A picture of flexible coupling sample

Flexible Couplings for Simple & Convenient Membrane Housing Connection

Flexible couplings are a device used to connect grooved pipes, valves and membrane housings. Mostly constructed of stainless steel 304, 316 and 316L, they are often used to achieve connection between membrane housings, between membrane housing and pipe and between pipes. Grooved pipe is a key part for connecting membrane housing side port with pipes or with other membrane housings. What flexible couplings and grooved pipe constitute is called flexible couplings, featuring good performance, tight sealing and easy installation. They are mainly used for connecting mechanical pipes in water treatment systems, municipal water supply system, fire fighting system, etc.

  • Specification
  • Video
Specification
  • A piece of S30 stainless steel flexible coupling on white background.

    S30 Stainless Steel

  • A piece of S80 stainless steel flexible coupling on white background.

    S80 Stainless Steel

  • A piece of S160 stainless steel flexible coupling on white background.

    S160 Stainless Steel

  • A piece of G30 stainless steel flexible coupling on white background.

    G30 Stainless Steel

  • A piece of C Ductile Iron flexible coupling on white background.

    C Ductile Iron

S30 Stainless Steel

The Model S30 is a flexible coupling designed for low & Medium pressure applications including Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis systems. The S30 is supplied standard in CF8 (304) and CF8M (316) with 304 or 316 bolts and nuts.

A piece of S30 stainless steel flexible coupling on white background.

S30 Stainless Steel

A drawing of S30 stainless steel flexible coupling on white background.

