SCREWPLUG HETERS
SCREWPLUG HETERS OVERVIEW WTTCO screwplug heaters are comprised of hairpin tubular elements that are brazed or welded into a machined pipe thread fitting, which are then screwed directly through a threaded coupling in the tank wall or vessel, or installed in pipe. WTTCO screwplug heaters are used for heating gases and liquids in tanks or vessels. It is strongly advised, for safety and reliability reasons, to immerse the heated section of the elements in the liquid, which will then be heated through natural convection currents that the elements create. SELECTING WTTCO SCREWPLUG HETER The following recommendations will help you select the appropriate WTTCO screwplug heater that will meet the requirements of your application. Select appropriate screwplug heaters in order to maximize service life. Establish wattage requirement, heater voltage and phase Establish typical temperature range to be reached with the heater. Establish type of solution to be heated (chemical and thermal properties). Establish type of mounting required. Select corrosion-resistant construction materials that will not deteriorate or pollute the liquid. Please note that heaters are not guaranteed against corrosion or extraordinary working conditions, as liquid types, concentrations, and solution temperatures cannot be controlled. High heat-up time requirements will result in higher equipment and operating costs. Screwplug are just a component of a larger system. Proper controls should be included to assure the proper functioning and life longevity of the screwplug immersion heaters. These include high limit cutouts, temperature controls as well as level controls that could influence warranty issues. WRNING RISKS OF FIRE ND EXPLOSION If used around explosive or combustible materials, screwplug heaters can sometimes be defective during normal use and can start a fire. Please follow these instructions to prevent risks of explosion and fire: Do not use with explosive or combustible materials Follow fire prevention precautions Call us at.00.92.2 to get appropriate installation instructions FETURES KEY FETURES NPT screwplugs:, ¼, ½, 2, 2½ and 3 Stainless steel, brass or steel screwplugs 0.20, 0.3, 0.3, 0.30 and 0. diameters available Sheath materials: o Copper o Steel o Incoloy o Stainless steel o Titanium Thermostat serves as temperature controls. Verify the temperature and/or pressure safety control to ensure safe operation. bove warnings are included on all WTTCO assembled products that contain these elements and thermostats. road range of standard and custom designs in different sizes, wattage, materials, junction box types, terminal housings and thermostats (including built-in thermostats). vailable explosion and/or moisture resistant terminal enclosures upon request. ENEFITS Energy efficient Easy to regulate Easy to install or remove Easy to maintain uilt solidly Custom-designed Compact Designed and built for safety CS approved 3.
SCREWPLUG HETERS HOW FCTORS Please consider the following factors in order to select the proper screwplug heater: Desired operating temperature mbient temperature Vessel insulation Heating element watt density vailable length within your tank Sheath material (corrosive or non corrosive) o Temperature of the corrodent o Degree of aeration of exposed corrodent o Velocity of the corrodent TO INSTLL THE SCREWPLUG HETER: Pass it through a threaded half coupling in the tank wall, below the minimum liquid level. Place it right above the bottom to avoid sludge build-up. Horizontal installation is advised even if the heater replacement needs the tank to be drained. Vertical installation is also a possible option with special consideration given to the element s specific watt density as well as the level of the liquid to be heated. Please call us at.00.wttco (.00.92.2) for more information before placing your order. HOW TO OPERTE: To transfer heat with a screwplug immersion heater, consideration should be given to the following: To determine the proper heat transfer from the elements to the liquids. Special care should be given to viscous materials (ie. Molasses, sphalt, Oil etc ). Determination of various factors should be made prior to ordering the, to avoid overheating and carbonization of the materials being heated. Heaters that are immersed in liquids (high-calcium water, magnesium content, phosphates or eluate solutions) tend to leave deposits on the sheath of the elements during the heating process. It is highly suggested to clean heaters regularly in order to remove scale build up, which may cause thermal insulation of the elements, reduce service life longevity and premature failure. For further assistance call us at.00.