Compact Connection for Tight Spaces
The Double Socket Coupling is a shorter and more compact version of our socket connector. It is ideal for installations with limited space. It also works well as a short spool piece between pipes. Both ends are sockets with EPDM sealing rings. Insert pipes into both ends and tighten. The coupling gives you a quick and reliable connection.
The coupling has a short overall length. It weighs less than our standard connector. This makes it easier to handle in valve pits and inspection chambers. The sealing rings are molded in one piece. They have precise dimensions and stable seal performance. The housing wall thickness and strength are the same as our standard products. The short length does not reduce strength or sealing. The coupling is used for replacing damaged pipe sections, temporary bypass connections, and filler pieces during valve replacement.
We use QT450 ductile iron for all our castings. The surface gets an epoxy powder coating. Our R&D team can optimize the product design based on your available installation space. We hold ISO 9001 certification. Our products have a health permit for drinking water. We test every product at 2.4 MPa for five minutes before shipping.

Perfect Fit for Pump Station Upgrade
A coastal city water plant was replacing a DN300 discharge valve. The new valve had a different length. There was a gap that needed filling. The plant used our Double Socket Coupling. The short length filled the gap perfectly. They did not need to modify the pipe layout. The valve replacement time was cut in half.
We offer a 10-year warranty. The product has a simple design with few parts. Maintenance requirements are low. The sealing ring lasts for many years. We stock DN50 to DN400 sizes.
Technical Specifications
|
Parameter |
Specification |
|
Application |
Tight spaces, pipe spool pieces, valve replacement |
|
Working Pressure |
≤1.6 MPa |
|
Housing Material |
QT450 ductile iron (compact double-socket) |
|
Sealing Material |
EPDM rubber (molded one-piece rings) |
|
Bolt Grade |
8.8 high-strength steel |
|
Surface Treatment |
Epoxy powder coating |
|
Diameter Range |
DN50 – DN400 |
|
Feature |
Compact size for confined spaces |
|
Warranty |
10 years |
Hot Tags: double socket coupling, China double socket coupling manufacturers, suppliers, factory