S30 Stainless Steel

  • Size: 3/4" – 12" (DN20 – DN300)
  • Working pressure: 600 psi (42 bar)
  • Applicable pipelines: for Sch 40S cut grooved pipes only
  • Housing Material
    • Type 304 Stainless steel to ASTM A959-2004
    • Type 316 to ASTM A959-2004
    • Type 316L to ASTM A959-2004
    • Duplex 2205 (CD3MN) to ASTM A995/A995M-19 4A
    • Super Duplex 2507 (CE3MN) to ASTM A995/A995M-19 5A
  • Rubber Gaskets: The gasket seals is C-shaped, made of standard gasket EPDM (ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-34 °C to +150 °C). It is not suitable for medium like petroleum. In case of special conditions requiring resistance to high temperature, acid and alkali solutions as well as lubricants and hydraulic oils, FKM is recommended.
  • Bolts & Nuts:
    • Type 304 stainless steel track bolts and nuts to GB12-88
    • Type 316 stainless steel track bolts and nuts to GB12-88
Read MoreRead Less
Table 1: S30 Stainless Steel Flexible Coupling Specification
Nominal Size Pipe O.D. Working Pressure Pipe End Separation Coupling Dimensions Coupling Bolts
X Y Z Qty. Size
(mm/in.) (mm/in.) (psi/bar) (mm/in.) (mm/in.) (mm/in.) (mm/in.) pcs mm
20 mm 26.9 mm 600 psi 0–1.6 mm 47 mm 88 mm 43 mm 2 pcs M10 mm × 45 mm
3/4" 1.050" 42 bar 0–0.06" 1.850" 3.465" 1.693"
25 mm 32 mm 600 psi 0–1.6 mm 53 mm 90 mm 43 mm 2 pcs M10 mm × 45 mm
1" 1.260" 42 bar 0–0.06" 2.087" 3.543" 1.693"
25 mm 33.7 mm 600 psi 0–1.6 mm 53 mm 90 mm 43 mm 2 pcs M10 mm × 45 mm
1" 1.315" 42 bar 0–0.06" 2.087" 3.543" 1.693"
32 mm 38 mm 600 psi 0–1.6 mm 58 mm 94 mm 44 mm 2 pcs M10 mm × 45 mm
1-1/4" 1.496" 42 bar 0–0.06" 2.283" 3.700" 1.732"
32 mm 42.4 mm 600 psi 0–1.6 mm 62 mm 102 mm 44 mm 2 pcs M10 mm × 45 mm
1-1/4" 1.660" 42 bar 0–0.06" 2.441" 4.016" 1.732"
40 mm 48.3 mm 600 psi 0–1.6 mm 67 mm 107 mm 43 mm 2 pcs M10 mm × 45 mm
1-1/2" 1.900" 42 bar 0–0.06" 2.638" 4.212" 1.693"
50 mm 57 mm 600 psi 0–1.6 mm 78 mm 117 mm 43 mm 2 pcs M10 mm × 50 mm
2" 2.244" 42 bar 0–0.06" 3.071" 4.606" 1.693"
50 mm 60.3 mm 600 psi 0–1.6 mm 79 mm 118 mm 43 mm 2 pcs M10 mm × 45 mm
2" 2.375" 42 bar 0–0.06" 3.110" 4.645" 1.693"