-wttco (.00.92.2) for more information before placing your order. SELECTING YOUR WTTCO SCREWPLUG HETER GENERL RECOMMENDTIONS - SCREWPLUG HETERS - NPT / NPT 2 NPT 2 /2 NPT 3 NPT PPLICTIONS SHETH MTERIL PLUG MTERIL HETER TYPE Water, Freeze protection, Hot water storage, oiler and water heaters, Cooling towers, Solution not corrosive to copper, Food equipment Copper rass WHC Oil, Heavy and non-circulated oils, Solution water, Corrosive solutions, Steam super heating, ir, Gas Incoloy Steel Low watt density WHI Light oils, In forced oil circulation loops Incoloy Steel WHI Mildly corrosive solutions High density incoloy Stainless WHI Fluid heat transfer media, Tar, High to low viscosity petroleum oils, sphalt, Wax, Paraffin, Degreasing solvents, lcohol, Molten salt, Solutions not corrosive to steel Steel Steel WHO Process water, Soap and detergent solutions, Soluble cutting oils, Demineralized or deionized water (passivation advised) Stainless Steel WHI Incoloy and Inconel are registered trademarks of Inco lloys International PLESE CONSULT CORROSION GUIDE RECOMMENDTIONS. 3.2
SCREWPLUG HETERS NPT SCREWPLUG HETERS ( ELEMENT) Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE NPT Screwplug Heaters ( element) WTTS LENGTH STNDRD VOLTGES mm in. PHSE ONLY WTT W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) HIGH - COPPER SHETH / RSS PLUG 0. 0..0..0 0 0 0 20 90 2 30... 0.. 0..9,,. 2. 2. 2. 2. 2. 2. 0 0 0 0 0 0 SX002 SX02 SX002 SX02 SX0202 SX0302 SX002 SX002T SX02T SX002T SX02T SX0202T SX0302T SX002T WHEN ORDERING, PLESE SPECIFY: Quantity, catalogue number, voltage, phase, wattage, material to be heated, flowing or static mediums, types of controls to be applied, type of metal or alloy of the container, any extra features. / NPT SCREWPLUG HETERS (2 ELEMENTS) Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE 2 / NPT Screwplug Heaters (2 elements) WTTS LENGTH STNDRD VOLTGES mm in. PHSE ONLY WTT W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) HIGH - COPPER SHETH / RSS PLUG...3,, 2. 2. 0 0 WHC2E0 WHC220E0 WHC2E0T WHC220E0T MEDIUM - INCOLOY SHETH / STEEL PLUG.0 20 0.0 2.2,, 3.9 3.9 2 2 WHI20EO WHI220EO2 WHI20EOT WHI220EO2T LOW - INCOLOY SHETH / STEEL PLUG 0..2 20 0.0 2.2,, 2.3 2.3 WHI20EO WHI20EO2 WHI20EOT WHI20EO2T WHEN ORDERING, PLESE SPECIFY: Quantity, catalogue number, voltage, phase, wattage, material to be heated, flowing or static mediums, types of controls to be applied, type of metal or alloy of the container, any extra features. 3.3
SCREWPLUG HETERS 2 NPT SCREWPLUG HETERS (2 ELEMENTS)... Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE 3 2 NPT Screwplug Heaters (2 elements) WTTS LENGTH STNDRD VOLTGES mm in. PHSE ONLY WTT W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) HIGH - COPPER SHETH / RSS PLUG..0.0.0.0 0.0 200 200 300 0 0 0 2 0 0.9.9.. 2. 2. 32. 39..2,,, 0, 00,, 0, 00... 9.3.....2 39 3 0 3 WHC2F0 WHC220F0 WHC230F2 WHCF WHC20F22 WHC20F2 WHC20F32 WHC2F39 WHC2F WHC2F0T WHC220F0T WHC230F2T WHCFT WHC20F22T WHC20F2T WHC20F32T WHC2F39T WHC2FT HIGH - INCOLOY SHETH / STINLESS PLUG..0.0.0.0 0.0 200 200 300 0 0 0 2 0 0.9.9.. 2. 2. 32. 39..2,,, 0, 00,, 0, 00... 9.3.....2 39 3 0 3 WHI2FX0 WHI220FX0 WHI230FX2 WHIFX WHI20FX2 WHI20FX2 WHI20FX32 WHI2FX39 WHI2FX WHI2FX0T WHI220FX0T WHI230FX2T WHIFXT WHI20FX2T WHI20FX2T WHI20FX32T WHI2FX39T WHI2FXT MEDIUM - INCOLOY SHETH / STEEL PLUG..0.0.0 300 0 0 2 0 0.. 2. 32. 39..2,,, 0, 00,, 0, 00 3.9..2.2.2. 2 30 2 2 2 2 WHI2FO2 WHI220FO WHI230FO2 WHIFO32 WHI20FO39 WHI20FO WHI2FO2T WHI220FOT WHI230FO2T WHIFO32T WHI20FO39T WHI20FOT MEDIUM - INCOLOY SHETH / STINLESS PLUG..0.0.0 300 0 0 2 0 0.. 2. 32. 39..2,,, 0, 00,, 0, 00 3.9..2.2.2. 2 30 2 2 2 2 WHI2FX2 WHI220FX WHI230FX2 WHIFX32 WHI20FX39 WHI20FX WHI2FX2T WHI220FXT WHI230FX2T WHIFX32T WHI20FX39T WHI20FXT WHEN ORDERING, PLESE SPECIFY: Quantity, catalogue number, voltage, phase, wattage, material to be heated, flowing or static mediums, types of controls to be applied, type of metal or alloy of the container, any extra features. 3.
