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UPVC RRJ Fittings-PN10

In large-diameter water supply, municipal pipelines, chemical processing and underground piping systems, metal pipe fittings often suffer from corrosion, heavy weight, complex installation and high total cost — while cement-type UPVC fittings become difficult to install and maintain in larger sizes. XITA UPVC RRJ fittings are engineered to solve these problems: manufactured from 100% virgin UPVC with rubber ring joint (RRJ) flexible connection and PN10 pressure rating, they deliver fast, glue-free installation with reliable rubber-sealed joints that absorb thermal expansion, ground settlement and minor angular misalignment — making them ideal for large-diameter water supply, drainage, chemical and underground piping applications where metal and cement-type fittings are costly or impractical.

As an experienced UPVC fittings manufacturer, we offer a complete range of RRJ fittings in sizes from 63mm to 355mm, including 90° elbows, 45° elbows, tees, couplings, reducers, flanges and adapters — all with PN10 pressure rating and rubber ring flexible joint (available in F/F double-socket and F/M socket-and-spigot configurations). All products conform to BS EN ISO1452, ISO4422, DIN8063 and GB/T10002.2 standards, are available in grey, black and blue colors, and carry SGS and CE certification. Our UPVC RRJ fittings are non-toxic and suitable for potable water systems with no secondary contamination.

Why Our UPVC RRJ Fittings Perform Better

Rubber Ring Joint, Glue-Free Fast Install

The rubber ring joint (RRJ) design creates a flexible, pressure-tight seal simply by inserting the spigot into the socket — no cement, no welding, no curing time, and no specialized tools required. This dramatically reduces installation time and labor costs on large-diameter pipeline projects, and the flexible joint allows controlled axial movement and angular deflection, absorbing thermal expansion, ground settlement and minor pipeline misalignment that would cause rigid metal or cemented joints to crack or leak.

Corrosion Resistance & 50+ Year Life

Made from 100% virgin UPVC, our PN10 pipe fittings resist continuous exposure to acids, alkalis, salts, electrolytes and chemical solutions that rapidly corrode cast iron, steel and ductile iron fittings in underground and chemical service. With a service life exceeding 50 years under normal working pressure, they eliminate frequent replacement, excavation and maintenance costs associated with corroded metal pipeline fittings, delivering long-term, maintenance-free performance in water supply, drainage, sewage and industrial piping systems.

Smooth Bore, 30% Lower Flow Resistance

The smooth, non-scaling internal surface of our UPVC RRJ fittings minimizes friction, turbulence and pressure drop, with flow resistance 30% lower than cast iron and steel pipe fittings. This reduces pumping energy costs over the system's lifetime and maintains consistent flow rates even after decades of service — unlike metal fittings that suffer from rust buildup, tuberculation and gradually increasing flow resistance that degrades hydraulic efficiency and raises long-term operating costs in large-diameter water transmission networks.

Lightweight & 30–40% Lower Total Cost

Weighing only 1/6 of cast iron equivalents, our RRJ fittings are far easier to transport, handle and install in large-diameter and deep-trench applications — eliminating the need for heavy lifting equipment and reducing on-site labor costs. With total engineering cost 30–40% lower than cast iron or ductile iron systems — including material, transport, installation and long-term maintenance savings — our UPVC RRJ fittings deliver the most cost-effective large-diameter piping solution for municipal water supply, irrigation, drainage and industrial applications without compromising on pressure rating, durability or regulatory compliance.

Why Choose XITA as Your UPVC Fittings Manufacturer

With over 20 years focused exclusively on thermoplastic piping systems, XITA is a trusted UPVC fittings manufacturer serving customers in municipal water supply, chemical, water treatment, drainage, irrigation and construction industries worldwide. Our 3,000 m² ISO9001-certified factory has an annual capacity of 8,000 tons, with in-house mold making, injection molding, assembly and quality testing all under one roof.

20+ Years Specialized in Plastic Piping
ISO9001 Certified, SGS & CE Approved
8,000 Tons/Yr Capacity, On-Time Delivery
In-House R&D, OEM/ODM & Customization
63–355mm Full Size Range, Export Worldwide