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The difference and specifications between mechanical tees and grooved tees

Nov. 09, 2022

What is the difference between a mechanical tee and a grooved tee? This is a question that many laypeople often ask. The same is a tee fitting. The mechanical tee and the grooved tee are actually quite different. First, look at the following two pictures:

Grooved Tee

Grooved Tee

Grooved Mechanical Tee

Grooved Mechanical Tee

Judging from the pictures, the two grooved products are very different. The grooved mechanical tee has two more threads and nuts and rubber rings than the grooved tee. Below I will describe their specific uses separately.

1. Grooved Tee

● effect:

A tee has three openings, one inlet, and two outlets, or two inlets and one outlet. A tee is a pipe fitting applied to a pipeline system, with T-shaped and Y-shaped, with equal-diameter nozzles and different-diameter nozzles, used for the convergence of three identical or different pipelines. The main function of the tee is to change the direction of the fluid.

● Install:

Grooved tees should be installed in grooved piping systems. All three outlets of the grooved tee should be connected to the pipe by rigid or flexible couplings. See below:

Rigid couplings

Rigid couplings

Regarding the similarities and differences between rigid clamps and flexible clamps, you can click the link below for a more detailed introduction to the article:

https://www.malleableiron-pipefitting.com/industry-knowledge/rigid-coupling-vs-flexible-coupling.html

2. Grooved mechanical tee

⑴ Reasons to use a grooved mechanical tee：

To lead out a branch pipe with a different diameter, a mechanical tee is used in the construction process. A groove connection and a threaded connection are two types of connections. This type of connection is usually made for several reasons:

● Branch pipe must be installed somewhere on the main pipe.

Reducing tee can be used to lead a branch pipe out of an existing pipe of a fixed length (usually 6 meters), but the main pipe needs to be cut off.

● For the purpose of saving money.

The cost of a tee is greater than that of a mechanical tee. Under normal circumstances, mechanical tees are used when the diameter of the main pipe is 33, and U-shaped mechanical tees are usually used between 33 and 60. There are two ways to connect U-shaped mechanical tees: grooves or screws; they usually use 60 to 219 calibers, and they have an outer diameter of 21 to 33 inches (roughly 1/2" to 1"). The demand is not much different.

⑵ Threaded mechanical tee

The threaded mechanical tee is a very special kind of grooved pipe fittings. It is similar to the grooved mechanical tee and is also widely used in grooved piping systems, but the branch pipe connection port of the threaded mechanical tee is connected by threads. The picture below shows the threaded mechanical tee.

