Black Couplers / EF / PN25 / SDR7.4

Black Couplers / MB-UB / PN25 / SDR7.4

The Frialen PE100 SDR7.4 black coupler range is made up of a combination of MB and UB style couplers. MB & UB couplers both feature large insertion depths for pipe stability during fusion (no holding clamps required) and extra-wide fusion and cold zones for maximum melt containment. Exposed heating coils for direct heat transmission to the pipe and a small annular gap to ensure optimum joining pressure in the fusion zone.  

UB SDR7.4 coupler sizes dn ≥ 280 include a barcode PREHEAT function to warm the pipe and coupler to help re-round oval pipes and close the fusion gap prior to welding and size dn ≥ 250 feature permanent external reinforcement wound into the body of the coupler to ensure the coupler does not expand during the fusing process. 

Note: Couplers that are not injection moulded and do not have external reinforcement are likely to expand during fusion.  Coupler expansion increases the gap between the pipe and coupler, which reduces weld pressure in the joint. This leads to slow crack growth failure through the weld plane.  Slow Crack Growth, by its name, is slow and occurs over time (1-5 years), well beyond the joint successfully passing hydrostatic testing on site. DSD Appendix 5A Clause 5.6.13, requires non-injection moulded couplers to have a suitable form of external reinforcement to prevent expansion applied to the coupler as parts of it's manufacture.

A visual pop up fusion indicator confirms weld pressure and traceability bar codes are included for recording batch GIS and BIM records for each coupler installed.  All couplers are sealed in individual plastic bags for protection on site.

NOTE: The pipe or spigot ends and the coupler must be prepared in accordance with the general installation instructions using a spigot mechanical peeler, 90% Isopropyl alcohol wipes and we recommend using the Friamat fusion control unit for logging the full range of weld data. Frialen UB SDR7.4 Electrofusion couplers are made in Germany.

MB couplers ≤ dn63 and SDR9 Couplers dn90 to dn355 are fully rated for PN25 / SDR7.4.
Product Code dn D L L1 L2 Z Availability in Hong Kong
P3316.150.063 63 82 110 55 29 2 Ex-Stock
P3318.100.090 90 117 138 69 41 - Ex-Stock
P3318.100.110 110 142 159 79 48 - 8-12 Weeks
P3318.100.125 125 160 172 86 46 - Ex-Stock
P3318.100.160 160 206 203 101 62 - 8-12 Weeks
P3318.100.180 180 225 210 105 63 - Ex-Stock
P3318.100.200 200 250 224 112 67 - 8-12 Weeks
P3318.100.225 225 280 240 120 73 - 8-12 Weeks
P3318.100.250 250 315 246 123 68 - 8-12 Weeks
P3318.098.280 280 355 268 134 84 - 8-12 Weeks
P3318.098.315 315 400 285 142 79 - 8-12 Weeks
P3318.098.355 355 450 300 150 88 - 8-12 Weeks

 

MB Couplers dn20-63

UB Couplers dn90-355