65 mm 73 mm 600 psi 0–1.6 mm 94 mm 135 mm 44 mm 2 pcs M10 mm × 50 mm
2-1/2" 2.875" 42 bar 0–0.06" 3.700" 5.315" 1.732"
65mm 76.1 mm 600 psi 0–1.6 mm 95 mm 135 mm 44 mm 2 pcs M10 mm × 50 mm
2-1/2" 3.000" 42 bar 0–0.06" 3.740" 5.315" 1.732"
80 mm 88.9 mm 600 psi 0–1.6 mm 110 mm 151 mm 45 mm 2 pcs M10 mm × 50 mm
3" 3.500" 42 bar 0–0.06" 4.330" 5.945" 1.771"
90 mm 101.6 mm 600 psi 0–3.2 mm 129 mm 178 mm 47 mm 2 pcs M12 mm × 60 mm
3-1/2" 4.000" 42 bar 0–0.13" 5.078" 7.008" 1.850"
*100 mm 108 mm 600 psi 0–3.2 mm 137 mm 184 mm 47 mm 2 pcs M12 mm × 60 mm
*4" 4.250" 42 bar 0–0.13" 5.394" 7.244" 1.850"
*100 mm 114.3 mm 600 psi 0–3.2 mm 142 mm 190 mm 48 mm 2 pcs M12 mm × 60 mm
*4" 4.500" 42 bar 0–0.13" 5.591" 7.480" 1.890"
*125 mm 133 mm 600 psi 0–3.2 mm 162 mm 216 mm 48 mm 2 pcs M12 mm × 65 mm
*5" 5.250" 42 bar 0–0.13" 6.378" 8.504" 1.890"
*125 mm 139.7 mm 600 psi 0–3.2 mm 167 mm 216 mm 48 mm 2 pcs M12 mm × 65 mm
*5" 5.500" 42 bar 0–0.13" 6.575" 8.504" 1.890"
*150 mm 159 mm 600 psi 0–3.2 mm 190 mm 240 mm 50 mm 2 pcs M12 mm × 70 mm
*6" 6.259" 42 bar 0–0.13" 7.480" 9.448" 1.968"
150 mm 168.3 mm 600 psi 0–3.2 mm 195 mm 247 mm 48 mm 2 pcs M12 mm × 70 mm
6" 6.625" 42 bar 0–0.13" 7.677" 9.724" 1.889"
200 mm 219.1 mm 600 psi 0–3.2 mm 253 mm 325 mm 58 mm 2 pcs M16 mm × 90 mm
8" 8.625" 42 bar 0–0.13" 9.961" 12.795" 2.283"
*250 mm 273 mm 600 psi 0–3.2 mm 315 mm 396 mm 62 mm 2 pcs M20 mm × 100 mm
*10" 10.750" 42 bar 0–0.13" 12.401" 15.590" 2.441"
*300 mm 323.9 mm 600 psi 0–3.2 mm 372 mm 452 mm 65 mm 2 pcs M24 mm × 130 mm
*12" 12.750" 42 bar 0–0.13" 14.645" 17.795" 2.559"

Note: The the model with "*" are under development.

S80 Stainless Steel

The Model S80 is a flexible coupling clamp designed for high pressure applications including SWRO, DTRO and STRO systems. The S80 is available in strong and anti-corrosive alloys of 316L, The S80 features 316 bolts and heavy duty nuts help prevent galling during repetitive use.

A piece of S80 stainless steel flexible coupling on white background.

S80 Stainless Steel

A drawing of S80 stainless steel flexible coupling on white background.

