Pipe Heat Sinks | McMaster-Carr

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Less than 10,000 BTU/hr

10,000 BTU/hr to 19,999 BTU/hr

20,000 BTU/hr to 29,999 BTU/hr

30,000 BTU/hr to 99,999 BTU/hr

100,000 BTU/hr or greater

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Less than 10,000 BTU/hr

10,000 BTU/hr to 19,999 BTU/hr

20,000 BTU/hr to 29,999 BTU/hr

30,000 BTU/hr to 99,999 BTU/hr

100,000 BTU/hr or greater

Material

Heat Sink Material

Electrical Phase

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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Not Compliant

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EAR99

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Fan

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80 Products

High-Capacity Heat Sinks for Oil


Style A	Style B

For greater cooling capacity and higher flow rates than other heat sinks for oil, these have a large fan. Also known as oil coolers, they're commonly used to cool hydraulic fluid and lubricating oil in cylinders and compressors. Cooling capacity is based on an initial temperature difference of 50° F.

Totally Enclosed Nonventilated (TENV)—208V AC to 230V AC/460V AC, Three Phase

Image of Product. Front orientation. Heat Sinks. High-Capacity Heat Sinks for Oil, Totally Enclosed Nonventilated (TENV) Motor Enclosure.

			Overall
	Cooling Cap., BTU/hr	Thread Size	Ht.	Wd.	Dp.	Heat Sink Material	Max. Pressure, psi	Max. Flow Rate, gpm	Max. Temp., ° F	Dash Size		Each
Female UN/UNF (SAE Straight) Thread—For Oil



		12,000	1 1/16"-12	13 3/4"	13 3/4"	12 9/16"	Aluminum	377	30	250	12	3579K111	000000000


		20,000	1 1/16"-12	14 1/2"	14 1/8"	16 15/16"	Aluminum	377	35	250	12	3579K21	00000000

Totally Enclosed Fan-Cooled (TEFC)—208V AC to 230V AC/460V AC, Three Phase


Style A	Style B

				Overall				Bolt Hole
	Style	Cooling Cap., BTU/hr	Thread Size	Ht.	Wd.	Dp.	SAE Pipe Flange Size	Dia.	No. of	Ctr.-to-Ctr.	Heat Sink Material	Max. Pressure, psi	Max. Flow Rate, gpm	Max. Temp., ° F	Dash Size		Each
Female UN/UNF (SAE Straight) Thread—For Oil



		A	7,500	1 5/16"-12	11 13/16"	14 13/16"	20"	—	—	—	—	Aluminum, Copper	300	20	400	16	3579K101	000000000


		A	13,800	1 5/16"-12	13 1/8"	19"	19 1/4"	—	—	—	—	Aluminum, Copper	300	25	400	16	3579K102	00000000
		B	27,000	1 5/16"-12	15 15/16"	16 1/8"	14 3/16"	—	—	—	—	Aluminum	377	50	250	16	3579K22	00000000
		B	32,000	1 5/16"-12	15 15/16"	16 9/16"	16"	—	—	—	—	Aluminum	377	65	250	16	3579K112	00000000
		B	44,000	1 5/8"-12	19 9/16"	22"	15 3/8"	—	—	—	—	Aluminum	377	60	250	20	3579K113	00000000
		B	76,000	1 5/8"-12	24"	25 9/16"	16 3/4"	—	—	—	—	Aluminum	377	65	250	20	3579K23	00000000
		B	90,000	1 5/8"-12	24"	26 3/8"	18"	—	—	—	—	Aluminum	377	75	250	20	3579K24	00000000
		B	126,000	1 5/8"-12	25 7/8"	30 5/16"	19 1/2"	—	—	—	—	Aluminum	377	80	250	20	3579K114	00000000


		SAE Flange—For Oil



				B	205,000	—	30 3/16"	37"	23 3/16"	2	0.51"	4	1.688" to 3.062"	Aluminum	377	115	250	—	3579K116	00000000


				B	238,000	—	33 1/4"	39"	23 3/8"	2	0.51"	4	1.688" to 3.062"	Aluminum	377	120	250	—	3579K117	00000000
				B	356,000	—	38 3/8"	43 5/8"	29 1/2"	2	0.51"	4	1.688" to 3.062"	Aluminum	250	150	250	—	3579K119	000000000

Heat Sinks for Oil

Dozens of fins and coolant tubes quickly dissipate excess heat. Also known as oil coolers, these heat sinks cool hydraulic fluid and lubricating oil in cylinders and compressors. Cooling and flow capacities are based on 50 SSU oil, 1,000 feet per minute of air, a 50° F initial temperature difference, and a 10 psi pressure drop.

