No need to mess about trying to repair, just replace from another digi. plenty of them around being broken and should last near enough forever since they're plastic! If you do bridge it, be careful with using 'strong' clamps as the pipe will collapse if you go mental tight, the ends have a brass washer in to prevent this.
the feed line is discontinued but the return is still available:
191 201 355 D - 22.68+VAT