pplication irculation Heaters - RMOVL LN HTR SKT aloritech circulation heaters are suitable for use in forced flow and natural flow heating loops where a safe, lean, reliable, and efficient heating source is required. Liquid Heating Virtually any liquid may be heated provided that the system design ensure that the heater vessel remains completely full of liquid when in use. orced flow heating (with circulator pump) is mandatory when heating heavier liquids or heating liquids to high temperatures. Natural flow systems are generally limited to side arm water heating applications where the heater is mounted vertically and the top of the heater is well below the minimum tank liquid level. INSULTION STL SIN VSSL SIN IN ORN WITH SM O STION I, IV OR VIII SLIP-ON OR WL NK LN THR NOZZLS HTIN LMNTS (OPPR OR INOLOY) as Heating In gas heating applications, such as steam superheating, heating compressed air, nitrogen, ammonia, etc., flow must be sufficient to ensure that the maximum allowable vessel and sheath temperatures are not exceeded. I Thermal engineers will assist in the selection of the best heater for your particular application. all, email or write factory, or contact your nearest alroitech representative or distributor. Registration irculation heaters may be classified as boilers or pressure vessels depending on fluid being heated, rating, vessel size, operating pressure and outlet temperature. Registration requirements are imposed by the jurisdiction where the heater is to be installed. I Thermal registered vessels are authorized to bear the S, H or U stamp depending on the ode classification. MOUNTIN RKTS 3/" NPT PLU OR RIN igure 2 - onstruction etails onstruction irculation heaters are essentially flange heaters mounted in welded vessels. Standard sizes use steel vessels fitted with 50 lb. flanges. Units with larger vessels and heavier flanges are available. or closed systems the heaters are designed to Sect. I, IV, or VIII of the SM ode. or high temperature use, heaters can be provided with stainless steel wetted parts and specially designed terminal boxes protected from excessive heat. onsult factory. uilt-in Limits and Thermostats N IS / NPT PLU OR THRMOWLL uilt-in high limits and thermostats are available. Standard built-in thermostat is a one pole device limited to 20V 25 amp. Whenever the heater voltage exceeds 20V or the heater current exceeds 25 amps or for three phase supply, the thermostat is intended for pilot duty only and is not factory wired to the elements. See Section of the aloritech catalog for selection of the contactor and control transformer you may require in these instances. igure - Standard Unit Mounted on Optional Stand aloritech irculation Heaters
Watt ensity Watt density refers to the wattage output of a heater divided by the total surface area of the heated section of all heating elements in the heater. SMNT O HTIN LMNT SUR Installation The heaters are generally suitable for horizontal or vertical vessel orientation as shown in igures 3, and 5. Outlet Note: ll heat produced by the element is transferred to the work. TUULR HTIN LMNT STION It is important to understand the basic terminal difference between an electric immersion heater and a steam or liquid heat exchanger. Unlike the steam or liquid heat exchanger, all of the heat produced by an electric heater will leave the heater. ven though the surface area in contact with the work is fixed, the heating element sheath temperature will continue to rise until the heat produced is equal to the heat transferred to the process. detailed understanding of this behaviour and the system parameters will allow the design of a suitable heater to heat virtually any liquid or gas with the only limitation being its ability to resist corrosion in highly active solutions. s a general rule, low watt density heaters will provide longer service life than high density heaters, especially when the fluid being heated is viscous or stagnant. However, low density heaters are initially more expensive and in larger systems it is best to check with the factory for assistance in optimizing the heater selection. See page 50 for recommended watt densities for some of the more common fluids. UTION - IMPROPR SLTION O WTT NSITY N RSULT IN M TO TH PROUT N ILUR O TH HTR. igure 3 - Liquid Heating or Low Temperature as Heating (Vertical Installation) igure - High Temperature as Heating (Vertical Installation) Outlet inlet Outlet inlet inlet igure 5 - as or Liquid Heating (Horizontal Installation) irculation Heaters I Thermal Technologies Inc.
