Westlake Pipe & Fittings 458010 1″ PVC Threaded Union

Description

Westlake Pipe & Fittings 458010 1″ PVC Threaded Union

The Westlake Pipe & Fittings 458010 1″ Threaded Union is a versatile, essential component in any Schedule 40 PVC piping system, engineered for superior performance, ease of use, and long-lasting reliability in both residential and commercial plumbing, irrigation, pool, spa, and industrial applications where a dependable, serviceable union connection is required. Manufactured by Westlake Pipe & Fittings — a trusted name in PVC plumbing and pressure fittings (also marketed under brands such as Lasco Fittings in some regions) — this 1-inch PVC union is specifically designed with a female FNPT (Female National Pipe Thread) connection on both ends, allowing two pipes or fittings to be joined securely without solvent welding and enabling them to be easily disconnected for maintenance, inspection, repair, or system modification without cutting or re-gluing the pipeline.

The product’s configuration ensures a straight-through flow path that minimizes turbulence and pressure loss while maintaining a tight seal between joined sections, ideal for potable water systems, outdoor irrigation networks, above-ground drain lines, pool and spa plumbing, and other scenarios where threaded connections provide flexibility and serviceability. Molded from rigid PVC (Polyvinyl Chloride) material with Schedule 40 wall thickness, it adheres to ASTM D2466 standards for threaded PVC pressure fittings, offering exceptional corrosion resistance against water, acids, alkalis, salts, and many other chemicals, which makes it suitable for use in environments where metallic fittings would corrode prematurely.

The PVC construction also ensures that the union is significantly lighter than metal alternatives, reducing installation time and labor while maintaining strength for typical pressure applications up to 450 psi at 73°F (23°C) and a maximum temperature rating of approximately 140°F (60°C), allowing the union to support standard residential and commercial water pressures with a generous safety margin while retaining dimensional stability over years of use. The 1″ union includes standard NPT threads that mate with other threaded fittings or threaded pipe ends, allowing compatibility with a broad range of fittings, valves, and adaptors — and though thread sealant is not pre-applied, the simplicity of adding Teflon tape or pipe dope during installation means the installer can ensure a watertight seal tailored to the application.

With an overall length of just over 2¼ inches and a compact footprint, the 458010 fits easily into tight spaces in equipment rooms, beneath sinks, or in fabricated assemblies where space constraints demand a union that does not sacrifice accessibility or integrity. The union’s white PVC finish offers good resistance to ultraviolet degradation when installed above ground, though like all PVC products, prolonged direct sun exposure should be mitigated with insulation or shading if aesthetics and long-term UV resilience are critical.

Beyond its mechanical properties, the Westlake/Lasco 458010 upholds important certifications — including compliance with NSF-ANSI Standard 14 for plastic piping system components and NSF-ANSI Standard 61 for drinking water system components — so it can be confidently used in potable water systems without concern for adverse effects on water quality, giving homeowners and professionals peace of mind that the component meets recognized third-party health and safety criteria that govern piping applications conveying water for human consumption.

This union is engineered for durability and simplicity: its injection-molded fabrication ensures consistent wall thickness and dimensional precision that align with Schedule 40 PVC pipe dimensions, enabling flush and seamless integration with standard PVC threads. Because it does not employ solvent welding, this threaded union is particularly useful in systems that may require future disassembly for component upgrades, pump access, or seasonal closures in pool or irrigation systems, providing a convenient disconnect point that preserves the integrity of the piping without cutting. Moreover, its compatibility across multiple applications — from water treatment lines, rain-harvesting networks, and low-pressure recirculation loops to temporary hookups and retrofit installations — makes it a go-to choice for plumbing contractors, do-it-yourself enthusiasts, facility maintenance teams, and irrigation professionals alike.

Westlake Pipe & Fittings is dedicated to helping contractors maximize efficiency and helping engineers design systems that entire communities can rely on.With manufacturing & distribution centers across North America, dedicated sales, technical services, specification engineers and customer support teams, our unparalleled service allows you to design, specify and install complete projects with confidence.

Westlake Pipe & Fittings 458010 1″ PVC Threaded Union Features:

• Schedule 40 design for compatibility with Standard SCH 40 PVC systems
• Provides a secure, leak-resistant joint suitable for a variety of applications
• 1″ PVC threaded union with female NPT connections (FNPT × FNPT)
• Constructed from durable corrosion-resistant PVC for long service life
• Ideal for plumbing, irrigation, pool/spa, and potable water systems
• Easy installation, removal, and maintenance without cutting pipe
• Maximum operating pressure up to ~450 psi 73 °F
• Temperature tolerance up to ~140 °F

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