Circulation Heaters | McMaster-Carr

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25 Products

Flow-Through Heating Elements for Water


With Temperature-Control Screw	With Temperature-Control Dial

Also known as circulation heating elements, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. An adjustable thermostat automatically turns the heating element on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the screw or dial.

Incoloy Nickel Heating Element—Incoloy Nickel heating elements are more corrosion resistant than copper heating elements.

				Heating Element			Temp. Control
	Wattage, W	Watt Density, W/in²	Current, amp	Lg.	Wd.	No. of	Method	Range, ° F	Pipe Size	Thread Type	Gender	Wire Connection		Each
Copper Heating Element with Bronze Body







				120V AC, Single Phase

				1,500	34	12.5	11 1/4"	4"	1	Screw	60 to 180	1	NPT	Female	Screw Terminal	3595K31	000000000


				2,000	47	16.7	11 3/4"	4"	1	Screw	60 to 180	1	NPT	Female	Screw Terminal	3595K32	00000000




						240V AC, Single Phase

						3,000	51	12.5	16"	4"	1	Screw	60 to 180	1	NPT	Female	Screw Terminal	3595K33	00000000


						Incoloy Nickel Heating Element with Aluminum Body







										480V AC, Three Phase

										6,000	50	7.3	28 13/16"	5 5/8"	3	Dial	60 to 250	1	NPT	Male	Wire Leads	35705K112	00000000


										12,000	50	14.5	39 9/16"	5 5/8"	3	Dial	60 to 250	1	NPT	Male	Wire Leads	35705K122	00000000
										18,000	50	21.7	51 5/16"	5 5/8"	3	Dial	60 to 250	1	NPT	Male	Wire Leads	35705K132	00000000
										24,000	50	29	37 5/16"	8"	6	Dial	60 to 250	2	NPT	Male	Wire Leads	35705K152	00000000
										40,000	50	48	55 3/4"	8"	6	Dial	60 to 250	2	NPT	Male	Wire Leads	35705K162	00000000

Flow-Through Heating Elements for Chemical Solutions


	5-15

Also known as circulation heating elements, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. All are designed to heat chemical solutions at much higher watt densities than other immersion heating elements without damaging the heating element. An adjustable thermostat automatically turns the heating element on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the dial. Heating elements automatically shut off at 202° F to prevent fire and heating element burnout. The heating element is titanium for excellent resistance to harsh chemicals.

			Heating Element												Adjustable Thermostat (90° F to 190° F)
	Wattage, W	Watt Density, W/in²	Lg.	Wd.	No. of	Pipe Size	Thread Type	Gender	Electrical Connection Type	Wire Connection	NEMA Type	Cord Lg., ft.	Enclosure Rating	For Use With	Current, amp	Temp. Control Method		Each
Titanium Heating Element with 304 Stainless Steel Body







				120V AC, Single Phase

				1,500	42	15"	5.7"	1	1 1/2	NPT	Female	Plug In	—	5-15	6	NEMA 1	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Deionized Water Salt Water Water	12.5	Dial	4745T41	0000000




						240V AC, Single Phase

						3,000	84	15"	5.7"	1	1 1/2	NPT	Female	Hardwire	Wire Leads	—	—	NEMA 1	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Deionized Water Salt Water Water	12.5	Dial	4745T43	000000


						4,000	112	15"	5.7"	1	1 1/2	NPT	Female	Hardwire	Wire Leads	—	—	NEMA 1	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Deionized Water Salt Water Water	16.7	Dial	4745T44	000000
						6,000	167	15"	5.7"	1	1 1/2	NPT	Female	Hardwire	Wire Leads	—	—	NEMA 1	Ammonium Hydroxide (0-3% Concentration) Ammonium Hydroxide (3-6% Concentration) Deionized Water Salt Water Water	25	Dial	4745T46	000000

Flow-Through Heating Elements for Air

Tackle high-temperature drying, shrink-wrapping, and plastic welding jobs with your everyday compressed air supply. These heating elements connect to your air source on one end and to your process on the other. Control the output temperature by adjusting the incoming airflow or power sent to the heating element. The outlet can point upwards, straight, or as much as 10° downwards. Be cautious when positioning it—pointing it further downwards may damage the heating element.

To calculate the wattage needed for your application, multiply your incoming airflow in CFM by the number of degrees you need to increase air temperature, then divide by three.