irculation Heaters ustom esigned ssemblies Skidded circulation heater assemblies are available for process heating in chemical processing, mining, refining, etc. Our complete in-house capability... elements, vessels, N equipped machine shop, panel shop, design... directed by a team of highly skilled professionals ensures that our products will provide value. Registered engineers are available for start-up supervision anywhere in the world. Multiple staged assemblies with control panel, valving, pumps or fans, chillers, expansion tanks, etc. can be engineered and fabricated by I Thermal using state-of-the-art technology and manufacturing procedures If it can be done electronically, chances are we ve done it before. esign proposals are submitted without cost or obligation on receipt of the bid request and specifications. aloritech irculation Heaters
Miniature irculation Heaters Miniature circulation heaters provide an economical source of heat in many applications. In stationary systems, these heaters do not normally require mounting support other than the inlet and outlet piping connections. onstruction The basic construction of this series of heaters is a one inch or one and a quarter inch pipe fitted with a pipe T to accept a suitable screwplug heater. The pipe is insulated with / (32 mm) to /2 (38 mm) of SK insulation protected by a 20-gauge steel casing. Units are available with or without thermostats and with general purpose, moisture resistant or explosion-proof terminal housings. If the outlet liquid or gas temperature exceeds 300 (50 ), use the end away from the terminal box as the outlet. Otherwise, use the outside threaded connection as the system inlet. Type ll wetted parts in brass or copper. Used for heating water, glycol water solutions or other liquids of low viscosity which will not corrode the heater materials. Type Incoloy elements with steel screwplug and vessel. Used for heating oils, low pressure steam, preheating instrument air, etc. Select lower watt density listings for heavier liquids. Special eatures Stainless steel wetted parts Moisture resistant or explosion-proof housings Special wattage (length will increase for same watt density) Special thermostat range 7 3/" (50 mm) " (280 mm) OUTSI THR / (5 mm) INSI THR Miniature irculation Heaters Standard Watt ensity Without Thermostat Voltages 50-250 (0-20 ) Phase only W/cm² W/in² atalog atalog lbs kg Type - opper Sheath (rass Plug & With " NPT onnections).0 20, 280, 20 0P T0P.5-5P T5P 80 2. 2.0-20P T20P 3.2 6 3.0 208,20 30P T30P Type - Incoloy Sheath (Steel Plug & With /" NPT onnections) 0.6 20, 208, 20 5 2.3 206P2 T206P2.0-25 3.9 20P2 T20P2 7.6 8 irculation Heaters I Thermal Technologies Inc.
