Hebei Ruijie Pipe Industry Co., Ltd. is one of the most reliable manufacturers and suppliers of blue pvc coupling in China. With abundant experience, we warmly welcome you to buy high quality blue pvc coupling for sale here from our factory. Also, pricelist and free sample are available.
The blue PVC coupling is the most commonly used fitting in drainage systems. Made by one-piece injection molding, it features equal-diameter sockets at both ends that bond securely to same-spec pipes with PVC solvent cement. It is mainly used to extend pipe runs in a straight line or to repair broken sections after cutting them out. Compatible with the full range of blue PVC drainage pipes, it is easy to install, reliable in bonding, and works for both residential and commercial drainage projects.
Product Advantages
1. Double-end equal-diameter sockets ensure good coaxial alignment after insertion, with neat, straight joints.
2. Standard socket depth, paired with proper solvent cement, delivers a leak-free, secure bond that won't come apart.
3. Made from virgin PVC-U material by injection molding, with uniform wall thickness and strong impact resistance-won't easily crack from job-site knocks.
4. Smooth inner wall without steps or ridges-no reduction in diameter, no flow restriction, no impact on drainage capacity.
5. Uniform blue color matches the full series of pipes and fittings, giving the entire installation a clean, consistent look.
FAQ
Q: Do PVC couplings and PVC expansion joints serve the same function?
A: No. A coupling is a fixed bonded joint used only to extend pipe length-it has no expansion capability. An expansion joint is a flexible compensation fitting designed to absorb thermal movement. The two cannot replace each other.
Q: How many surfaces need glue when installing one coupling?
A: You need to apply cement to the inner walls of both coupling sockets plus the outer walls of the two pipe ends-four surfaces total. Push the pipe in all the way immediately after applying glue. Don't wait until the cement starts to tack up, or the bond will be weak.
Q: Can this coupling be used on pressurized potable water lines?
A: No. This is a non-pressure drainage fitting for gravity-flow systems only. It cannot handle supply water pressure. For pressurized applications, use fittings from the PVC water supply series.
Q: Can a coupling be used to repair a broken drainage pipe?
A: Yes. Cut out the damaged section, take a length of new pipe, and use two couplings to bridge the gap. Just make sure the cut is clean and square, and follow proper solvent-weld procedure.
Installation Instructions
1. Cut the pipe square and flat. Remove all burrs, dust, and oil from the pipe ends.
2. Do a dry fit first and mark the insertion depth on the pipe.
3. Apply PVC solvent cement evenly to both the socket inner wall and the pipe outer wall. Keep it thin and uniform-no missed spots, no heavy buildup.
4. Insert the pipe to the marked depth immediately after applying cement. A slight twist helps spread the glue evenly. Let it sit to set.
5. Do not twist, pull, or run water through the joint while the cement is curing.
6. After the full line is installed, run a water test to check all joints for leaks.
After-Sales Service
1. Every batch is inspected before shipment for appearance, dimensions, and fit. Defective products are not released from the warehouse.
2. Quality issues caused by raw material defects or molding process are covered by replacement or return per the order agreement.
3. Free product selection guidance and on-site installation technical support are available.
4. Large project orders can be assigned a dedicated after-sales contact, with full-process follow-up on delivery and field performance.
Hot Tags: blue pvc coupling, China blue pvc coupling manufacturers, factory, PVC Coupling Fittings, PVC Pipe Adapters, PVC Slip Fittings, PVC Socket Weld Fittings, PVC Threaded Fittings