S80 Stainless Steel

  • Size: 3/4" to 12" (DN20 to DN300)
  • Working Pressure: 1200 psi (83 bar)
  • Applicable pipelines: for Sch 40S cut grooved pipes only
  • Housing Material:
    • Type 304 Stainless steel to ASTM A959-2004
    • Type 316 to ASTM A959-2004
    • Type 316L to ASTM A959-2004
    • Duplex 2205 (CD3MN) to ASTM A995/A995M-19 4A
    • Super Duplex 2507 (CE3MN) to ASTM A995/A995M-19 5A
  • Rubber Gaskets: The gasket seals is C-shaped, made of standard gasket EPDM (ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-34 °C to +150 °C). It is not suitable for medium like petroleum. In case of special conditions requiring resistance to high temperature, acid and alkali solutions as well as lubricants and hydraulic oils, FKM is recommended.
  • Bolts & Nuts
    • Type 304 stainless steel track bolts and nuts to GB12-88
    • Type 316 stainless steel track bolts and nuts to GB12-88
Read MoreRead Less
Table 2: S80 Stainless Steel Flexible Coupling Specification
Nominal Size Pipe O.D. Working Pressure Pipe End Separation Coupling Dimensions Coupling Bolts
X Y Z Qty. Size
(mm/in.) (mm/in.) (psi/bar) (mm/in.) (mm/in.) (mm/in.) (mm/in.) pcs mm
20 mm 26.9 mm 1200 psi 0–1.6 mm 49 mm 89 mm 44 mm 2 pcs M10 mm × 45 mm
3/4" 1.050" 83 bar 0–0.06" 1.929" 3.504" 1.732"
25 mm 32 mm 1200 psi 0–1.6 mm 56 mm 96 mm 45 mm 2 pcs M10 mm × 45 mm
1" 1.260" 83 bar 0–0.06" 2.205" 3.779" 1.772"
25 mm 33.7 mm 1200 psi 0–1.6 mm 56 mm 96 mm 45 mm 2 pcs M10 mm × 45 mm
1" 1.315" 83 bar 0–0.06" 2.205" 3.779" 1.772"
*32 mm 38 mm 1200 psi 0–1.6 mm 62 mm 102 mm 45 mm 2 pcs M10 mm × 50 mm
*1-1/4" 1.496" 83 bar 0–0.06" 2.441" 4.016" 1.772"
32 mm 42.4 mm 1200 psi 0–1.6 mm 66 mm 103 mm 45 mm 2 pcs M10 mm × 50 mm
1-1/4" 1.660" 83 bar 0–0.06" 2.598" 4.055" 1.772"
40 mm 48.3 mm 1200 psi 0–1.6 mm 70 mm 108 mm 45 mm 2 pcs M10 mm × 50 mm
1-1/2" 1.900" 83 bar 0–0.06" 2.755" 4.251" 1.772"
50 mm 57 mm 1200 psi 0–1.6 mm 82 mm 128 mm 46 mm 2 pcs M12 mm × 60 mm
2" 2.244" 83 bar 0–0.06" 3.228" 5.039" 1.811"
50 mm 60.3 mm 1200 psi 0–1.6 mm 83 mm 128 mm 46 mm 2 pcs M12 mm × 60 mm
2" 2.375" 83 bar 0–0.06" 3.267" 5.039" 1.811"
65 mm 73 mm 1200 psi 0–1.6 mm 100 mm 142 mm 47 mm 2 pcs M12 mm × 70 mm
2-1/2" 2.875" 83 bar 0–0.06" 3.937" 5.590" 1.850"
65 mm 76.1 mm 1200 psi 0–1.6 mm 100 mm 142 mm 47 mm 2 pcs M12 mm × 70 mm
2-1/2" 3.000" 83 bar 0–0.06" 3.937" 5.590" 1.850"
80 mm 88.9 mm 1200 psi 0–1.6 mm 117 mm 160 mm 47 mm 2 pcs M12 mm × 70 mm
3" 3.500" 83 bar 0–0.06" 4.606" 6.299" 1.850"
100 mm 108 mm 1200 psi 0–3.2 mm 147 mm 210 mm 52 mm 2 pcs M16 mm × 90 mm
4" 4.250" 83 bar 0–0.13" 5.787" 8.267" 2.047"
100 mm 114.3 mm 1200 psi 0–3.2 mm 148 mm 210 mm 52 mm 2 pcs M16 mm × 90 mm
4" 4.500" 83 bar 0–0.13" 5.827" 8.267" 2.047"
*125 mm 133 mm 1200 psi 0–3.2 mm 180 mm 252 mm 52 mm 2 pcs M16 mm × 90 mm
*5" 5.250" 83 bar 0–0.13" 7.087" 9.921" 2.047"
*125 mm 139.7 mm 1200 psi 0–3.2 mm 180 mm 252 mm 52 mm 2 pcs M16 mm × 90 mm
*5" 5.500" 83 bar 0–0.13" 7.087" 9.921" 2.047"
*150 mm 159 mm 1200 psi 0–3.2 mm 210 mm 280 mm 52 mm 2 pcs M20 mm × 100 mm
*6" 6.259" 83 bar 0–0.13" 8.267" 11.023" 2.047"
*150 mm 168.3 mm 1200 psi 0–3.2 mm 210 mm 280 mm 52 mm 2 pcs M20 mm × 100 mm
*6" 6.625" 83 bar 0–0.13" 8.267" 11.023" 2.047"
*200 mm 219.1 mm 1200 psi 0–3.2 mm 276 mm 360 mm 62 mm 2 pcs M24 mm × 130 mm
*8" 8.625" 83 bar 0–0.13" 10.866" 14.173" 2.441"
*250 mm 273 mm 1200 psi 0–3.2 mm 342 mm 420 mm 67 mm 2 pcs M24 mm × 160 mm
*10" 10.750" 83 bar 0–0.13" 13.465" 16.535" 2.637"
*300 mm 323.9 mm 1200 psi 0–3.2 mm 394 mm 480 mm 67 mm 2 pcs M24 mm × 180 mm
*12" 12.750" 83 bar 0–0.13" 15.512" 18.897" 2.637"

