MECHANICAL PP-RCT pipes.
The durable and low-maintenance plastic pipe system
✓ 75 % less linear expansion
✓ Fewer attachment points
✓ Higher flow rate
✓ Up to 80 % lighter than steel
✓ Easy, safe installation
- 75 % less linear expansion compared to single-layer PP-R pipes
This reduces the requirements for linear expansion allowances - Outstanding stability
Fewer fixing points required, therefore faster installation and approx. 30 % fewer fixing points compared to standard plastics
Linear expansion almost identical to that of metal pipes - Higher flow rate due to thinner walls
- Up to 80% lower weight compared to steel or copper
Overview MECHANICAL PP-RCT pipe system
| Outer Ø (mm) | SDR 7,4 | SDR 11 | SDR 17,6 | Welding method |
| 20 | ✓ | – | – | Socket welding |
| 25 | ✓ | – | – | Socket welding |
| 32 | – | ✓ | – | Socket welding |
| 40 | – | ✓ | – | Socket welding |
| 50 | – | ✓ | – | Socket welding |
| 75 | – | ✓ | – | Socket welding |
| 90 | – | ✓ | – | Socket welding |
| 110 | – | ✓ | – | Socket welding |
| 125 | – | ✓ | ✓ | Socket welding |
| 160 | – | ✓ | ✓ | Butt welding |
| 200 | – | ✓ | ✓ | Butt welding |
| 250 | – | ✓ | ✓ | Butt welding |
| 315 | – | ✓ | ✓ | Butt welding |
| 355 | – | ✓ | ✓ | Butt welding |
| 400 | – | ✓ | ✓ | Butt welding |
| 450 | – | ✓ | ✓ | Butt welding |
| 500 | – | – | ✓ | Butt welding |
Product overview MECHANICAL PP-RCT pipes, dimensions.
MECHANICAL GRAY PP-RCT pipe SDR 7.4/11/17.6
Material: PP-RCT, multi-layer tube, fibre-reinforced
Colour: Grey
Standards: DIN 8077/78, EN ISO 15874, ASTM 2389, NSF14
Certificate: ICC-ES PMG 1458
Available sizes: 20-500 mm
Tube length: 20-500 mm in 5.8 m length, special lengths on request
| SDR | Article number | Outer Ø(mm) | Wall thickness | Inner Ø(mm) | Water flow rate (l/m) | Weight (kg/m) | Packing unit (m) |
| 7,4 | 680322 | 20 | 2,8 | 14,4 | 0,16 | 0,15 | 145,0 |
| 7,4 | 680323 | 25 | 3,5 | 18,0 | 0,25 | 0,24 | 87,0 |
| 11 | 680324 | 32 | 2,9 | 26,2 | 0,53 | 0,26 | 58,0 |
| 11 | 680325 | 40 | 3,7 | 32,6 | 0,83 | 0,41 | 29,0 |
| 11 | 680326 | 50 | 4,6 | 40,8 | 1,31 | 0,64 | 29,0 |
| 11 | 680327 | 63 | 5,8 | 51,4 | 2,08 | 1,01 | 17,4 |
| 11 | 680328 | 75 | 6,8 | 61,4 | 2,94 | 1,41 | 11,6 |
| 11 | 680329 | 90 | 8,2 | 73,6 | 4,25 | 2,03 | 5,8 |
| 11 | 680330 | 110 | 10,0 | 90,0 | 6,36 | 3,01 | 5,8 |
| 11 | 680331 | 125 | 11,4 | 102,2 | 8,20 | 3,91 | 5,8 |
| 11 | 680333 | 160 | 14,6 | 130,8 | 13,44 | 6,41 | 5,8 |
| 11 | 680334 | 200 | 18,2 | 163,6 | 21,03 | 10,00 | 5,8 |
| 11 | 680335 | 250 | 22,7 | 204,6 | 32,87 | 15,60 | 5,8 |
| 11 | 680346 | 315 | 28,6 | 257,8 | 52,20 | 24,60 | 5,8 |
| 11 | 680347 | 355 | 32,2 | 290,6 | 66,33 | 31,20 | 5,8 |
| 11 | 680348 | 400 | 36,3 | 327,4 | 84,18 | 39,60 | 5,8 |
| 11 | 680349 | 450 | 40,9 | 368,2 | 106,47 | 50,10 | 5,8 |
| 17,6 | 680351 | 125 | 7,1 | 110,8 | 9,64 | 2,55 | 5,8 |
| 17,6 | 680353 | 160 | 9,1 | 141,8 | 15,79 | 4,17 | 5,8 |
| 17,6 | 680354 | 200 | 11,4 | 177,2 | 24,66 | 6,50 | 5,8 |