SCREWPLUG HETERS 2 NPT SCREWPLUG HETERS (2 ELEMENTS)... Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE 3 2 NPT Screwplug Heaters (2 elements) LENGTH STNDRD VOLTGES WTT WTTS mm in. PHSE ONLY W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) LOW - INCOLOY SHETH / STEEL PLUG.0. 0 0 2 0. 2. 32. 39.,,, 0, 00.. 2. 2. WHI20FO WHI2FO2 WHI220FO32 WHI230FO39 WHI20FOT WHI2FO2T WHI220FO32T WHI230FO39T LOW - INCOLOY SHETH / STINLESS PLUG.0. 0 0 2 0. 2. 32. 39.,,, 0, 00.. 2. 2. WHI20FX WHI2FX2 WHI220FX32 WHI230FX39 WHI20FXT WHI2FX2T WHI220FX32T WHI230FX39T 2 NPT SCREWPLUG HETERS (3 ELEMENTS)... Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE 2 NPT Screwplug Heaters (3 elements) WTTS LENGTH STNDRD VOLTGES mm in. PHSE ONLY WTT W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) HIGH - COPPER SHETH / RSS PLUG..0. 200 300 0 0 0 2.9.. 2. 2. 32.,,, 0, 00,, 0, 00.. 9.3... 3 0 WHC330F0 WHC3F2 WHC30F WHC3F2 WHC390F2 WHC3F33 WHC330F0T WHC3F2T WHC30FT WHC3F2T WHC390F2T WHC3F33T MEDIUM - INCOLOY SHETH / STEEL PLUG.0 0 2 0. 32..2,,, 0, 00,, 0, 00..2. 30 2 2 WHI330FO WHI30FO33 WHI390FO WHI330FOT WHI30FO33T WHI390FOT LOW - INCOLOY SHETH / STEEL PLUG.. 0 2 0. 32. 39.,,, 0, 00. 2. 2. WHI3FO WHI330FO33 WHI3FO0 WHI3FOT WHI330FO33T WHI3FO0T WHEN ORDERING, PLESE SPECIFY: Quantity, catalogue number, voltage, phase, wattage, material to be heated, flowing or static mediums, types of controls to be applied, type of metal or alloy of the container, any extra features. 3.
SCREWPLUG HETERS 2 /2 NPT SCREWPLUG HETERS (3 ELEMENTS)... Refer to PGE 3.2 for the GENERL RECOMMENDTIONS TLE 2 /2 NPT Screwplug Heaters (3 elements) WTTS LENGTH STNDRD VOLTGES mm in. PHSE ONLY WTT W/cm 2 W/in. 2 WITHOUT THERMOSTT WITH THERMOSTT 0 - C (0-20 F) HIGH - COPPER SHETH / RSS PLUG..0..0.0 9 29 20 99 9... 2. 2..0,,, 0, 00,, 0, 00.. 9.3.....2 3 0 3 WHC330G0 WHC3G2 WHC30G WHC3G22 WHC390G2 WHC3G32 WHC30G39 WHC30G WHC330G0T WHC3G2T WHC30GT WHC3G22T WHC390G2T WHC3G32T WHC30G39T WHC30GT HIGH - INCOLOY SHETH / STINLESS PLUG..0..0.0 9 29 20 99 9... 2. 2..0,,, 0, 00,, 0, 00.. 9.3.....2 3 0 3 WHI330GX0 WHI3GX2 WHI30GX WHI3GX22 WHI390GX2 WHI3GX32 WHI30GX39 WHI30GX WHI330GX0T WHI3GX2T WHI30GXT WHI3GX22T WHI390GX2T WHI3GX32T WHI30GX39T WHI30GXT MEDIUM - INCOLOY SHETH / STEEL PLUG..0. 20 99 9. 2..0,,, 0, 00,, 0, 00..2.2.2. 30 2 2 2 2 WHI330GO WHI3GO2 WHI30GO32 WHI3GO0 WHI390GO WHI330GOT WHI3GO2T WHI30GO32T WHI3GO0T WHI390GOT MEDIUM - INCOLOY SHETH / STINLESS PLUG..0. 20 99 9. 2..0,,, 0, 00,, 0, 00..2.2.2. 30 2 2 2 2 WHI330GX WHI3GX2 WHI30GX33 WHI3GX39 WHI390GX WHI330GXT WHI3GX2T WHI30GX33T WHI3GX39T WHI390GXT LOW - INCOLOY SHETH / STEEL PLUG..0 20 99 9.0,,, 0, 00,, 0, 00 2. 2. 2. WHI330GO32 WHI3GO39 WHI30GO WHI330GO32T WHI3GO39T WHI30GOT LOW - INCOLOY SHETH / STINLESS PLUG..0 20 99 9.0,,, 0, 00,, 0, 00 2. 2. 2. WHI330GX33 WHI3GX39 WHI30GX WHI330GX33T WHI3GX39T WHI30GXT WHEN ORDERING, PLESE SPECIFY: Quantity, catalogue number, voltage, phase, wattage, material to be heated, flowing or static mediums, types of controls to be applied, type of metal or alloy of the container, any extra features. 3.