Note:

  • The the model with "*" are under development.
  • Used at the outlet of high -pressure pumps and plug pumps, it is recommended to choose the corresponding model of the Model S160 series with higher pressure level.

S160 Stainless Steel

The Model S160 is a flexible coupling clamp designed for super high pressure applications including SWRO, DTRO and STRO systems. The S160 is available in strong and anti-corrosive alloys of 316L, The S160 features 316 bolts and heavy duty nuts help prevent galling during repetitive use.

A piece of S160 stainless steel flexible coupling on white background.

S160 Stainless Steel

A drawing of S160 stainless steel flexible coupling on white background.

S160 Stainless Steel

  • Size: 3/4" – 12" (DN20 – DN300)
  • Working pressure: 2322 psi (160 bar)
  • Applicable pipelines: for Sch 40S cut grooved pipes only
  • Housing Material:
    • Type 304 Stainless steel to ASTM A959-2004
    • Type 316 to ASTM A959-2004
    • Type 316L to ASTM A959-2004
    • Duplex 2205 (CD3MN) to ASTM A995/A995M-19 4A
    • Super Duplex 2507 (CE3MN) to ASTM A995/A995M-19 5A
  • Rubber gasket: The gasket seals is C-shaped, made of standard gasket EPDM (ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-34 °C to +150 °C). It is not suitable for medium like petroleum. In case of special conditions requiring resistance to high temperature, acid and alkali solutions as well as lubricants and hydraulic oils, FKM is recommended.
  • Bolts & Nuts Material:
    • Type 304 stainless steel track bolts and nuts to GB12-88
    • Type 316 stainless steel track bolts and nuts to GB12-88
Read MoreRead Less
Table 3: S160 Stainless Steel Flexible Coupling Specification
Nominal Size Pipe O.D. Working Pressure Pipe End Separation Coupling Dimensions Coupling Bolts
X Y Z Qty. Size
(mm/in) (mm/in) (psi/bar) (mm/in) mm/in mm/in mm/in pcs mm
20 mm 26.9 mm 2322 psi 0–1.6 mm 56 mm 96 mm 47 mm 2 pcs M10 mm × 50 mm
3/4" 1.050" 160 bar 0–0.06" 2.205" 3.779" 1.850"
25 mm 32 mm 2322 psi 0–1.6 mm 60 mm 95 mm 48 mm 2 pcs M10 mm × 50 mm
1" 1.260" 160 bar 0–0.06" 2.362" 3.741" 1.889"
25 mm 33.7 mm 2322 psi 0–1.6 mm 61 mm 99 mm 48 mm 2 pcs M10 mm × 50 mm
1" 1.315" 160 bar 0–0.06" 2.401" 3.897" 1.889"
32 mm 42.4 mm 2322 psi 0–1.6 mm 73 mm 112 mm 47 mm 2 pcs M12 mm × 60 mm
1-1/4" 1.660" 160 bar 0–0.06" 2.874" 4.409" 1.851"
40 mm 48.3 mm 2322 psi 0–1.6 mm 78 mm 119 mm 47 mm 2 pcs M12 mm × 60 mm
1-1/2" 1.900" 160 bar 0–0.06" 3.071" 4.685" 1.851"
50 mm 60.3 mm 2322 psi 0–1.6 mm 92 mm 130 mm 47 mm 2 pcs M12 mm × 60 mm
2" 2.375" 160 bar 0–0.06" 3.622" 5.118" 1.851"
65 mm 73 mm 2322 psi 0–1.6 mm 108 mm 146 mm 47 mm 2 pcs M12 mm × 70 mm
2-1/2" 2.875" 160 bar 0–0.06" 4.252" 5.748" 1.851"
65 mm 76.1 mm 2322 psi 0–1.6 mm 110 mm 148 mm 47 mm 2 pcs M12 mm × 70 mm
2-1/2" 3.000" 160 bar 0–0.06" 4.331" 5.826" 1.851"
80 mm 88.9 mm 2322 psi 0–1.6 mm 125 mm 167 mm 47 mm 2 pcs M12 mm × 70 mm
3" 3.500" 160 bar 0–0.06" 4.921" 6.574" 1.851"
100 mm 108 mm 2322 psi 0–3.2 mm 152 mm 204 mm 51 mm 2 pcs M16 mm × 90 mm
4" 4.251" 160 bar 0–0.13" 5.984" 8.031" 2.008"
100 mm 114.3 mm 2322 psi 0–3.2 mm 156 mm 209 mm 51 mm 2 pcs M16 mm × 90 mm
4" 4.500" 160 bar 0–0.13" 6.142" 8.228" 2.008"
125 mm 133 mm 2322 psi 0–3.2 mm 180 mm 233 mm 51 mm 2 pcs M16 mm × 90 mm
5" 5.250" 160 bar 0–0.13" 7.087" 9.173" 2.008"
125 mm 139.7 mm 2322 psi 0–3.2 mm 183 mm 238 mm 51 mm 2 pcs M16 mm × 90 mm
5" 5.500" 160 bar 0–0.13" 7.205" 9.37" 2.008"
150 mm 159 mm 2322 psi 0–3.2 mm 213 mm 277 mm 52 mm 2 pcs M20 mm × 100 mm
6" 6.259" 160 bar 0–0.13" 8.386" 10.906" 2.047"
150 mm 168.3 mm 2322 psi 0–3.2 mm 219 mm 279 mm 52 mm 2 pcs M20 mm × 100 mm
6" 6.625" 160 bar 0–0.13" 8.622" 10.984" 2.047"
200 mm 219.1 mm 2322 psi 0–3.2 mm 275 mm 345 mm 61 mm 2 pcs M24 mm × 130 mm
8" 8.625" 160 bar 0–0.13" 10.827" 13.583" 2.402"
250 mm 273 mm 2322 psi 0–3.2 mm 345 mm 435 mm 65 mm 2 pcs M27 mm × 180 mm
10" 10.750" 160 bar 0–0.13" 13.583" 17.126" 2.559"
300 mm 323.9 mm 2322 psi 0–3.2 mm 400 mm 495 mm 65 mm 2 pcs M27 mm × 180 mm
12" 12.750" 160 bar 0–0.13" 15.748" 19.488" 2.559"

Note:

  • Used at the outlet of high -pressure pumps and plug pumps, it is recommended to choose the corresponding model of the Model S160 series with higher pressure level.

G30 Stainless Steel

The Model G30 is a rigid coupling designed for low & Medium pressure applications including Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis systems. The G30 is supplied standard in CF8 (304) and CF8M (316) with 304 or 316 bolts and nuts.

A piece of g30 stainless steel flexible coupling on white background.

G30 Stainless Steel

A drawing of g30 stainless steel flexible coupling on white background.