| 17,6 | 680355 | 250 | 14,2 | 221,6 | 38,57 | 10,10 | 5,8 |
| 17,6 | 680366 | 315 | 17,9 | 279,2 | 61,22 | 16,00 | 5,8 |
| 17,6 | 680367 | 355 | 20,1 | 314,8 | 77,83 | 20,30 | 5,8 |
| 17,6 | 680368 | 400 | 22,7 | 354,6 | 98,75 | 25,70 | 5,8 |
| 17,6 | 680369 | 450 | 25,5 | 399,0 | 125,03 | 32,50 | 5,8 |
| 17,6 | 680370 | 500 | 28,4 | 443,2 | 154,27 | 40,20 | 5,8 |
Operating pressures
Long-term behaviour with a safety factor of 1.25
| Temperature | Operating time | Max. Operating pressure SDR 11 (bar) | Max. Operating pressure SDR 11 (psi) | Max. Operating pressure SDR 17.6 (bar) | Max. Operating pressure SDR 17.6 (psi) |
| -10°-10°C | 1 | 22,8 | 331 | 13,7 | 199 |
| -10°-10°C | 5 | 22,1 | 321 | 13,3 | 193 |
| -10°-10°C | 10 | 21,9 | 318 | 13,1 | 190 |
| -10°-10°C | 25 | 21,5 | 312 | 12,9 | 187 |
| -10°-10°C | 50 | 21,2 | 307 | 12,7 | 184 |
| 15° C | 1 | 22,1 | 321 | 13,2 | 191 |
| 15° C | 5 | 21,4 | 310 | 12,5 | 181 |
| 15° C | 10 | 21,0 | 305 | 12,0 | 174 |
| 15° C | 25 | 20,2 | 293 | 11,9 | 173 |
| 15° C | 50 | 19,5 | 283 | 11,5 | 167 |
| 20° C | 1 | 19,9 | 289 | 11,9 | 173 |
| 20° C | 5 | 19,3 | 280 | 11,6 | 168 |
| 20° C | 10 | 19,0 | 276 | 11,4 | 165 |
| 20° C | 25 | 18,6 | 270 | 11,2 | 162 |
| 20° C | 50 | 18,4 | 267 | 11,0 | 160 |
| 30° C | 1 | 17,2 | 249 | 10,3 | 149 |
| 30° C | 5 | 16,6 | 241 | 10,0 | 145 |
| 30° C | 10 | 16,4 | 238 | 9,8 | 142 |
| 30° C | 25 | 16,1 | 234 | 9,6 | 139 |
| 30° C | 50 | 15,8 | 229 | 9,5 | 138 |
| 40° C | 1 | 14,8 | 215 | 8,9 | 129 |
| 40° C | 5 | 14,3 | 207 | 8,6 | 125 |
| 40° C | 10 | 14,1 | 205 | 8,4 | 122 |
| 40° C | 25 | 13,8 | 200 | 8,3 | 120 |
| 40° C | 50 | 13,6 | 197 | 8,1 | 117 |
| 50° C | 1 | 12,6 | 183 | 7,6 | 110 |
| 50° C | 5 | 12,2 | 177 | 7,3 | 106 |
| 50° C | 10 | 12,0 | 174 | 7,2 | 104 |
| 50° C | 25 | 11,7 | 170 | 7,0 | 102 |
| 50° C | 50 | 11,5 | 167 | 6,9 | 100 |
| 60° C | 1 | 10,7 | 155 | 6,4 | 93 |
| 60° C | 5 | 10,3 | 149 | 6,2 | 90 |
| 60° C | 10 | 10,1 | 146 | 6,1 | 88 |
| 60° C | 25 | 9,9 | 144 | 5,9 | 86 |
| 60° C | 50 | 9,7 | 141 | 5,8 | 84 |
| 70° C | 1 | 9,0 | 131 | 5,4 | 78 |
| 70° C | 5 | 8,6 | 125 | 5,2 | 75 |
| 70° C | 10 | 8,5 | 123 | 5,1 | 74 |
| 70° C | 25 | 8,3 | 120 | 5,0 | 73 |
| 70° C | 50 | 8,1 | 117 | 4,9 | 71 |
| 75° C | 1 | 8,3 | 120 | 5,2 | 75 |
| 75° C | 5 | 8,0 | 116 | 4,8 | 70 |
| 75° C | 10 | 7,7 | 112 | 4,5 | 65 |
| 75° C | 25 | 7,3 | 106 | 4,0 | 58 |
| 75° C | 50 | 6,8 | 99 | 3,8 | 55 |
| 80° C | 1 | 7,5 | 109 | 4,5 | 65 |
| 80° C | 5 | 7,2 | 104 | 4,3 | 62 |
| 80° C | 10 | 7,0 | 102 | 4,2 | 61 |
| 80° C | 25 | 6,9 | 100 | 4,1 | 59 |
| 90° C | 1 | 5,6 | 81 | 3,4 | 49 |
| 90° C | 5 | 5,3 | 77 | 3,2 | 46 |
| 90° C | 10 | 5,2 | 75 | 3,1 | 45 |
Questions about our MECHANICAL PP-RCT pipes?
We are happy to help you.
Phone +49 8342 7006 0 or simply use our contact form.
MECHANICAL is a brand of
Polymelt GmbH
Kirnachstraße 17
87640 Ebenhofen
Germany
M. +49 8342 7006 0
F. +49 8342 7006 66
E. mail@polymelt.com