Bypass—Heat sinks with a bypass prevent damage to the cooling fins by diverting pressurized oil. They’re often used in machines that are started up while cold. Once the oil heats up and the pressure drops, flow through the cooling tubes resumes.

					Overall
	Cooling Cap., BTU/hr	Pipe Size	Thread Type	Gender	Ht.	Wd.	Dp.	Heat Sink Material	Max. Pressure, psi	Max. Flow Rate, gpm	Max. Temp., ° F	Fitting Connection	No. of Mounting Kits Req.		Each
Copper Tube—For Oil



		3,300	1/2	NPT	Female	4 1/2"	15"	1 1/2"	Aluminum	300	7	350	Threaded	2	3525K11	0000000


		6,100	1/2	NPT	Female	6 1/2"	18"	1 1/2"	Aluminum	300	9	350	Threaded	4	3525K21	000000
		8,100	1/2	NPT	Female	6 1/2"	24"	1 1/2"	Aluminum	300	7	350	Threaded	4	3525K12	000000
		9,600	1/2	NPT	Female	8 1/2"	21"	1 1/2"	Aluminum	300	11	350	Threaded	4	3525K13	000000
		11,800	3/4	NPT	Female	12 3/4"	18"	1 1/2"	Aluminum	300	19	350	Threaded	4	3525K14	000000
		24,000	3/4	NPT	Female	18 3/4"	24"	1 1/2"	Aluminum	300	22	350	Threaded	6	3525K25	000000
		31,000	1	NPT	Female	25"	24"	1 1/2"	Aluminum	300	28	350	Threaded	8	3525K26	000000
		49,000	1	NPT	Female	31"	30"	1 1/2"	Aluminum	300	30	350	Threaded	8	3525K27	000000
		57,000	1 1/4	NPT	Female	37 7/16"	30"	1 1/2"	Aluminum	300	36	350	Threaded	8	3525K28	00000000


		Copper Tube with Bypass—For Oil



				3,400	1/2	NPT	Female	4 1/2"	15"	1 1/2"	Aluminum	300	7	350	Threaded	2	3525K101	000000


				6,300	1/2	NPT	Female	6 1/2"	18 1/4"	1 1/2"	Aluminum	300	9	350	Threaded	4	3525K102	000000
				10,000	1/2	NPT	Female	8 1/2"	21"	1 1/2"	Aluminum	300	11	350	Threaded	4	3525K103	000000
				12,000	3/4	NPT	Female	12 3/4"	18"	1 1/2"	Aluminum	300	9	350	Threaded	4	3525K104	000000

Heat Sink Mounts

Includes		Each
Two Carriage Bolts, Two Flat Washers, Two Lock Washers, Two Nuts, Two Rubber Blocks	3525K41	000000

Heat Sinks with Internal Pump for Water


	5-15

To provide a more consistent flow of cooled water than other heat sinks for water, these have a built-in pump and reservoir. The internal fan-cooled heat exchanger dissipates heat. Btu/hr. cooling capacity is based on water with an initial temperature difference of 77° F.

					Overall
	Cooling Cap., BTU/hr	Pipe Size	Thread Type	Gender	Ht.	Wd.	Dp.	Heat Sink Material	Max. Pressure, psi	Max. Flow Rate, gpm	Max. Temp., ° F	Voltage (Electrical Phase)	Current, amp	NEMA Type	Cord Lg., ft.	Fitting Connection		Each
For Water and Noncorrosive Liquids



		12,000	1/2	NPT	Female	24"	15"	15"	Copper	60	1.8	130	120V AC (Single)	5.8	5-15	8	Threaded	35205K16	000000000

Heat Pipes

Protect computers, sensitive electronic components, lighting, injection molders, and HVAC systems from damage by routing heat away from them and toward a heat sink, where the heat can be dissipated. For best results, heat pipes should be soldered to heat sinks and other components. For small jobs and prototypes, however, they can be joined with thermal epoxy. Cooling capacity is the amount of heat that a heat pipe can carry.

