4 Inch Mechanical Joint Connection Coupling, Ductile Iron Construction. This particular fitting is a Coupling for Ductile Iron Pipe applications that features Mechanical Joint connections. A coupling is an important fitting as it is used in order to connect two sections of iron pipes. The coupling has 4 inch connections on either side. Its connections on either end feature “mechanical joint” style connections which have machine drilled holes for proper installation. The mechanical joint utilizes a nut and bolt system, and depending on the size of the pipe, there will be more bolts required for a secure connection. A coupling is often used in situations where a pipe has broken and needs to be repaired. The coupling allows you to fix a small section of pipe without having to replace the whole stretch of original pipe. Ductile Iron Pipe systems are most commonly used in the transportation of potable water.
| Product: | Couplings and Adapters |
| Manufacturer: | Star Pipe |
| Use: | Municipal |
| Connection Type: | Mechanical Joint (MJ) |
| Reducing: | Non-Reducing |
| Fitting Type: | Hub x Hub |
| Mpn # | MJSL04 |
| Weight | 22.00 lbs. |