Threaded mechanical tee

3. Standard Specifications for Grooved Tees, Grooved Mechanical Tees, and Grooved Threaded Tees

Grooved Mechanical Tees

	Pipe O.D（D × d)	Working Pressure		Dimensions				Bolt/Nut Size
mm/in	mm/in	PSI/Mpa		K (mm/in)	W (mm/in)	L (mm/in)	H（mm/in）	No. - Size (mm)
100 × 25	114.3 × 33.7	300PSI 2.07MPa	363PSI 2.5MPa	102	71	180	80	M12×70
4 × 1	4.500 × 1.315			4.02	2.80	7.09	3.15	M12×70
100 × 32	114.3 × 42.4			102	71	180	92	M12×70
4 × 1¼	4.500 × 1.660			4.02	2.80	7.09	3.62	M12×70
100 × 40	114.3 × 48.3			102	71	180	92	M12×70
4 × 1½	4.500 × 1.900			4.02	2.80	7.09	3.62	M12×70
100 × 50	114.3 × 60.3			102	71	180	107	M12×70
4 × 2	4.500 × 2.375			4.02	2.80	7.09	4.21	M12×70
100 × 65	114.3 × 76.1			102	71	180	114	M12×70
4 × 2½	4.500 × 3.000			4.02	2.80	7.09	4.49	M12×70
100 × 80	114.3 × 88.9			102	71	180	134	M12×70
4 × 3	4.500 × 3.500			4.02	2.80	7.09	5.28	M12×70
125 × 65	139.7 × 76.1			115	84	217	114	M16×85
5 × 2½	5.500 × 3.000			4.53	3.31	8.54	4.49	M16×85
125 × 80	139.7 × 88.9			115	84	217	134	M16×85
5 × 3	5.500 × 3.500			4.53	3.31	8.54	5.28	M16×85
150 × 65	159.0 × 76.1			125	93	239	114	M16×95
6 × 2½	6.250 × 3.000			4.92	3.66	9.41	4.49	M16×95
150 × 80	159.0 × 88.9			125	93	239	134	M16×95
6 × 3	6.250 × 3.500			4.92	3.66	9.41	5.28	M16×95
150 × 100	159.0 × 108.0			130	93	239	162	M16×95
6 × 4	6.250 × 4.250			5.12	3.66	9.41	6.38	M16×95
150 × 50	165.1 × 60.3			128	97	244	107	M16×95
6 × 2	6.500 × 2.375			5.04	3.82	9.61	4.21	M16×95
150 × 65	165.1 × 76.1			128	97	244	114	M16×95
6 × 2½	6.500 × 3.000			5.04	3.82	9.61	4.49	M16×95
150 × 80	165.1 × 88.9			128	97	244	134	M16×95
6 × 3	6.500 × 3.500			5.04	3.82	9.61	5.28	M16×95
150 × 100	165.1 × 114.3			133	97	244	162	M16×95
6 × 4	6.500 × 4.500			5.24	3.82	9.61	6.38	M16×95
200 × 50	219.1 × 60.3			156	126	307	107	M16×100
8 × 2	8.625 × 2.375			6.14	4.96	12.09	4.21	M16×100
200 × 65	219.1 × 76.1			156	126	307	114	M16×100
8 × 2½	8.625 × 3.000			6.14	4.96	12.09	4.49	M16×100
200 × 80	219.1 × 88.9			156	126	307	134	M16×100
8 × 3	8.625 × 3.500			6.14	4.96	12.09	5.28	M16×100
200 × 100	219.1 × 114.3			158	126	307	162	M16×100
8 × 4	8.625 × 4.500			6.22	4.96	12.09	6.38	M16×100
250 × 100	273.0× 114.3			187	152	384	162	M20×110
10 × 4	10.750 × 4.500			7.36	5.98	15.12	6.38	M20×110