Round

Pipe Benders

Grooved Wick Heat Pipe—Heat pipes with a grooved wick transfer heat better than those with a sintered wick, meaning they can carry more heat. They are not good, however, for applications that will require many bends in the pipe. Position them horizontally, since they do not work well against gravity.

Sintered Wick Heat Pipe—Heat pipes with a sintered wick handle high fluctuations in temperature better than those with a grooved wick. They’re also best for applications that will require many bends in the pipe. Position them horizontally or vertically—they work well in both orientations.

Pipe Benders—Use optional pipe benders to create smooth, accurate bends in round heat pipe. These specially designed tools allow a smooth bending motion to reduce marks on your pipe, which ordinary pliers can often leave behind. All have graduation markings to prevent over bending, which can reduce the ability of your heat pipe to transfer heat. Every 45° bend in a heat pipe will reduce the cooling capacity of the heat pipe by about 2.5%. Place these tools on benches, vises, and workstations without scratching them—all have rubber mounting feet.

	Pipes							Pipe Benders
	Lg., mm	Cooling Capacity (Installed Length)	Temp. Range, ° F	Material	Working Fluid		Each		Each
Grooved Wick Heat Pipe







				4 mm OD

				200	100 BTU/hr (125 mm), 130 BTU/hr (100 mm), 90 BTU/hr (150 mm)	90 to 245	Copper	Water	3874N11	000000	3872N11	0000000


				300	60 BTU/hr (200 mm), 90 BTU/hr (150 mm), 50 BTU/hr (250 mm)	90 to 245	Copper	Water	3874N12	00000	3872N11	000000




						6 mm OD

						200	170 BTU/hr (125 mm), 210 BTU/hr (100 mm), 140 BTU/hr (150 mm)	90 to 245	Copper	Water	3874N13	00000	3872N12	000000


						300	130 BTU/hr (200 mm), 180 BTU/hr (150 mm), 100 BTU/hr (250 mm)	90 to 245	Copper	Water	3874N14	00000	3872N12	000000


						Sintered Wick Heat Pipe







										4 mm OD

										100	210 BTU/hr (40 mm), 170 BTU/hr (50 mm), 140 BTU/hr (60 mm)	90 to 245	Copper	Water	3874N15	0000	3872N11	000000


										150	140 BTU/hr (60 mm), 110 BTU/hr (75 mm), 90 BTU/hr (90 mm)	90 to 245	Copper	Water	3874N16	0000	3872N11	000000
										200	100 BTU/hr (80 mm), 80 BTU/hr (100 mm), 70 BTU/hr (120 mm)	90 to 245	Copper	Water	3874N17	0000	3872N11	000000
										250	80 BTU/hr (100 mm), 60 BTU/hr (125 mm), 50 BTU/hr (150 mm)	90 to 245	Copper	Water	3874N18	0000	3872N11	000000




												6 mm OD

												70	650 BTU/hr (28 mm), 520 BTU/hr (35 mm), 430 BTU/hr (42 mm)	90 to 245	Copper	Water	3874N19	0000	3872N12	000000


												100	450 BTU/hr (40 mm), 360 BTU/hr (50 mm), 300 BTU/hr (60 mm)	90 to 245	Copper	Water	3874N21	0000	3872N12	000000
												150	300 BTU/hr (60 mm), 240 BTU/hr (75 mm), 200 BTU/hr (90 mm)	90 to 245	Copper	Water	3874N22	0000	3872N12	000000
												250	180 BTU/hr (100 mm), 140 BTU/hr (125 mm), 120 BTU/hr (150 mm)	90 to 245	Copper	Water	3874N23	0000	3872N12	000000
												350	120 BTU/hr (140 mm), 100 BTU/hr (175 mm), 80 BTU/hr (210 mm)	90 to 245	Copper	Water	3874N24	00000	3872N12	000000




														8 mm OD

														70	940 BTU/hr (28 mm), 760 BTU/hr (35 mm), 630 BTU/hr (42 mm)	90 to 245	Copper	Water	3874N25	0000	3872N13	000000