			Heating Element												Without Temperature Control
	Wattage, W	Watt Density, W/in	Lg.	Wd.	No. of	Max. Air Input Temp., ° F	Max. Air Output Temperature, ° F	Max. Input Airflow, ft³/min	Pipe Size	Thread Type	Gender	Electrical Connection Type	Wire Connection	For Use With	Current, amp		Each
Ceramic Heating Element with Copper Body







				120V AC, Single Phase

				400	89	5"	1/2"	1	250	1,000	10	1/8	NPT	Female	Hardwire	Wire Leads	Air	3.3	6586N11	0000000


				650	87	8"	1/2"	1	250	1,000	10	1/8	NPT	Female	Hardwire	Wire Leads	Air	5.4	6586N12	000000
				750	136	6"	3/4"	1	250	1,000	20	1/4	NPT	Female	Hardwire	Wire Leads	Air	6.2	6586N13	000000
				1,250	132	10"	3/4"	1	250	1,000	20	1/4	NPT	Female	Hardwire	Wire Leads	Air	10.4	6586N14	000000




						240V AC, Single Phase

						1,000	182	6"	1 1/4"	1	250	1,000	50	1/2	NPT	Female	Hardwire	Wire Leads	Air	4.1	6586N15	000000


						2,500	333	8"	1 1/4"	1	250	1,000	50	1/2	NPT	Female	Hardwire	Wire Leads	Air	10.4	6586N16	000000
						4,000	348	12"	1 1/4"	1	250	1,000	50	1/2	NPT	Female	Hardwire	Wire Leads	Air	16.6	6586N17	000000

Accessories for Heating Elements

Thermocouple Probes for 240V AC Heating Elements

Image of Product. Front orientation. Thermocouples. Flow-Through Heating Elements for Air.

Thermocouple probes and thermocouple fittings allow you to use a temperature controller to operate 240V AC heating elements. The probe threads into the fitting to measure your air outlet temperature.

	Probe		Probe Connection			Cable
	Lg.	Dia.	Pipe Size	Thread Type	Gender	Lg., ft.	Material		Each
Type J Thermocouple



		1"	3/16"	1/4	NPT	Male	6	Fiberglass	6586N19	0000000

Thermocouple Fittings for 240V AC Heating Elements

Image of Product. Front orientation. Thermocouple and RTD Fittings. Flow-Through Heating Elements for Air.

Thermocouple probes and thermocouple fittings allow you to use a temperature controller to operate 240V AC heating elements. The probe threads into the fitting to measure your air outlet temperature.

Air Inlet		Air Outlet			Thermocouple Probe Connection
Pipe Size	Gender	Pipe Size	Thread Type	Gender	Pipe Size	Thread Type	Gender		Each
1/2	Male	1/2	NPT	Female	1/4	NPT	Female	6586N18	0000000

Flow-Through Heating Elements for Coolant

Also known as circulation heating elements, these install directly into pipelines to quickly and efficiently heat liquid through direct contact. To heat coolant without creating hot spots and damaging the heating element, they have a lower watt density than heating elements for water or chemicals. An adjustable thermostat automatically turns the heating element on when the temperature drops below the set temperature and off when it rises above the set temperature. Adjust the set temperature with the dial.

			Heating Element									Adjustable Thermostat (150° F to 560° F)
	Wattage, W	Watt Density, W/in²	Lg.	Wd.	No. of	Pipe Size	Thread Type	Gender	Electrical Connection Type	Wire Connection	For Use With	Current, amp	Temp. Control Method		Each
Steel Heating Element with Steel Body







				120V AC, Single Phase

				500	17	8 3/8"	4"	1	1	NPT	Female	Hardwire	Screw Terminal	Ethylene Glycol Water	4.2	Dial	3595K61	000000000


				750	17	13"	4"	1	1	NPT	Female	Hardwire	Screw Terminal	Ethylene Glycol Water	6.3	Dial	3595K62	00000000




						240V AC, Single Phase

						1,000	18	15 1/4"	4"	1	1	NPT	Female	Hardwire	Screw Terminal	Ethylene Glycol Water	4.2	Dial	3595K63	00000000

Hot and Cold Tubes for Supplied-Air Respirators for Plant Air Lines

For Heating/Cooling

Adjust the temperature of the air flowing into your respirator. These tubes rapidly spin the air from your supply line to separate it into hot and cold streams. Turn a knob to control how much air from each stream flows into your respirator.

	Lg.	Air Temp. Increase, ° F	Air Temp. Reduction, ° F	Material	Belt Material	Fitting Connection	Quick-Disconnect Style	Coupling Size	Includes	Features		Each
For Heating/Cooling



	1"	9"	0 to 25	0 to 30	Aluminum	Polypropylene Fabric	Quick Disconnect	Industrial	1/4	Cable Tie, Heat Shield	Temperature Control Valve	9770T111	0000000