Grooved Threaded Tees

0	Pipe O.D（D × Rc)	Working Pressure		Dimensions				Bolt/Nut Size
mm/in	mm/in	PSI/Mpa		K (mm/in)	W (mm/in)	L (mm/in)	H （mm/in）	No. - Size (mm)
65 × 25	76.1 × 33.7	300PSI 2.07MPa	363PSI 2.5MPa	68	51	136	80	M12×65
2½ × 1	3.000 × 1.315			2.68	2.01	5.35	3.15	M12×65
65 × 32	76.1 × 42.4			70	51	136	92	M12×65
2½ × 1¼	3.000 × 1.660			2.76	2.01	5.35	3.62	M12×65
65 × 40	76.1 × 48.3			70	51	136	92	M12×65
2½ × 1½	3.000 × 1.900			2.76	2.01	5.35	3.62	M12×65
80 × 25	88.9 × 33.7			75	58	149	80	M12×65
3 × 1	3.500 × 1.315			2.95	2.28	5.87	3.15	M12×65
80 × 32	88.9 × 42.4			78	58	149	92	M12×65
3 × 1¼	3.500 × 1.660			3.07	2.28	5.87	3.62	M12×65
80 × 40	88.9 × 48.3			78	58	149	92	M12×65
3 × 1½	3.500 × 1.900			3.07	2.28	5.87	3.62	M12×65
80 × 50	88.9 × 60.3			82	58	149	107	M12×65
3 × 2	3.500 × 2.375			3.23	2.28	5.87	4.21	M12×65
100 × 25	108.0 × 33.7			87.5	68	174	80	M12×70
4 × 1	4.250 × 1.315			3.44	2.68	6.85	3.15	M12×70
100 × 32	108.0 × 42.4			90	68	174	92	M12×70
4 × 1¼	4.250 × 1.660			3.54	2.68	6.85	3.62	M12×70
100 × 40	108.0 × 48.3			90	68	174	92	M12×70
4 × 1½	4.250 × 1.900			3.54	2.68	6.85	3.62	M12×70
100 × 50	108.0 × 60.3			94	68	174	107	M12×70
4 × 2	4.250 × 2.375			3.70	2.68	6.85	4.21	M12×70
100 × 65	108.0 × 76.1			100	68	174	114	M12×70
4 × 2½	4.250 × 3.000			3.94	2.68	6.85	4.49	M12×70
100 × 25	114.3 × 33.7			90	71	180	80	M12×70
4 × 1	4.500 × 1.315			3.54	2.80	7.09	3.15	M12×70
100 × 32	114.3 × 42.4			92	71	180	92	M12×70
4 × 1¼	4.500 × 1.660			3.62	2.80	7.09	3.62	M12×70
100 × 40	114.3 × 48.3			92.5	71	180	92	M12×70
4 × 1½	4.500 × 1.900			3.64	2.80	7.09	3.62	M12×70
100 × 50	114.3 × 60.3			96	71	180	107	M12×70
4 × 2	4.500 × 2.375			3.78	2.80	7.09	4.21	M12×70
100 × 65	114.3 × 76.1			103	71	180	114	M12×70
4 × 2½	4.500 × 3.000			4.06	2.80	7.09	4.49	M12×70
100 × 80	114.3 × 88.9			104	71	180	134	M12×70
4 × 3	4.500 × 3.500			4.09	2.80	7.09	5.28	M12×70
125 × 65	133.0 × 76.1			112	80	210	114	M16×85
5 × 2½	5.250 × 3.000			4.41	3.15	8.27	4.49	M16×85
125 × 80	133.0 × 88.9			113	80	210	134	M16×85
5 × 3	5.250 × 3.500			4.45	3.15	8.27	5.28	M16×85
125 × 25	139.7 × 33.7			103	84	217	80	M16×85
5 × 1	5.500 × 1.315			4.06	3.31	8.54	3.15	M16×85
125 × 32	139.7 × 42.4			105	84	217	92	M16×85
5 × 1¼	5.500 × 1.660			4.13	3.31	8.54	3.62	M16×85
125 × 40	139.7 × 48.3			105	84	217	92	M16×85
5 × 1½	5.500 × 1.900			4.13	3.31	8.54	3.62	M16×85
125 × 50	139.7 × 60.3			109	84	217	107	M16×85
5 × 2	5.500 × 2.375			4.29	3.31	8.54	4.21	M16×85
125 × 65	139.7 × 76.1			116	84	217	114	M16×85
5 × 2½	5.500 × 3.000			4.57	3.31	8.54	4.49	M16×85
125 × 80	139.7 × 88.9			117	84	217	134	M16×85
5 × 3	5.500 × 3.500			4.61	3.31	8.54	5.28	M16×85
150 × 25	159.0 × 33.7			114	93	239	80	M16×95
6 × 1	6.250 × 1.315			4.49	3.66	9.41	3.15	M16×95