														100	660 BTU/hr (40 mm), 530 BTU/hr (50 mm), 440 BTU/hr (60 mm)	90 to 245	Copper	Water	3874N26	0000	3872N13	000000
150														440 BTU/hr (60 mm), 350 BTU/hr (75 mm), 290 BTU/hr (90 mm)	90 to 245	Copper	Water	3874N27	0000	3872N13	000000
200	330 BTU/hr (80 mm), 260 BTU/hr (100 mm), 220 BTU/hr (120 mm)													90 to 245	Copper	Water	3874N28	00000	3872N13	000000
350	190 BTU/hr (140 mm), 150 BTU/hr (175 mm), 120 BTU/hr (210 mm)													90 to 245	Copper	Water	3874N31	00000	3872N13	000000

Flat

Flat heat pipes, often called vapor chambers, can be embedded into your heat sink to spread heat uniformly across the base, helping the heat to dissipate faster.

	Temp. Range, ° F	Material	Working Fluid		Each
Sintered Wick Heat Pipe







	5.1 mm Wide

	70	2.5	160 BTU/hr (42 mm), 130 BTU/hr (53 mm), 110 BTU/hr (63 mm)	90 to 245	Copper	Water	3874N32	000000


	100	2.5	110 BTU/hr (60 mm), 90 BTU/hr (75 mm), 70 BTU/hr (90 mm)	90 to 245	Copper	Water	3874N33	00000
	150	2.5	70 BTU/hr (90 mm), 60 BTU/hr (113 mm), 50 BTU/hr (135 mm)	90 to 245	Copper	Water	3874N34	00000
	200	2.5	50 BTU/hr (120 mm), 40 BTU/hr (150 mm), 30 BTU/hr (180 mm)	90 to 245	Copper	Water	3874N35	00000




			6.44 mm Wide

			70	3	220 BTU/hr (42 mm), 170 BTU/hr (53 mm), 150 BTU/hr (63 mm)	90 to 245	Copper	Water	3874N38	00000


			100	3	150 BTU/hr (60 mm), 120 BTU/hr (75 mm), 100 BTU/hr (90 mm)	90 to 245	Copper	Water	3874N39	00000
			150	3	100 BTU/hr (90 mm), 80 BTU/hr (113 mm), 60 BTU/hr (135 mm)	90 to 245	Copper	Water	3874N41	00000
			200	3	70 BTU/hr (120 mm), 60 BTU/hr (150 mm), 50 BTU/hr (180 mm)	90 to 245	Copper	Water	3874N42	00000




					9.45 mm Wide

					75	5	380 BTU/hr (45 mm), 310 BTU/hr (56 mm), 250 BTU/hr (68 mm)	90 to 245	Copper	Water	3874N54	00000


					150	5	190 BTU/hr (90 mm), 150 BTU/hr (113 mm), 120 BTU/hr (135 mm)	90 to 245	Copper	Water	3874N55	00000
					200	5	140 BTU/hr (120 mm), 110 BTU/hr (150 mm), 90 BTU/hr (180 mm)	90 to 245	Copper	Water	3874N56	00000
					350	5	80 BTU/hr (210 mm), 60 BTU/hr (263 mm), 50 BTU/hr (315 mm)	90 to 245	Copper	Water	3874N59	00000

High-Efficiency Heat Exchangers


2 Mounting Holes	4 Mounting Holes	2 Mounting Studs	With Four Mounting Studs

Stacked, corrugated plates maximize contact with liquid or steam flowing through these brazed plate heat exchangers for faster heat transfer than shell and tube heat exchangers. Plates are brazed in a vacuum furnace to ensure 100% sealed construction.

ASME BPVC.VIII.1 Certified Heat Exchangers—ASME BPVC VIII.1 copper-brazed heat exchangers have a Btu/hr. cooling capacity based on cooling 100 SSU oil to 125° F using 85° F water. They meet the ASME Boiler and Pressure Vessel Code (BPVC) for construction of pressure vessels.

Nickel-Brazed 316 Stainless Steel Plate—Nickel-brazed heat exchangers have a Btu/hr. cooling capacity based on cooling oil from 140° to 120° F using 70° F water.