3 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 3.7 30.7 3.3 7.5 9.3 5.3 37.2 (060) (780) (85) (790) (235) (35) (95) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg 3" - 50 lb langed Steel With " (25 mm) Inlet nd Outlet High ensity - opper Sheath 6.0 60 9.3 3063 NWH-3-306 T3063 08.6 7.0 9.0 55 8.5 3093 NWH-3-309 T3093 05.8 8.0 2.0 30.7 780 3 3 3 3 5 8. 323 NWH-3-32 T323 05.8 8.0 8.0 55 8.5 683 T683 2. 5.0 2.0 5 8. 623 T623 2. 5.0 High ensity - Incoloy Sheath 6.0 60 9.3 I3063 IT3063 08.6 7.0 9.0 55 8.5 I3093 IT3093 05.8 8.0 2.0 30.7 780 3 3 3 3 5 8. I323 IT323 05.8 8.0 8.0 55 8.5 I683 IT683 2. 5.0 2.0 5 8. I623 IT623 2. 5.0 Medium ensity - Incoloy Sheath 3.0 30.6 3033 T3033 08.6 7.0.5 30.7 780 3 3 3 3 27.2 303 T303 05.8 8.0 6.0 27.2 3063 NWHO-3-306 T3063 05.8 8.0 3.0 30.7 780 3 3 3 3 2. 303332 NWHO-3L-303 T303332 05.8 8.0 aloritech irculation Heaters
irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 8.0 30.7 5.7 9. 0.2 6..9 (220) (780) (5) (230) (260) (55) (065) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg " - 50 lb langed Steel With / (38 mm) Inlet nd Outlet High ensity - opper Sheath 2.0 60 8. 62 T62 38.9 63.0 5.0 57 8.8 65 T65. 6.0 30.7 780 3 3 3 3 8.0 55 8.5 68 T68. 6.0 2.0 5 8. 62 T62. 6.0 8.0 60 9.3 98 T98 7.7 67.0 27.0 30.7 780 3 3 3 3 55 8.5 927 T927 9.9 68.0 36.0 5 8. 936 T936 52. 69.0 High ensity - Incoloy Sheath 2.0 60 8. I62 IT62 38.9 63.0 5.0 57 8.8 I65 IT65. 6.0 30.7 780 3 3 3 3 8.0 55 8.5 I68 IT68. 6.0 2.0 5 8. I62 IT62. 6.0 8.0 60 9.3 I98 IT98 7.7 67.0 27.0 30.7 780 3 3 3 3 55 8.5 I927 IT927 9.9 68.0 36.0 5 8. I936 IT936 52. 69.0 Medium ensity - Incoloy Sheath 6.0 30.6 606 T606 38.9 63.0 9.0 30.7 780 3 3 3 3 27.2 609 T609 3.3 65.0 2.0 27.2 62 T62 3.3 65.0 9.0 30.6 909 T909 9.9 68.0 3.5 30.7 780 3 3 3 3 27.2 93 T93 52. 69.0 8.0 27.2 98 T98 5.3 70.0 6.0 60632 T60632 3.3 65.0 30.7 780 3 3 3 3 2. 9.0 90932 T90932 52. 69.0 irculation Heaters I Thermal Technologies Inc.
5 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 5 8.0 30.7 5.7 0.0 0.6 6.7.9 (220) (780) (5) (255) (270) (70) (065) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg 5" - 50 lb langed Steel With (5 mm) Inlet nd Outlet High ensity - opper Sheath 2.0 60 8. 625 T625 38.9 63.0 5.0 57 8.8 655 T655. 6.0 30.7 780 3 3 3 3 8.0 55 8.5 685 T685. 6.0 2.0 5 8. 625 NWH-5-62 T625. 6.0 8.0 60 9.3 985 T985 7.7 67.0 27.0 30.7 780 3 3 3 3 55 8.5 9275 T9275 9.9 68.0 36.0 5 8. 