G30 Stainless Steel

  • Size: 3/4" – 12" (DN20 – DN300)
  • Working Pressure: 600 psi (42 bar)
  • Applicable pipelines: for Sch 40S rolled grooved pipes only
  • Housing Material:
    • 304 stainless steel – ASTM A351 304 or A743 Gr. 304
    • 316 stainless steel – ASTM A351 316
    • 316L stainless steel – ASTM A351 316L
    • CE8MN – ASTM A890 2A*
    • Duplex 2205 (CD3MN) – ASTM A890 4A*
    • Super Duplex 2507 (CE3MN) – ASTM A890 5A*
  • Rubber Gaskets: The gasket seals is C-shaped, made of standard gasket EPDM (ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-34 °C to +150 °C). It is not suitable for medium like petroleum.
  • Bolts & Nuts Material:
    • 304 stainless steel track bolts and nuts – GB12 or ASTM F-593.
    • 316 stainless steel track bolts and nuts – GB12 or ASTM F-593
Read MoreRead Less
Table 4: G30 Stainless Steel Flexible Coupling Specification
Nominal size Pipe O.D. Working Pressure Pipe End Separation Coupling Clamp Dimensions Coupling Clamp Bolts
X Y Z Qty. Size
(mm/in.) (mm/in.) (psi/bar) (mm/in.) (mm/in.) (mm/in.) (mm/in.) pcs mm
*20 mm 26.9 mm 600 psi 0–1.6 mm 47 mm 88 mm 43 mm 2 pcs M10 mm × 45 mm
*3/4" 1.050" 42 bar 0–0.06" 1.850" 3.465" 1.693"
*25 mm 32 mm 600 psi 0–1.6 mm 53 mm 90 mm 43 mm 2 pcs M10 mm × 45 mm
*1" 1.260" 42 bar 0–0.06" 2.087" 3.543" 1,693"
*25 mm 33.7 mm 600 psi 0–1.6 mm 53 mm 90 mm 43 mm 2 pcs M10 mm × 45 mm
*1" 1.315" 42 bar 0–0.06" 2.087" 3.543" 1.693"
*32 mm 38 mm 600 psi 0–1.6 mm 58 mm 94 mm 44 mm 2 pcs M10 mm × 45 mm
*1-1/4" 1.496" 42 bar 0–0.06" 2.283" 3.700" 1.732"
*32 mm 42.4 mm 600 psi 0–1.6 mm 62 mm 102 mm 44 mm 2 pcs M10 mm × 45 mm
*1-1/4" 1.660" 42 bar 0–0.06" 2.441" 4.016" 1.732"
*40 mm 48.3 mm 600 psi 0–1.6 mm 67 mm 107 mm 43 mm 2 pcs M10 mm × 45 mm
*1-1/2" 1.900" 42 bar 0–0.06" 2.638" 4.212" 1.693"
*50 mm 57 mm 600 psi 0–1.6 mm 78 mm 117 mm 43 mm 2 pcs M10 mm × 50 mm
*2" 2.244" 42 bar 0–0.06" 3.071" 4.606" 1.693"
*50 mm 60.3 mm 600 psi 0–1.6 mm 79 mm 118 mm 43 mm 2 pcs M10 mm × 50 mm
*2" 2.375" 42 bar 0–0.06" 3.110" 4.645" 1.693"
*65 mm 73 mm 600 psi 0–1.6 mm 94 mm 135 mm 44 mm 2 pcs M10 mm × 50 mm
*2-1/2" 2.875" 42 bar 0–0.06" 3.700" 5.315" 1.732"
*65 mm 76.1 mm 600 psi 0–1.6 mm 95 mm 135 mm 44 mm 2 pcs M10 mm × 50 mm
*2-1/2" 3.000" 42 bar 0–0.06" 3.740" 5.315" 1.732"
*80 mm 88.9 mm 600 psi 0–1.6 mm 110 mm 151 mm 45 mm 2 pcs M10 mm × 50 mm
*3" 3.500" 42 bar 0–0.06" 4.330" 5.945" 1.771"
100 mm 108 mm 600 psi 0–3.2 mm 137 mm 184 mm 47 mm 2 pcs M12 mm × 60 mm
4" 4.251" 42 bar 0–0.13" 5.394" 7.244" 1.850"
100 mm 114.3 mm 600 psi 0–3.2 mm 142 mm 190 mm 48 mm 2 pcs M12 mm × 60 mm
4" 4.500" 42 bar 0–0.13" 5.591" 7,480" 1.890"
125 mm 133 mm 600 psi 0–3.2 mm 162 mm 216 mm 48 mm 2 pcs M12 mm × 65 mm
5" 5.250" 42 bar 0–0.13" 6.378" 8.504" 1.890"
125 mm 139.7 mm 600 psi 0–3.2 mm 167 mm 216 mm 48 mm 2 pcs M12 mm × 65 mm
5" 5.500" 42 bar 0–0.13" 6.575" 8.504" 1.890"
150 mm 159 mm 600 psi 0–3.2 mm 190 mm 240 mm 50 mm 2 pcs M12 mm × 75 mm
6" 6.259" 42 bar 0–0.13" 7.480" 9.448" 1.968"
150 mm 168.3 mm 600 psi 0–3.2 mm 196 mm 246 mm 50 mm 2 pcs M12 mm × 75 mm
6" 6.625" 42 bar 0–0.13" 7.717" 9.685" 1.968"
200 mm 219.1 mm 600 psi 0–3.2 mm 253 mm 325 mm 58 mm 2 pcs M16 mm × 90 mm
8" 8.625" 42 bar 0–0.13" 9.961" 12.795" 2.283"
250 mm 273 mm 600 psi 0–3.2 mm 315 mm 396 mm 62 mm 2 pcs M20 mm × 110 mm
10" 10.750" 42 bar 0–0.13" 12.401" 15.590" 2.441"
*300 mm 323.9 mm 600 psi 0–3.2 mm 372 mm 452 mm 65 mm 2 pcs M24 mm × 130 mm
*12" 12.750" 42 bar 0–0.13" 14.645" 17.795" 2.559"