Copper-Brazed 316 Stainless Steel Plate—Copper-brazed heat exchangers have a Btu/hr. cooling capacity based on cooling water from 120° to 100° F using 70° F water.

									Overall			Mounting Hole		Mounting Stud
	Heating/Cooling Cap., BTU/hr	Surface Area, ft²	Temp. Range, ° F	Pipe Size	Thread Type	Gender	Flow Cap., gpm	Max. Pressure, psi	Ht.	Wd.	Dp.	No. of	Dia.	No. of	Thread Size	Lg.		Each
Heat Exchangers







				Nickel-Brazed 316 Stainless Steel Plate

				16,000	3.1	-320 to 390	1	NPT	Male	4	360	13 3/16"	4 7/8"	2 3/16"	—	—	4	M10	13/16"	3253K31	0000000


				37,000	6.8	-320 to 390	1	NPT	Male	9	360	13 3/16"	4 7/8"	3 1/16"	—	—	4	M10	13/16"	3253K32	00000000
				56,000	10.6	-320 to 390	1	NPT	Male	13	360	13 3/16"	4 7/8"	4"	—	—	4	M10	13/16"	3253K33	00000000
				74,000	14.3	-320 to 390	1	NPT	Male	18	360	13 3/16"	4 7/8"	4 7/8"	—	—	4	M10	13/16"	3253K34	00000000
				120,000	40.7	-320 to 390	2	NPT	Male	30	390	20 15/16"	10 11/16"	4 1/16"	—	—	4	M12	1 3/16"	3253K35	00000000


				UL Listed Heat Exchangers







								Copper-Brazed 316 Stainless Steel Plate

								69,000	2.2	-320 to 350	3/4	NPT	Male	7	450	9 1/8"	3 1/2"	2 5/8"	—	—	2	M8	20 mm	35115K61	000000


								112,000	3	-320 to 350	1	NPT	Male	8	450	13 3/16"	5"	1 1/4"	—	—	4	M10	20 mm	35115K62	000000
								270,000	6.8	-320 to 350	1	NPT	Male	19	450	13 3/16"	5"	2"	—	—	4	M8	20 mm	35115K63	000000
								574,000	14.3	-320 to 350	1	NPT	Male	40	450	13 3/16"	5"	4"	—	—	4	M10	20 mm	35115K64	000000
								780,000	21.9	-320 to 350	1 1/4	NPT	Male	53	450	13 3/16"	5"	5 3/4"	—	—	4	M8	20 mm	35115K65	00000000
								998,000	36.8	-320 to 350	2	NPT	Male	105	300	20 5/16"	9 13/16"	3.06"	—	—	4	1/2"-13	1 1/2"	35115K66	00000000
								1,710,000	68.3	-320 to 390	2	NPT	Male	120	450	20 15/16"	10 11/16"	4 15/16"	—	—	4	M12	30 mm	35115K77	00000000


								ASME BPVC.VIII.1 Certified Heat Exchangers







												Copper-Brazed 316 Stainless Steel Plate

												5,000	4.8	-310 to 450	3/4	NPT	Male	27	435	8 7/16"	3 3/16"	4 7/16"	2	9/32"	—	—	—	8546T11	000000


												12,000	7.9	-310 to 450	1	NPT	Male	29	435	12 3/16"	4 3/8"	4 1/4"	2	13/32"	—	—	—	8546T12	000000
												17,000	10.7	-310 to 450	1	NPT	Male	37	435	12 3/16"	4 3/8"	5 1/4"	2	13/32"	—	—	—	8546T13	000000
												50,000	15.6	-310 to 450	1	NPT	Male	22	435	20 11/16"	4 3/8"	4 1/4"	2	13/32"	—	—	—	8546T14	000000
												75,000	26.8	-310 to 450	1	NPT	Male	34	435	20 11/16"	4 3/8"	6 3/16"	2	13/32"	—	—	—	8546T15	00000000
												125,000	29.7	-310 to 450	2	NPT	Male	57	435	24 5/16"	7 1/2"	5 3/4"	4	1/2"	—	—	—	8546T16	00000000
												380,000	82.8	-310 to 450	2	NPT	Male	141	435	24 5/16"	7 1/2"	11 1/2"	4	1/2"	—	—	—	8546T17	00000000