9365 T9365 52. 69.0 High ensity - Incoloy Sheath 2.0 60 8. I625 IT625 38.9 63.0 5.0 57 8.8 I655 IT655. 6.0 30.7 780 3 3 3 3 8.0 55 8.5 I685 IT685. 6.0 2.0 5 8. I625 IT625. 6.0 8.0 60 9.3 I985 IT985 7.7 67.0 27.0 30.7 780 3 3 3 3 55 8.5 I9275 IT9275 9.9 68.0 36.0 5 8. I9365 IT9365 52. 69.0 Medium ensity - Incoloy Sheath 6.0 30.6 6065 T6065 38.9 63.0 9.0 30.7 780 3 3 3 3 27.2 6095 T6095 3.3 65.0 2.0 27.2 625 NWHO-5-62 T625 3.3 65.0 9.0 30.6 9095 T9095 9.9 68.0 3.5 30.7 780 3 3 3 3 27.2 935 T935 52. 69.0 8.0 27.2 985 T985 5.3 70.0 6.0 606532 T606532 3.3 65.0 30.7 780 3 3 3 3 2. 9.0 909532 T909532 52. 69.0 aloritech irculation Heaters
6 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 6 8.0 30.7 5.7.0. 7..9 (220) (780) (5) (280) (290) (80) (065) 60.6 3.3 5.7.0. 7. 5.5 (50) (00) (5) (280) (290) (80) (385) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg 6" - 50 lb langed Steel With (5 mm) Inlet nd Outlet High ensity - opper Sheath 36.0 30.7 780 3 55 8.5 2366 T2366 200.6 9.0 8.0 30.7 780 5 8. 286 NWH-6-28 T286 202.8 92.0 3 3 3 60.0 3.3 00 5 8. 2606 NHW-6-260 T2606 209. 95.0 72.0 3.3 00 53 8.2 2726 NWH-6-272 T2726 2.6 96 5.0 30.7 780 3 55 8.5 556 T556 205.0 93.0 60.0 30.7 780 3 5 8. 5606 T5606 2.6 96.0 75.0 3.3 00 3 3 3 5 8. 5756 T5756 20.3 09.0 90.0 3.3 00 53 8.2 5906 T5906 26.9 2.0 90.0 3.3 00 5 8. 8906 T8906 26.9 2.0 High ensity - Incoloy Sheath 36.0 30.7 780 3 55 8.5 I2366 IT2366 200.6 9.0 8.0 30.7 780 5 8. I286 IT286 202.8 92.0 3 3 3 60.0 3.3 00 5 8. I2606 IT2606 209. 95.0 72.0 3.3 00 53 8.2 I2726 IT2726 2.6 96.0 5.0 30.7 780 3 55 8.5 I55f6 IT55f6 205.0 93.0 60.0 30.7 780 3 5 8. I5606 IT5606 2.6 96.0 3 3 75.0 3.3 00 3 5 8. I575f6 IT575f6 20.3 09.0 90.0 3.3 00 53 8.2 I5906 IT5906 26.9 2.0 90.0 3 5 8. I8906 IT8906 26.9 2.0 20.0 3.3 00 3 70 0.9 I5206 IT5206 25.3.0.0 70 0.9 I86 IT86 260.2 8.0 Medium ensity - Incoloy Sheath 8.0 30.7 780 27.2 286 NWHO-6-28 T286 202.8 92.0 2.0 30.7 780 27.2 226 NWHO-6-22 T226 207.2 9.0 3 3 3 3 30.0 3.3 00 27.2 2306 NWHO-6-230 T2306 233.7 06.0 36.0 3.3 00 26. 2366 NWHO-6-236 T2366 238. 08.0 22.5 30.7 780 3 27.2 5226 T5226 209. 95.0 30.0 30.7 780 3 27.2 5306 T5306 23.9 97.0 3 3 3 37.5 3.3 00 3 27.2 5376 T5376 20.3 09.0 5.0 3.3 00 26. 556 T556 26.9 2.0 2.0 30.7 780 2. 226 T226 202.8 90.0 8.0 3.3 00 3 3 3 3 6 2.5 28639 NWHO-6L-28 T28639 233.7 06.0 2 3.3 00 8 2.7 2267 T2267 2.7 5 30.7 780 2. 556 T556 209. 95 22.5 3.3 00 3 3 3 3 6 2.5 522639 T522639 22.5 0 30 3.3 00 8 2.7 53067 T53067 253.5 5 irculation Heaters I Thermal Technologies Inc.
