IFAN SCH40 UPVC Fitting

What are SCH40 UPVC fittings?

SCH40 UPVC fittings are standardized rigid thermoplastic piping components designed for pressurized water supply networks. The designation "SCH40" derives from the Schedule 40 wall thickness standard within ANSI/ASTM specifications; this standard defines precise parameters for outside diameter, wall thickness, and pressure ratings, ensuring dimensional interchangeability among products from various global manufacturers. The inherent properties of UPVC provide the rigidity, chemical inertness, and longevity required for professional water supply infrastructure projects.

Material Composition

UPVC differs from standard PVC by being completely free of plasticizers, resulting in a harder and more dimensionally stable material; it maintains its geometric shape under continuous pressure loads without deforming. This rigid molecular structure offers superior pressure resistance compared to flexible PVC alternatives. Furthermore, the material exhibits excellent resistance to chlorides, inorganic acids, alkalis, and various chemicals commonly found in municipal water treatment and distribution networks. UV stabilizers added during the compounding process significantly extend outdoor service life, preventing surface degradation and discoloration caused by prolonged sun exposure.

Applicable Standards

SCH40 UPVC fittings comply with several internationally recognized standards, including ASTM D2466 for socket-type fittings, ASTM D2467 for high-pressure socket-type fittings, and NSF/ANSI 61 certification confirming suitability for contact with potable water.

Installation Method

SCH40 UPVC fittings are joined using solvent welding (cementing); adhesive is applied to the mating surfaces of the pipe and fitting, which then cure and fuse into a unified, integral structure. Proper installation steps include: cleaning surfaces with primer; applying solvent cement evenly to the pipe's exterior and the fitting's socket interior; and immediately assembling and applying pressure. This straightforward process requires minimal tooling and creates a joint with pressure-bearing capabilities that exceed those of the pipe itself.

Application Scenarios

SCH40 UPVC pipe fittings are widely used in applications such as municipal cold water distribution mains, residential water supply branch lines, agricultural irrigation networks, swimming pool circulation systems, industrial process water piping, and distribution mains for wastewater treatment plants; in these scenarios, chemical corrosion resistance and pressure integrity are critical operational requirements.

IFAN offers a wide range of UPVC fittings-including all-plastic versions and those with embedded inserts-to meet diverse application needs. We also provide product certifications to give you complete confidence in our products. Our standards are built upon the use of high-quality raw materials and advanced manufacturing processes, complemented by rigorous pre-shipment inspections.

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