Hebei Ruijie Pipe Industry Co., Ltd. is one of the most reliable manufacturers and suppliers of blue pvc core repair in China. With abundant experience, we warmly welcome you to buy high quality blue pvc core repair for sale here from our factory. Also, pricelist and free sample are available.
The Blue PVC core repair is an embedded transition fitting used for pipe diameter reduction in drainage systems. It is injection molded from virgin PVC-U material, featuring a standard external spigot at one end and an internal socket at the other. By embedding it into a larger fitting with solvent cement, diameter conversion is achieved. Specially designed for non-pressure gravity drainage systems, it is compatible with the same series of blue PVC-U drainage pipes and fittings, meeting the needs of residential, commercial, and overseas engineering bulk procurement.
Core Advantages
Embedded compact structure - enables diameter reduction even in narrow spaces such as ceiling cavities and pipe shafts.
One‑piece injection molding with no welded joints, ensuring reliable structural strength.
Strict tolerance control on spigot outer diameter, ensuring uniform fit clearance with larger fitting sockets.
Smooth internal flow channel transition reduces local turbulence and lowers the probability of debris clogging.
Resistant to acid and alkali corrosion from domestic sewage, with stable impact resistance in low‑temperature environments.
Common reducing sizes are well‑stocked and can be shipped mixed with other pipes and fittings in one container.
Product Features
Directly inserts into the socket of a larger fitting without requiring an additional connection section.
Installation only requires applying cement and inserting - no heat fusion welding equipment needed.
Molded size markings on the outer wall for quick on‑site identification.
Fully compatible with the same series of fittings including elbows, tees, and expansion joints.
Product Applications
Transition connection when old and new drainage pipe diameters differ in residential kitchens and bathrooms.
Local diameter reduction nodes in ceiling drainage pipelines of commercial buildings.
Drainage renovation projects in old residential communities, adapting to existing pipe sizes.
Suitable for ceiling installation, wall embedding, and indoor underground burial.
Not suitable for:pressurized water supply, high‑temperature wastewater, or strong chemical solvent transportation.
Installation Instructions
Wipe the reducing bush spigot and the larger fitting socket with a dry cloth to remove dust and oil.
Evenly apply PVC solvent cement to the outer wall of the spigot and the inner wall of the socket.
Fully push the reducing bush into the socket and rotate approximately a quarter turn to distribute the cement evenly.
After bonding, allow 24 hours for the cement to fully cure. Do not allow water flow, impact, or movement during this period.
For long‑distance pipelines, it is recommended to install expansion joints to compensate for PVC thermal expansion and contraction.
Factory Advantages
In-house injection molding workshop with batch sampling inspection on three core indicators: wall thickness, sealing performance, and low‑temperature impact.
Mainstream specifications are kept in stock, ensuring controllable lead times for large orders.
Mixed packing of multiple categories of plastic pipes and fittings is supported for one‑stop procurement.
FAQ
Q: What is the difference between a reducing bush and a reducer coupling?
A: A reducing bush is embedded inside a larger fitting, taking up minimal space - ideal for narrow locations. A reducer coupling is a standalone fitting with sockets at both ends, suitable for direct diameter reduction between two pipe sections.
Q: Can it be directly buried in an outdoor open environment?
A: Long‑term outdoor exposure to sunlight is not recommended. UV protection treatment is required for outdoor use.
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