Note: The the model with "*" are under development.

C Ductile Iron

The Model C is designed for connection of grooved medium pressure pipe systems.

A piece of c ductile iron flexible coupling on white background.

C Ductile Iron

A drawing of c ductile iron flexible coupling on white background.

C Ductile Iron

  • Size: 1" – 16" (DN25 – DN400)
  • Working Pressure: 600 psi (42 bar)
  • Applicable pipelines: for Sch 40S cut grooved pipes only
  • Housing Material: Ductile iron to ASTM A536 QT450-12
  • Surface Finish: Electrostatic spray molding, available in colors: red, blue, silver
  • Rubber Gasket: The gasket seals is C-shaped, made of standard gasket EPDM (ethylene propylene diene monomer) for cold water, hot water, rare acid, oil-free air and multiple chemical product (-34 °C to +150 °C). It is not suitable for medium like petroleum.
  • Bolts & Nuts: Round-head, elliptoid-neck, carriage bolts, type carbon iron covered with zinc.
Read MoreRead Less
Table 5: Model C Ductile Iron Flexible Coupling Specification
Nominal Size Pipe O.D. Working Pressure Pipe End Separation Coupling Dimensions Coupling Bolts
X Y Z Qty. Size
(mm/in.) (mm/in.) (psi/bar) (mm/in.) (mm/in.) (mm/in.) (mm/in.) pcs mm
25 mm 33.7 mm 600 psi 0–1.6 mm 58 mm 99 mm 44 mm 2 pcs M10 mm × 45 mm
1" 1.315" 42 bar 0–0.06" 2.283" 3.898" 1.732"
32 mm 42.4 mm 600 psi 0–1.6 mm 67 mm 107 mm 45 mm 2 pcs M10 mm × 45 mm
1-1/4" 1.660" 42 bar 0–0.06" 2.637" 4.212" 1.771"
40 mm 48.3 mm 600 psi 0–1.6 mm 74 mm 112 mm 45 mm 2 pcs M10 mm × 45 mm
1-1/2" 1.900" 42 bar 0–0.06" 2.913" 4.409" 1.771"
*50 mm 57 mm 600 psi 0–1.6 mm 86 mm 124 mm 45 mm 2 pcs M10 mm × 55 mm
*2" 2.244" 42 bar 0–0.06" 3.385" 4.882" 1.771"
50 mm 60.3 mm 600 psi 0–1.6 mm 86 mm 124 mm 45 mm 2 pcs M10 mm × 55 mm
2" 2.375" 42 bar 0–0.06" 3.385" 4.882" 1.771"
65 mm 73 mm 600 psi 0–1.6 mm 100 mm 139 mm 46 mm 2 pcs M10 mm × 55 mm
2-1/2" 2.875" 42 bar 0–0.06" 3.937" 5.472" 1.811"
65 mm 76.1 mm 600 psi 0–1.6 mm 103 mm 142 mm 47 mm 2 pcs M10 mm × 55 mm
2-1/2" 3.000" 42 bar 0–0.06" 4.055" 5.591" 1.851"
80 mm 88.9 mm 600 psi 0–1.6 mm 117 mm 165 mm 47 mm 2 pcs M12 mm × 60 mm
