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gruvlok Fittings
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48
GRUVLOK FITTINGS FOR GROOVED-END PIPE
MATERIAL SPECIFICATIONS
CAST FITTINGS:
Ductile iron conforming to ASTM A 536
Malleable iron conforming to ASTM A 47
FABRICATED FITTINGS:
1-6” Carbon steel, Schedule 40, conforming
to ASTM A 53, Grade B
8-12” Carbon steel, Schedule 30,
conforming to ASTM A 53, Grade B
14-24” Carbon steel, 0.375 wall, conforming
to ASTM A 53, Grade B
COATINGS:
Rust inhibiting paint Color: ORANGE (standard)
Hot Dipped Zinc Galvanized conforming to
ASTM A 153 (optional)
Other Colors Available (IE: RAL3000 and RAL9000)
The Fitting Size Chart is used to determine the
O.D. of the pipe that the fttings is to be used with.
Gruvlok Fittings are identifed by either the Nominal
size in inches or the Pipe O.D. in/mm.
Nominal
Size O.D.
In./DN(mm)
In./mm
1 1.315
25
33.4
1
1
/
4
1.660
32
42.4
1
1
/
2
1.900
40
48.3
2 2.375
50
60.3
2
1
/
2
2.875
65
73.0
3 O.D.
2.996
76.1 76.1
3 3.500
80
88.9
3
1
/
2
4.000
65
101.6
4
1
/
4
O.D.
4.250
108.0 108.0
4 4.500
100 114.3
5
1
/
4
O.D.
5.236
133.0 133.0
5
1
/
2
O.D.
5.500
139.7 139.7
Nominal
Size O.D.
In./DN(mm)
In./mm
5 5.563
140 141.3
6
1
/
4
O.D.
6.259
159.0 159.0
6
1
/
2
O.D.
6.500
165.1 165.1
6 6.625
150 168.3
8 8.625
200 219.1
10 10.750
250 273.0
12 12.750
300 323.9
14 14.000
350 355.6
16 16.000
400 406.4
18 18.000
450 457.2
20 20.000
500 508.0
24 24.000
600 609.6
FITTING SIZE
For the reducing tee and branches, use the value that is corresponding to the branch
size. For example: for 6" x 6" x 3" tee, the branch value of 3" is 12.8 ft (3.9).
FLOW DATA – FRICTIONAL RESISTANCE
(EXPRESSED AS EQUIVALENT STRAIGHT PIPE)
Nom.
Size
O.D.
Pipe Wall
Thickness
Elbow
Tee
90
°
45
°
Branch
Run
In./DN(mm)
In./mm In./mm Ft./m Ft./m Ft./m Ft./m
1
1.315 0.133 1.7 0.9 4.4 1.7
25
33.4
3.4
0.5
0.3
1.3
0.5
1
1
/
4
1.660 0.140 2.3 1.2 5.8 2.3
32
42.2
3.6
0.7
0.4
1.8
0.7
1
1
/
2
1.900 0.145 2.7 1.3 6.7 2.7
40
48.3
3.7
0.8
0.4
2.0
0.8
2
2.375 0.154 3.4 1.7 8.6 3.4
50
60.3
3.9
1.0
0.5
2.6
1.0
2
1
/
2
2.875 0.203 4.1 2.1 10.3 4.1
65
73.0
5.2
1.2
0.6
3.1
1.2
3 O.D.
2.996
0.197
4.3
2.2
10.8
4.3
76.1
76.1
5.0
1.3 0.7 3.3 1.3
3
3.500 0.216 5.1 2.6 12.8 5.1
80
88.9
5.5
1.6
0.8
3.9
1.6
4
1
/
4
O.D.
4.250
0.220
6.4
3.2
16.1
6.4
108.0 108.0
5.6
2.0 1.0 4.9 2.0
4
4.500 0.237 6.7 3.4 16.8 6.7
100
114.3
6.0
2.0
1.0
5.1
2.0
5
1
/
4
O.D.
5.236
0.248
8.0
4.0
20.1
8.0
133.0 133.0
6.3
2.4 1.2 6.1 2.4
5
1
/
2
O.D.
5.500
0.248
8.3
4.2
20.9
8.3
139.7 139.7
6.3
2.5 1.3 6.4 2.5
5
5.563 0.258 8.4 4.2 21.0 8.4
125
141.3
6.6
2.6
1.3
6.4
2.6
6
1
/
4
O.D.
6.259
0.280
9.7
4.9
24.3
9.7
159.0 159.0
7.1
3.0 1.5 7.4 3.0
6
1
/
2
O.D.
6.500
0.280
10.0
5.0
24.9 10.0
165.1 165.1
7.1
3.0 1.5 7.6 3.0
6
6.625 0.280 10.1 5.1 25.3 10.1
150
168.3
7.1
3.1
1.6
7.7
3.1
8
8.625 0.322 13.3 6.7 33.3 13.3
200
219.1
8.2
4.1
2.0
10.1
4.1
10
10.750 0.365 16.7 8.4 41.8 16.7
250
273.1
9.3
5.1
2.6
12.7
5.1
12
12.750 0.375 20.0 10.0 50.0 20.0
300
323.9
9.5
6.1
3.0
15.2
6.1
14
14.000 0.375 22.2 17.7 64.2 22.9
350
355.6
9.5
6.8
5.4
19.6
7.0
16
16.000 0.375 25.5 20.4 73.9 26.4
400
406.4
9.5
7.8
6.2
22.5
8.0
18
18.000 0.375 28.9 23.1 87.2 31.1
450
457.2
9.5
8.8
7.0
26.6
9.5
20
20.000 0.375 32.2 25.7 97.3 34.8
500
508.0
9.5
9.8
7.8
29.7 10.6
24
24.000 0.375 38.9 31.1 113.0 40.4
600
609.6
9.5
11.9
9.5
34.4 12.3
Gruvlok fttings are available through 24" nominal pipe size in a variety of styles. Use the Fitting Size
Table to convert nominal pipe size to corresponding pipe O.D.
These fttings are designed to provide minimum pressure drop and uniform strength.
Depending on styles and size, Gruvlok fttings are provided in various materials
including malleable iron, ductile iron, forged steel or fabricated steel.
Pressure ratings of Gruvlok standard fttings conform to those of
Fig. 7001 Gruvlok coupling.
Not for use in copper systems.
GL-2.10