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Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings
Grooved rigid couplings

Grooved rigid couplings are mainly used to connect steel pipes for fire protection system, potable water supply system, municipal construction, mine, chemical factory and other occasions when steel pipes used.

Material of body: ductile cast iron (ASTM A536,Grade: 65-45-12)

Material of gasket: EPDM, NBR, silicon rubber

Standard: UL213

Working pressure: 2.07MPa / 300PSI

Surface treatment: electrostatics powder painting, galvanization

Colors: RAL3000, blue, white or as customized

Bolts and nuts: stainless steel, grade 8.8

All sizes are UL listed and FM approved

Product parameters

Nominal size  Pipe OD Working Pressure   Product  Dimension (inch / mm)    Bolt/Nut
   inch / mm inch / mm      PSI / MPaΦ  LH
1
25
1.327
33.7
300
2.07
2.205
56
3.78
96
1.772
45
10*45
1 1/4
32
1.669
42.4
300
2.07
2.598
66
4.173
106
1.772
45
10*45
1 1/2
40
1.9
48.3
300
2.07
2.835
72
4.488
114
1.772
45
10*45
2
50
2.375
60.3
300
2.07
3.189
81
4.961
126
1.85
47
10*55
2 1/2
65
2.875
73
300
2.07
3.74
95
5.472
139
1.85
47
10*55
3 (OD)
65
3
76.1
300
2.07
3.898
99
5.63
143
1.85
47
10*55
3
80
3.5
88.9
300
2.07
4.409
112
6.181
157
1.89
48
10*55
4
100
4.5
114.3
300
2.07
5.433
138
7.598
193
1.969
50
12*65
5 1/2 (OD)
125
5.5
139.7
300
2.07
6.535
166
8.701
221
1.969
50
12*70
5
125
5.563
141.3
300
2.07
6.654
169
8.74
222
1.969
50
12870
6 1/2 (OD)
150
6.5
165.1
300
2.07
7.598
193
9.843
250
2.008
51
12*70
6
150
6.625
168.3
300
2.07
7.717
196
10.079
256
2.008
51
12*70
8
200
8.625
219.1
300
2.07
10
254
12.677
322
2.48
63
16*85
10
250
10.75
273
300
2.07
12.323
313
15.433
392
2.52
64
20*100
12
300
12.75
323.9
300
2.07
14.409
366
17.52
445
2.598
66
20*110


Product parameters

Nominal size  Pipe OD Working Pressure   Product  Dimension (inch / mm)    Bolt/Nut
   inch / mm inch / mm      PSI / MPaΦ  LH
1
25
1.327
33.7
300
2.07
2.205
56
3.78
96
1.772
45
10*45
1 1/4
32
1.669
42.4
300
2.07
2.598
66
4.173
106
1.772
45
10*45
1 1/2
40
1.9
48.3
300
2.07
2.835
72
4.488
114
1.772
45
10*45
2
50
2.375
60.3
300
2.07
3.189
81
4.961
126
1.85
47
10*55
2 1/2
65
2.875
73
300
2.07
3.74
95
5.472
139
1.85
47
10*55
3 (OD)
65
3
76.1
300
2.07
3.898
99
5.63
143
1.85
47
10*55
3
80
3.5
88.9
300
2.07
4.409
112
6.181
157
1.89
48
10*55
4
100
4.5
114.3
300
2.07
5.433
138
7.598
193
1.969
50
12*65
5 1/2 (OD)
125
5.5
139.7
300
2.07
6.535
166
8.701
221
1.969
50
12*70
5
125
5.563
141.3
300
2.07
6.654
169
8.74
222
1.969
50
12870
6 1/2 (OD)
150
6.5
165.1
300
2.07
7.598
193
9.843
250
2.008
51
12*70
6
150
6.625
168.3
300
2.07
7.717
196
10.079
256
2.008
51
12*70
8
200
8.625
219.1
300
2.07
10
254
12.677
322
2.48
63
16*85
10
250
10.75
273
300
2.07
12.323
313
15.433
392
2.52
64
20*100
12
300
12.75
323.9
300
2.07
14.409
366
17.52
445
2.598
66
20*110


Inquiry

If you have any questions about the product, please fill in the form below and we will contact you as soon as possible