150 × 32	159.0 × 42.4			116	93	239	92	M16×95
6 × 1¼	6.250 × 1.660			4.57	3.66	9.41	3.62	M16×95
150 × 40	159.0 × 48.3			116	93	239	92	M16×95
6 × 1½	6.250 × 1.900			4.57	3.66	9.41	3.62	M16×95
150 × 50	159.0 × 60.3			119	93	239	107	M16×95
6 × 2	6.250 × 2.375			4.69	3.66	9.41	4.21	M16×95
150 × 65	159.0 × 76.1			124	93	239	114	M16×95
6 × 2½	6.250 × 3.000			4.88	3.66	9.41	4.49	M16×95
150 × 80	159.0 × 88.9			125	93	239	134	M16×95
6 × 3	6.250 × 3.500			4.92	3.66	9.41	5.28	M16×95
150 × 25	165.1 × 33.7	117	97	244	80	M16×95
6 × 1	6.500 × 1.315	4.61	3.82	9.61	3.15	M16×95
150 × 32	165.1 × 42.4	118	97	244	92	M16×95
6 × 1¼	6.500 × 1.660	4.65	3.82	9.61	3.62	M16×95
150 × 40	165.1 × 48.3	120	97	244	92	M16×95
6 × 1½	6.500 × 1.900	4.72	3.82	9.61	3.62	M16×95
150 × 50	165.1 × 60.3	122	97	244	107	M16×95
6 × 2	6.500 × 2.375	4.80	3.82	9.61	4.21	M16×95
150 × 65	165.1 × 76.1	127	97	244	114	M16×95
6 × 2½	6.500 × 3.000	5.00	3.82	9.61	4.49	M16×95
150 × 80	165.1 × 88.9	128	97	244	134	M16×95
6 × 3	6.500 × 3.500	5.04	3.82	9.61	5.28	M16×95
150 × 100	165.1 × 114.3	132	97	244	162	M16×95
6 × 4	6.500 × 4.500	5.20	3.82	9.61	6.38	M16×95
200 × 25	219.1 × 33.7	143	126	307	80	M16×100
8 × 1	8.625 × 1.315	5.63	4.96	12.09	3.15	M16×100
200 × 32	219.1 × 42.4	145	126	307	92	M16×100
8 × 1¼	8.625 × 1.660	5.71	4.96	12.09	3.62	M16×100
200 × 40	219.1 × 48.3	145	126	307	92	M16×100
8 × 1½	8.625 × 1.900	5.71	4.96	12.09	3.62	M16×100
200 × 50	219.1 × 60.3	149	126	307	107	M16×100
8 × 2	8.625 × 2.375	5.87	4.96	12.09	4.21	M16×100
200 × 65	219.1 × 76.1	155	126	307	114	M16×100
8 × 2½	8.625 × 3.000	6.10	4.96	12.09	4.49	M16×100
200 × 80	219.1 × 88.9	158	126	307	134	M16×100
8 × 3	8.625 × 3.500	6.22	4.96	12.09	5.28	M16×100
250 × 25	273.0 × 33.7	175	152	384	80	M20×110
10 × 1	10.750 × 1.315	6.89	5.98	15.12	3.15	M20×110
250 × 50	273.0 × 60.3	179	152	384	107	M20×110
10 × 2	10.750 × 2.375	7.05	5.98	15.12	4.21	M20×110

Grooved Tees

Nominal Size	Pipe O.D	Working Pressure		Dimensions
mm/in	mm/in	PSI/Mpa		L (mm/in)
50	60.3	300PSI 2.07MPa	363PSI 2.5MPa	68.5
2	2.374			2.697
65	76.1			74
2½	2.996			2.913
80	88.9			84
3	3.500			3.307
100	108.0			100
4	4.252			3.937
100	114.3			100
4	4.500			3.937
125	133.0			122
5	5.236			4.803
125	139.7			122
5	5.500			4.803
150	159.0			138
6	6.260			5.433
150	165.1			138
6	6.500			5.433
200	219.1			171
8	8.626			6.732
250	273.0			212
10	10.748			8.346
300	323.9			242
12	12.752			9.528
250	273.0	225PSI 1.6MPa	363PSI 2.5MPa 225PSI 1.6MPa	212
10	10.748			8.346
300	323.9			242
12	12.752			9.528

If you are interested in grooved pipe fittings, please click the link below to enter the official website of Jianzhi Group to see more about grooved pipe fittings.

https://www.malleableiron-pipefitting.com/

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