Description

Westlake Pipe & Fittings 436007 0.75″ MPT x SKT Male Adapter

The Westlake Pipe & Fittings 436007 0.75″ Male Adapter is a precision-engineered PVC plumbing fitting designed for connecting pipes and components within Schedule 40 systems where a transition between a male pipe thread (MPT) and a socket (SKT) connection is required. This adapter embodies the core strengths of Westlake Pipe & Fittings — a trusted North American leader in PVC pipe and fittings manufacturing with more than five decades of experience supplying products to plumbing, industrial, municipal, irrigation, pool/spa, and electrical markets.

At the heart of the 436007 adapter’s purpose is its ability to bridge two very common joining methods used in PVC plumbing systems: threaded connections and socketized (slip) connections. The MPT end features standard ¾-inch male national pipe threads, which are precisely molded to ensure reliable engagement with corresponding female threaded fittings, valves, or equipment ports. The socket (SKT) end is molded to accept a ¾-inch OD Schedule 40 PVC pipe, allowing it to be solvent-welded (glued) directly. This dual-interface makes the adapter exceptionally versatile in retrofit work, customized plumbing assemblies, and layout designs where plumbing elements of different joining standards must be integrated cleanly.

Crafted from high-quality polyvinyl chloride (PVC) — a material widely used in modern plumbing systems — this adapter delivers a balance of strength, chemical resistance, longevity, and cost-effectiveness. PVC has long been a preferred choice for non-metallic piping applications because it resists corrosion, scaling, and degradation from a range of chemical environments while remaining lightweight and easy to install. PVC’s proven durability means systems built with these fittings can have extended service life and minimal maintenance needs when installed according to industry best practices.

Schedule 40 PVC is one of the most ubiquitous pipe specifications in residential, commercial, and industrial plumbing due to its standardized wall thickness and pressure-handling characteristics. When used with properly solvent-welded socket connections and correctly sealed threaded joints, Schedule 40 systems can withstand a broad range of normal operating pressures encountered in potable water lines, irrigation systems, pool and spa plumbing, and various fluid transport systems. While this adapter itself is not pressure–rated individually, it is designed to meet system performance when integrated into a correctly engineered Schedule 40 assembly.

What sets the 436007 adapter apart from simpler couplings is its male thread to socket design. This design allows the installer to join a threaded fitting — such as a valve, pump connection, or threaded fixture — directly to a run of PVC pipe without the need for additional bushings or couplers. This reduction in intermediary components can simplify installations, reduce potential leak points, and often lower material costs.

On the MPT side, the male threads are molded with precise dimensional tolerances so that when paired with tape or thread sealant and engaged into a compatible female fitting, the result is a tight, leak-resistant mechanical seal. On the socket side, the interior is optimized for solvent cement bonding. When the installer applies the correct primer and solvent cement (as recommended for Schedule 40 PVC), the resulting chemical weld produces a virtually monolithic joint between the adapter and the pipe. This ensures structural cohesion and fluid integrity unseen with mechanical fittings alone.

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.