Lasco Fittings 436131 1In X 0.75In MPT X SKT Male Reducing Adapter Schedule 40

Description

Westlake Pipe & Fittings 436131 1″ x 0.75″ MPT x SKT Male Reducing Adapter

The Westlake Pipe & Fittings 436131 is a precision-manufactured 1″ x 0.75″ male reducing adapter, designed to provide a smooth, reliable transition between differing pipe sizes in PVC piping systems. This reducing adapter combines rugged durability with practical installation features, making it an essential component for residential, commercial, and industrial plumbing projects requiring secure and efficient connections between pipes of different nominal diameters.

At its core, this fitting allows a 1-inch male pipe thread (MPT) connection to interface with a ¾-inch solvent weld socket (SKT) connection, effectively reducing the pipe size while maintaining an engineered path for fluid flow. The design meets the exacting standards expected by installers and engineers, ensuring performance that is both predictable and dependable in everyday use.

Manufactured from high-quality PVC (polyvinyl chloride), the 436131 adapter leverages the inherent advantages of PVC material. PVC has long been a material of choice for plumbing and fluid handling applications due to its exceptional corrosion resistance, chemical inertness, and lightweight nature. These characteristics allow PVC fittings to withstand a wide range of environmental conditions without degrading, rusting, or succumbing to chemical attack, which makes them highly suitable for both outdoor and indoor piping configurations.

This adapter is produced to conform with Schedule 40 PVC standards, signifying a wall thickness and pressure-handling capability suitable for typical pressure (potable and non-potable water) and gravity systems. Schedule 40 PVC is widely used for water supply, irrigation, pool and spa plumbing, and general construction applications. Its standardized dimensions promote compatibility and interchangeability with other Schedule 40 pipe and fittings.

One of the defining design features of the 436131 adapter is its MPT x SKT configuration—a threaded male end and a solvent-weld socket end. The male pipe threading (MPT) complies with standard pipe thread dimensions, enabling it to engage securely with a corresponding female threaded receiver on valves, equipment ports, or other threaded fittings. This threaded joint, when properly sealed with thread tape or a compatible sealant, offers a leak-resistant mechanical connection that is robust under various service conditions.

Conversely, the socket end is designed for solvent welding to a plain-ended PVC pipe. Solvent welding (using PVC cement) creates a chemical bond between the adapter and the pipe, forming a permanent, pressure-tight connection. Solvent-welded joints are highly reliable and are preferred in many installations for their strength and leak-proof performance, especially in buried or concealed pipe runs.

The combination of a threaded connection on one side and a solvent weld on the other makes this fitting incredibly versatile. It facilitates transitions between system components that may be inherently dissimilar—such as adapting a threaded pump outlet to a smooth-bore PVC pipeline or connecting a valve to a smaller branch line.

Despite its compact size, this adapter is engineered for performance. The underlying PVC material provides stability at a wide range of temperatures typically encountered in residential and commercial plumbing applications. It resists scale formation and biological growth, ensuring the interior surface remains smooth and free-flowing. Unlike metal counterparts, PVC does not corrode, which significantly extends service life and reduces maintenance needs.

The design accommodates hydraulic flow while minimizing turbulence and pressure losses often associated with abrupt dimensional transitions. This can be especially important in systems where optimizing flow efficiency matters, such as irrigation lines, pool circulation loops, and pressure-fed water 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 436131 1″ x 0.75″ MPT x SKT Male Reducing Adapter Features:

• This product is suitable for systems operating at a pressure of 480 psi and maximum temperatures of 140 degrees Fahrenheit
• One end has a one inch male pipe thread (MPT) connection, while the other end features a three quarter inch slip connection
• This reducing male adapter allows for versatile plumbing connections, ensuring compatibility with various pipe sizes
• The Westlake Pipe & Fittings 436-131 is a reducing male adapter made from molded PVC
• Lightweight and easy to install, suitable for professionals and DIYers
• Smooth flow transition to minimize turbulence and pressure loss
• Solvent-weld socket end for pressure-tight, permanent joints
• It connects pipes with different diameters effectively

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