SCREWPLUG HETERS EXTR FETURES VOLTGE WTTGE LENGTH EXTR HEVY WLL SHETH PSSIVTION WELDED ELEMENTS UILT-IN THERMOSTT UILT-IN THERMOSTT WELL SPECIL THERMOSTT RNGES UILT-IN THERMOCOUPLES TERMINL HOUSINGS PLUG SIZE ND RTINGS SPECIL MTERILS DESCRIPTION WTTCO screwplug heaters are custom-built and supplied with voltages up to 00V. WTTCO screwplug heaters come with standard wattage. If you need to replace your current heater with other wattages, simply select the appropriate WTTCO unit. WTTCO immersed length of heaters: 0 Use internal vessel support if immersed length exceeds 0 Heavy wall sheath (0.09 or 0.0 thickness) is provided in: Incoloy Steel Inconel Stainless steel vailable Incoloy and stainless steel sheathed heaters can be supplied with chemically passivated sheaths. Note: Chemically passivated sheaths are highly corrosion resistant in most applications. Passivation process is carried out through electropolishing. WTTCO stainless steel screwplug heaters can come with passivated wetted surfaces (Teflon on top of the sheath). WHO heaters are made of standard welded elements. WHI heaters are made of elements silver-brazed to the plug (upon request). ll WTTCO screwplug heaters can be supplied with built-in thermostats. Standard built-in thermostats: Single pole device of a maximum of V up to 30 amps. Standard thermostat range: 0 C - C (0 F-20 F) vailable on special request: 00V thermostats mp max. Double pole thermostats uilt-in thermostat wells can be installed upon request. When ordering, please provide length and internal diameter. WTTCO can provide specific thermostats with the following temperature ranges: 0 C to C (0-2 F) 0 C to 20 C (0-0 F) Thermocouples can be mounted to provide sheath limit protection or temperature control. Configured temperature control and power controls are available to meet the requirements of any application. MOISTURE RESISTNT For outdoor applications, WTTCO recommends moisture resistant terminal housings in various sizes. Refer to Figure on Page 3. EXPLOSION-PROOF When operating in an unsafe environment, an explosion-proof housing is mandatory. Refer to Figure. For unsafe locations, please provide: Class Division or zone Group Temperature code Several types of terminal housings used with screwplug heaters are illustrated: (see FIG, FIG 2, FIG 3, FIG on Page 3.) WTTCO elements can be installed in any plug size or rating (special or standard) upon request. Supplied upon request: Special sheath Plug Terminal box materials 3.
SCREWPLUG HETERS TERMINL HOUSING DESCRIPTION FIGURE mm (in.) mm (in.) Standard housing without thermostat 02 () (3) Standard thermostat housing ( pole) 2 02 () 2 () Special thermostat housing 3 0 ( /) 0 () Moisture resistant housing without thermostat 92 (3 /) 0 ( /2) (3) 02 () Moisture resistant housing 92 (3 /) 0 ( /2) (3) 02 () Explosion-proof housing with pole thermostat or without thermostat 92 (3 /) 0 ( /2) (3) 02 () Explosion-proof housing with 2 pole thermostat 92 (3 /) 0 ( /2) (3) 02 () FIG. FIG. 2 FIG. 3 SHOWN WITH OPTIONL EXTERNLLY DJUSTLE THERMOSTT FIG. FIG. 3.
