mm)85⁄16 in. Dia.(211.1 mm)¾ in. NPT Knockout0.475 in. (12.1 mm) Dia. ElementsThermowell¾ in. NPT 23⁄16 Knockout in. (55.6 mm) Cold (Ref.)0.475 in. (12.1 mm) Dia. Elements"B"Thermowell2½ in.(64 mm)Bundle1½ in. NPT Hubs23⁄16 in. (55.6 mm) Cold (Ref.)"B"0.475 in. (12.1 mm) Dia. ElementsThermowell1½ in. NPT Hubs23⁄16 in. (55.60.475 mm) Cold in. (12.1 (Ref.) mm) Dia. Elements"B" Thermowell2½ in.(64 mm)Bundle2½ in.(64 mm)Bundle2.50" WATROD202½ in.75⁄8 in. Dia.(64 mm)(193.7 mm)Type 4 (30 to 110°F) Type 5A (60 to 250°F) Type 7A (100 to Bundle 550°F)Description Volts kW Ph“B” Dim. Ship Wt. PartPartPart23⁄16 in. (55.6 mm) Cold (Ref.)in. (mm) lbs (kg) Number Del. Number Del. Number85⁄16 in. Dia."B"(211.1 mm) General Purpose EnclosureDel.48 W/in 2240 3.0 3 9 3 /8 (238.1) 7 (4) BLN79G3S4 RS BLN79G3S5A RS BLN79G3S7A RS304 SS Plug3-Alloy 800480 3.0 3 9 3 /8 (238.1) 7 (4) BLN79G5S4 RS BLN79G5S5A RS BLN79G5S7A RSElements 240 4.5 3 12 7 /8 (327.0) 8 (4) BLN712R3S4 RS BLN712R3S5A RS BLN712R3S7A RS(7.5 W/cm 2 ) 480 4.5 3 12 7 /8 (327.0) 8 (4) BLN712R5S4 RS BLN712R5S5A RS BLN712R5S7A RS240 6.0 3 17 3 /8 (441.3) 10 (5) BLN717G3S4 RS BLN717G3S5A RS BLN717G3S7A RS480 6.0 3 17 3 /8 (441.3) 10 (5) BLN717G5S4 RS BLN717G5S5A RS BLN717G5S7A RS240 7.5 3 19 7 /8 (504.8) 12 (6) BLN719R3S4 RS BLN719R3S5A RS BLN719R3S7A RS240 9.0 3 24 7 /8 (631.8) 13 (6) BLN724R3S4 RS BLN724R3S5A RS BLN724R3S7A RS®®48 W/in 2304 SS Plug3-Alloy 800Elements(7.5 W/cm 2 )RAPID SHIP• RS - Next day shipmentup to 5 piecesMoisture/Explosion-Resistant Enclosure 7240 3.0 3 9 3 /8 (238.1) 10 (5) BLN79G3C4 RS BLN79G3C5A RS BLN79G3C7A RS480 3.0 3 9 3 /8 (238.1) 10 (5) BLN79G5C4 RS BLN79G5C5A RS BLN79G5C7A RS240 4.5 3 12 7 /8 (327.0) 11 (5) BLN712R3C4 RS BLN712R3C5A RS BLN712R3C7A RS480 4.5 3 12 7 /8 (327.0) 11 (5) BLN712R5C4 RS BLN712R5C5A RS BLN712R5C7A RS240 6.0 3 17 3 /8 (441.3) 13 (6) BLN717G3C4 RS BLN717G3C5A RS BLN717G3C7A RS480 6.0 3 17 3 /8 (441.3) 13 (6) BLN717G5C4 RS BLN717G5C5A RS BLN717G5C7A RS240 7.5 3 19 7 /8 (504.8) 15 (7) BLN719R3C4 RS BLN719R3C5A RS BLN719R3C7A RS240 9.0 3 24 7 /8 (631.8) 16 (8) BLN724R3C4 RS BLN724R3C5A RS BLN724R3C7A RSNote: All screw plug bundles are designed to fit the inside diameter ofthe equivalent mating coupling. They will not fit into the equivalent pipeinside diameter.7 CSA certified only194 WATLOW ®