3" 3.500" 42 bar 0–0.06" 4.606" 6.496" 1.851"
*100 mm 102 mm 500 psi 0–3.2 mm 137 mm 192 mm 52 mm 2 pcs M12 mm × 65 mm
*4" 4.016" 35 bar 0–0.13" 5.393" 7.559" 2.047"
100 mm 108 mm 500 psi 0–3.2 mm 140 mm 185 mm 52 mm 2 pcs M12 mm × 65 mm
4" 4.250" 35 bar 0–0.13" 5.511" 7.283" 2.047"
100 mm 114.3 mm 500 psi 0–3.2 mm 141 mm 188 mm 52 mm 2 pcs M12 mm × 65 mm
4" 4.500" 35 bar 0–0.13" 5.551" 7.401" 2.047"
125 mm 133 mm 450 psi 0–3.2 mm 177 mm 220 mm 52 mm 2 pcs M12 mm × 75 mm
5" 5.250" 31 bar 0–0.13" 6.968" 8.661" 2.047"
125 mm 140 mm 450 psi 0–3.2 mm 180 mm 242 mm 52 mm 2 pcs M12 mm × 75 mm
5" 5.511" 31 bar 0–0.13" 7.086" 9.527" 2.047"
150 mm 159 mm 450 psi 0–3.2 mm 196 mm 245 mm 52 mm 2 pcs M12 mm × 75 mm
6" 6.259" 31 bar 0–0.13" 7.716" 9.645" 2.047"
*150 mm 165.1 mm 450 psi 0–3.2 mm 200 mm 247 mm 52 mm 2 pcs M12 mm × 75 mm
*6" 6.500" 31 bar 0–0.13" 7.874" 9.724" 2.047"
150 mm 168.3 mm 450 psi 0–3.2 mm 201 mm 249 mm 52 mm 2 pcs M12 mm × 75 mm
6" 6.625" 31 bar 0–0.13" 7.913" 9.803" 2.047"
200 mm 219.1 mm 450 psi 0–3.2 mm 252 mm 330 mm 61 mm 2 pcs M16 mm × 90 mm
8" 8.625" 31 bar 0–0.13" 9.921" 12.992" 2.401"
250 mm 273 mm 350 psi 0–3.2 mm 328 mm 414 mm 65 mm 2 pcs M22 mm × 130 mm
10" 10.750" 25 bar 0–0.13" 12.913" 16.299" 2.559"
300 mm 323.9 mm 350 psi 0–3.2 mm 392 mm 466 mm 65 mm 2 pcs M24 mm × 165 mm
12" 12.750" 25 bar 0–0.13" 15.433" 18.346" 2.559"
*350 mm 355 mm 300 psi 0–3.2 mm 406 mm 445 mm 75 mm 3 pcs M24 mm × 180 mm
*14" 14.000" 21 bar 0–0.13" 15.984" 17.519" 2.952"
*350 mm 377 mm 300 psi 0–3.2 mm 420 mm 470 mm 75 mm 3 pcs M24 mm × 210 mm
*14" 14.000" 21 bar 0–0.13" 16.535" 18.503" 2.952"
*400 mm 406 mm 300 psi 0–3.2 mm 479 mm 522 mm 75 mm 3 pcs M30 mm × 240 mm
*16" 16.000" 21 bar 0–0.13" 18.858" 20.551" 2.952"
*400 mm 426 mm 300 psi 0–3.2 mm 500 mm 590 mm 79 mm 3 pcs M30 mm × 240 mm
*16" 16.000" 21 bar 0–0.13" 19.685" 23.228" 3.110"
Note: The model with "*" are under development.
Videos
Downloads

Here are product catalogue and data sheet for your reference. more information just contact us.

The nuonuo is answering the phone.
Interested?