Lasco Fittings 436015 1.5In MPT X SKT Male Adapter Schedule 40

Description

Westlake Pipe & Fittings 436015 1.5″ MPT x SKT Male Adapter

The Westlake Pipe & Fittings 436015 1.5″ Male Adapter is a specialized plumbing fitting designed for joining two different connection types in a PVC piping system — specifically a threaded “Male Pipe Thread” (MPT) end and a smooth “Socket” (SKT) end suitable for solvent welding. This seemingly simple adapter plays a critical role in ensuring secure, reliable transitions between components, making it indispensable for both residential and commercial plumbing, irrigation, pool/spa systems, and general fluid handling applications where PVC (polyvinyl chloride) pipe is used.

In essence, this adapter serves as a transitional connector. One end features standard 1.5-inch male pipe threads (MPT), which can be screwed directly into correspondingly threaded female fittings, valves, or equipment in a plumbing system. The opposite end is a 1.5-inch socket — a smooth, cylindrical port engineered to accept a matching Schedule 40 PVC pipe end. Installation on this end uses solvent cement (PVC glue), creating a chemical bond between the adapter and the pipe that is both robust and watertight. This dual connection capability makes the fitting versatile for diverse assembly configurations where threaded and non-threaded elements must be linked seamlessly.

Constructed from high-quality Schedule 40 PVC, this adapter is built for durability, long-term performance, and resistance to many of the challenges that degrade lesser materials. PVC is widely valued in plumbing and fluid systems for its natural resistance to corrosion, rust, and chemical attack, which enables it to maintain integrity over many years of service. Its lightweight yet rigorous formulation helps installers handle and position fittings with relative ease, especially in complex assemblies where weight and maneuverability matter.

Schedule 40 PVC products like this adapter are manufactured to meet or exceed industry standards for dimensional accuracy and physical properties, ensuring predictable performance within rated systems. The material’s rigidity helps prevent deformation under pressure, and its smooth internal surfaces minimize friction and turbulence, optimizing fluid flow through the fitting.

Working with a fitting like the 436015 adapter requires some basic plumbing skill but follows well-established methods. For the socket end, PVC pipe that has been cut square and cleaned is typically coated with a compatible PVC primer and solvent cement. The pipe is then inserted fully into the socket and twisted slightly to ensure even cement distribution. This creates a strong, permanent connection that resists water pressure and external stress.

On the threaded side (MPT), standard plumbing practice dictates applying a thread-sealing compound — such as PTFE tape or liquid sealant — before threading the adapter into a matching female connection. Hand tightening, followed by a modest use of a wrench, typically ensures a snug and leak-resistant joint. Careful installation is vital: over-tightening plastic fittings can lead to stress cracks or misalignment.

While exact specifications may vary slightly by manufacturer or production batch, adapters of this type conform generally to Schedule 40 PVC dimensions — meaning they match the outside diameter and wall thickness specifications required for proper engagement with Schedule 40 PVC pipe. They are widely compatible with PVC piping of the same schedule and size, ensuring a standardized fit within most fluid systems.

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 436015 1.5″ MPT x SKT Male Adapter Features:

• Combines 1.5″ male pipe threads (MPT) with a socket (SKT) end for solvent welding into PVC pipe
• Resistant to corrosion, chemicals, and environmental factors common in fluid systems
• Eases handling and reduces overall system weight without compromising strength
• Matches industry Schedule 40 PVC specs for predictable fit and compatibility
• Solvent-weld socket and threaded MPT ends for straightforward joining
• Smooth internal passage minimizes turbulence and pressure loss
• Ideal for plumbing, irrigation, pool/spa, and general fluid systems
• Durable, corrosion-resistant Schedule 40 PVC construction

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