8 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 8 62.2 3.3 6.5 3.6 3.0 8.5 56. (580) (00) (65) (35) (330) (25) (25) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg 8" - 50 lb langed Steel With 2 / (6 mm) Inlet nd Outlet High ensity - opper Sheath 5.0 55 8.5 858 T858 233.7 06.0 72.0 5 8. 8728 T8728 20.3 09.0 3.3 00 3 3 3 90.0 5 8. 8908 T8908 33.6 2.0 08.0 53 8.2 8088 T8088 37.5.0 8.0 3 3 55 8.5 2788 T2788 326.3 8.0 08.0 3 5 8. 27088 T27088 335. 52.0 3.3 00 3 35.0 5 8. 27358 T27358 36. 57.0 62.0 53 8.2 27628 T27628 352.7 60.0 High ensity - Incoloy Sheath 5.0 55 8.5 I858 IT858 233.7 06.0 72.0 5 8. I8728 IT8728 20.3 09.0 3.3 00 3 3 3 90.0 5 8. I8908 IT8908 33.6 2.0 08.0 53 8.2 I8088 IT8088 37.5.0 8.0 3 3 55 8.5 I2788 IT2788 326.3 8.0 08.0 3 5 8. I27088 IT27088 335. 52.0 3.3 00 3 35.0 5 8. I27358 IT27358 36. 57.0 62.0 53 8.2 I27628 IT27628 352.7 60.0 20.0 70 0.9 I5208 IT5208 33.6 2.0.0 70 0.9 I88 IT88 39.7 5.0 3.3 00 3 68.0 70 0.9 I2688 IT2688 326.3 8.0 92.0 70 0.9 I2928 IT2928 332.9 5.0 26.0 70 0.9 I27268 IT27268 339.5 5.0 3.3 00 3 20.0 70 0.9 I30208 IT30208 36. 57.0 Medium ensity - Incoloy Sheath 36.0 3 27.2 8368 T8368 30.2 38.0 5.0 3.3 00 3 3 3 26. 858 T858 39.7 5.0 63.0 26. 2638 T2638 328.5 9.0 72.0 26. 2728 T2728 335. 52.0 8.0 3.3 00 3 3 26. 2788 T2788 3.7 55.0 90.0 26. 30908 T30908 38.3 58.0 27.0 6 2.5 8278 T8278 33.6 2.0 3.5 6 2.5 238 T238 37.5.0 3.3 00 3 3 3 3 36.0 6 2.5 2368 T2368 32.9 6.0 36.0 7 2.7 83687 T83687 32.9 6.0 0.5 6 2.5 2708 T2708 328.5 9.0 5.0 3.3 00 3 3 3 6 2.5 3058 T3058 335. 52.0 5 7 2.7 2758 T2758 33.9 56.0 aloritech irculation Heaters
0 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 0 65.0 3.3 7. 6.0.8 9.9 57. (650) (00) (80) (05) (375) (250) (50) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg 0" - 50 lb langed Steel With 3" (76 mm) Inlet nd Outlet High ensity - opper Sheath 80.0 3.3 00 63 9.8 36800 T36800 85.0 220.0 26.0 3.3 00 3 60 9.3 36260 T36260 98.2 226.0 252.0 3.3 00 60 9.3 22520 T22520 520.3 236.0 High ensity - Incoloy Sheath 80.0 3.3 00 63 9.8 I36800 IT36800 85.0 220.0 26.0 3.3 00 3 60 9.3 I36260 IT36260 98.2 226.0 252.0 3.3 00 60 9.3 I22520 IT22520 520.3 236.0 288.0 3.3 00 80 2.3 I362880 IT362880 98.2 226.0 336.0 3.3 00 3 80 2.3 I23360 IT23360 520.3 236.0 38.0 3.3 00 80 2.3 I8380 IT8380 52.3 26.0 Medium ensity - Incoloy Sheath 08.0 3.3 00 3 36080 T36080 98.2 226.0 26.0 3.3 00 3 30.6 2260 T2260 520.3 236.0.0 3.3 00 80 T80 537.9 2.0 72.0 3.3 00 36720 T36720 98.2 226.0 8.0 3.3 00 3 3 3 20 3. 280 T280 520.3 236.0 96.0 3.3 00 8960 T8960 537.9 2.0 irculation Heaters I Thermal Technologies Inc.