SCREWPLUG HETERS DOMESTIC HETERS WTTCO domestic are outlined in this section. These heaters are first-class quality replacement solutions for all heater applications. PPLICTIONS For domestic and small industrial applications Select tin or zinc plated element if you use an old style resistor type element. Plating decreases galvanic current and prevents corrosion within the tank while increasing the service life of the heater and tank. TLE WTTCO Domestic Immersion Heaters DIM (in.) WTTS VOLTS CTLOG NUMER 2 /2 SQ. FLNGE - TINNED COPPER SHETH (FIG. ) /2 /2 /2 3/ 3/ /2 /2 /2 /2 /2 / / / 3/ 3/ /2 /2 9 /2 9 /2 2 2 / / 00 0 0 0 0 00 00 00 00 000 000 000 000 000 000 000 000 SXQ3 SXQ32 SXQ33 SXQ3 SXQ3 SXQ3 SXQ3 SXQ3 SXQ39 SXQ320 SXQ32 SXQ322 SXQ323 SXQ32 SXQ32 SXQ32 SXQ32 SXQ32 SXQ329 SXQ3220 SXQ322 SXQ3222 SXQ3223 SXQ322 SXQ322 SXQ322 SXQ322 SXQ322 SXQ3229 SXQ3230 SXQ323 SXQ3232 SXQ3233 SXQ323 INVENTORY: THESE HETERS RE NORMLLY STOCKED IN LIMITED QUNTITIES TLE WTTCO Domestic Immersion Heaters DIM (in.) WTTS VOLTS CTLOG NUMER 2 /2 SQ. FLNGE - INCOLOY SHETH (FIG. ) 3/ / 3 / / / 00 000 000 00 00 00 00 00 TPERED RSS PLUG - COPPER SHETH (FIG. 2) /2 /2 /2 /2 / / 0 /2 0 /2 0 /2 /2 /2 /2 /2 /2 /2 9 9 0 3/ 0 3/ 0 3/ / / / / 9 9 20 /2 20 /2 0 3/ 0 3/ 00 00 0 0 0 0 200 200 00 00 00 00 000 000 000 000 000 000 000 000 Table is continued on page 3.0 SXQ SXQ2 SXQ3 SXQ SXQ TX2200 TX22002 TX22003 TX2200 TX2200 TX2200 TX2200 TX2200 TX22009 TX2200 TX220 TX2202 TX2203 TX220 TX220 TX220 TX220 TX220 TX2209 TX22020 TX2202 TX22022 TX22023 TX2202 TX2202 TX2202 TX2202 TX2202 TX22029 TX22030 TX2203 TX22032 TX22033 TX2203 TX2203 TX2203 TX2203 TX2203 TX22039 FIG. FIG. 2 3.9
SCREWPLUG HETERS FIG. 3 TLE 2 Domestic Immersion Heater Thermostats and High Limit with Manual Reset ELECTRICL RTING CIRCUIT OPENS TEMP. F CTLOG NUMER V 2 amp Single Pole Single Throw on temp. rise - 0 WT-22 TLE...continued WTTCO Domestic Immersion Heaters DIM (in.) WTTS VOLTS CTLOG NUMER NON-TPERED RSS PLUG - COPPER SHETH (FIG. 3) V 2 amp Single Pole Double Throw V 2 amp Double Pole Double Throw Circuit on temp. rise Circuit 2 on temp. fall on temp. rise - 0 90 ± WT-23 WT-2 /2 /2 /2 /2 3/ 3/ /2 /2 /2 9 /2 9 /2 / / / /2 3/ 3/ 3/ 3/ /2 /2 9 /2 9 /2 2 / 00 00 0 0 0 0 200 200 00 00 00 00 000 000 000 000 000 000 TX2300 TX23002 TX23003 TX2300 TX2300 TX2300 TX2300 TX2300 TX23009 TX2300 TX230 TX2302 TX2303 TX230 TX230 TX230 TX230 TX230 TX2309 TX23020 TX2302 TX23022 TX23023 TX2302 TX2302 TX2302 TX2302 TX2302 TX23029 TX23030 TX2303 TX23032 FIG. WT-22 FIG. WT-23 FIG. WT-2 ROUND FLNGE - ZINC PLTED COPPER SHETH / 00 TX2032 INVENTORY: THESE HETERS RE NORMLLY STOCKED IN LIMITED QUNTITIES 3.0