2 irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 2 65. 3.3 7. 9.0 6..5 57. (655) (00) (80) (80) (0) (290) (50) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg - 50 lb langed Steel With 3" (76 mm) Inlet nd Outlet High ensity - opper Sheath 20.0 3.3 00 63 9.8 8202 T8202 690. 33.0 288.0 3.3 00 60 9.3 82882 T82882 709.9 322.0 3 32.0 3.3 00 60 9.3 5322 T5322 727.5 330.0 360.0 3.3 00 60 9.3 603602 T603602 78.7 326.0 High ensity - Incoloy Sheath 20.0 3.3 00 63 9.8 I8202 IT8202 690. 33.0 288.0 3.3 00 3 60 9.3 I82882 IT82882 709.9 322.0 32.0 3.3 00 60 9.3 I5322 IT5322 727.5 330.0 360.0 3.3 00 60 9.3 I603602 IT603602 78.7 326.0 32.0 3.3 00 3 80 2.3 I5322 IT5322 727.5 330.0 80.0 3.3 00 80 2.3 I60802 IT60802 73.0 337.0 Medium ensity - Incoloy Sheath.0 3.3 00 82 T82 709.9 322.0 62.0 3.3 00 3 30.6 5622 T5622 727.5 330.0 80.0 3.3 00 60802 T60802 73.0 337.0 96.0 3.3 00 3 3 8962 T8962 709.9 322.0 08.0 3.3 00 3 3 20 3. 5082 T5082 727.5 330.0 20.0 3.3 00 60202 T60202 73.0 337.0 aloritech irculation Heaters
irculation Heaters Type Type I Type steam or gas heating systems. onsult factory for 66.2 3.3 7.8 2.0 7.5 2.6 58.6 (680) (00) (200) (535) (5) (320) (90) LU " " Watt ensity Without Thermostat Inlet/Outlet 208V, 20V 80V, 600V 50 to 250 (0 to 20 ) atalog atalog in mm Ø 3Ø Ø 3Ø W/in² W/cm² Part Part lbs kg " - 50 lb langed Steel With 3" (76 mm) Inlet nd Outlet High ensity - opper Sheath 300.0 3.3 00 63 9.8 60300 T60300 877. 398.0 360.0 3.3 00 60 9.3 60360 T60360 903.9 0.0 3 32.0 3.3 00 60 9.3 7232 T7232 93.8 2.0 50.0 3.3 00 60 9.3 850 T850 967.8 39.0 High ensity - Incoloy Sheath 300.0 3.3 00 63 9.8 I60300 IT60300 877. 398.0 360.0 3.3 00 3 60 9.3 I60360 IT60360 903.9 0.0 32.0 3.3 00 60 9.3 I7232 IT7232 93.8 2.0 50.0 3.3 00 60 9.3 I850 IT850 967.8 39.0 576.0 3.3 00 3 80 2.3 I72576 IT72576 93.8 2.0 672.0 3.3 00 80 2.3 I8672 IT8672 967.8 39.0 Medium ensity - Incoloy Sheath 80.0 3.3 00 6080 T6080 903.9 0.0 26.0 3.3 00 3 30.6 7226 T7226 93.8 2.0 252.0 3.3 00 8252 T8252 967.8 39.0 20.0 3.3 00 6020 T6020 903.9 0.0.0 3.3 00 3 3 3 20 3. 72 T72 93.8 2.0 68.0 3.3 00 868 T868 967.8 39.0 irculation Heaters I Thermal Technologies Inc.
Special eatures lange Heaters See Section of the aloritech catalog for special flange heater features for use in circulation heater vessels. Multistage Units irculation heaters can be supplied as multistage assemblies with either vertical or horizontal vessel orientation. See igures and 2. igure Special Materials Stainless steel or special alloy construction available for corrosive liquids of high temperature gas heating when outlet temperatures are in excess of 887 (75 ). langed Inlet and Outlet igure 2 Higher Ratings Units are available for operation at higher pressures or kilowatt ratings. ross low affles ross flow baffles improve heat transfer when heating viscous fluids and high temperature gases. ree Standing rame irculation heaters may be mounted on factory supplied frame as shown. actory Mounted ontrol Panel ustom designed, fully prewired control panels are available. See pages 27 to 33 for details. Inlet and Outlet 80 part To facilitate piping inlet and outlet piping may be positioned 80 apart or as required. Specify desired location of mounting lugs in relation to inlet and outlet. (orward sketch to the factory to avoid mistakes) Valves Pressure relief valves, bleed and drain valves are available. low Switch ifferential Pressure Switch Thermocouple built-in type J or K thermocouple mounted in the outlet pipe. uilt-in ontrols Mechanical or electronic high limit controls and temperature controls are available. Larger s sizes to 36 (9 mm) diameter or larger are available with flanged inlets and outlets up to 6 (06 mm) diameter. aloritech irculation Heaters