Westlake Pipe & Fittings 436030 3″ MPT x SKT Male Adapter

Description

Westlake Pipe & Fittings 436030 3″ MPT x SKT Male Adapter

The Westlake Pipe & Fittings 436030 3″ Male Adapter is a high-performance PVC plumbing fitting designed to provide a reliable and durable transition between two different connection types within a piping system. Manufactured by Westlake Pipe & Fittings, one of North America’s most respected producers of PVC pipe and fittings, this adapter is engineered for use in a wide range of residential, commercial, industrial, agricultural, and pool & spa plumbing applications.

At its core, the 436030 adapter is part of Westlake’s Schedule 40 PVC fitting line, meaning it’s made from rigid polyvinyl chloride (PVC) that conforms to common plumbing standards for strength, reliability, and chemical resistance. Schedule 40 PVC is widely used in pressurized systems, water distribution, and wastewater applications because it combines a robust mechanical profile with ease of installation. The PVC construction offers corrosion resistance that outperforms certain metal fittings in many environments, making it a popular choice for builders, plumbers, and irrigation specialists alike.

The unique design of this adapter incorporates two distinct ends: a male pipe thread (MPT) and a socket (SKT) connection. The MPT end features a threaded male interface that conforms to standard National Pipe Thread (NPT) dimensions, which allows it to thread securely into female-threaded fittings, valves, or equipment. The socket end, on the other hand, is designed to accept a pipe that is inserted and then solvent-welded in place. This type of connection is commonly referred to as “slip” or “socket weld” and requires a suitable PVC primer and solvent cement to form a permanent, leak-proof joint.

This 3-inch nominal size adapter supports robust fluid flow and is particularly suited to systems with larger diameters, such as household main lines, industrial fluid transfer systems, and pool circulation piping. The long body format of this adapter provides additional surface area on the socket end, which can make solvent cementing more accessible and easier for installers. The extended length also improves the transition between connection types by offering a smoother internal path, reducing turbulence and potential pressure drops at the fitting interface.

The material properties of Schedule 40 PVC used in the 436030 adapter are a key component of its performance. PVC is lightweight yet strong, resisting cracking and damage during typical installation and service life. It is non-toxic and suitable for potable water systems (where permitted), irrigation, agricultural irrigation systems, pool and spa plumbing, and other fluid transfer tasks that operate within its temperature and pressure limitations. The PVC formulation is inherently resistant to corrosion from chemicals and water, making it suitable for long-term use without rust or degradation common to some metal counterparts.

Typical operating parameters for Schedule 40 PVC fittings include a temperature range up to about 140 °F (60 °C), which covers most domestic and commercial water systems. This adapter is most often rated for intermediate pressure systems, capable of handling typical residential water service pressures and moderate mechanical loads. Carefully following solvent welding and installation practices ensures strong joints that maintain system integrity over time.

While the 436030 adapter specifically meets Schedule 40 PVC criteria, Westlake’s broader product range supports ASTM, NSF, and other common certifications depending on the region and product line. This helps ensure compatibility with other PVC fittings and system components. The brand’s reputation for quality and durability means that contractors and engineers can specify these adapters with confidence in system design and performance.

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 436030 3″ MPT x SKT Male Adapter Features:

• Constructed from high-quality Schedule 40 PVC, offering durability and corrosion resistance
• Suitable for potable water, pool, spa, irrigation, and general plumbing systems
• Lightweight and easy to install with common PVC solvent cement techniques
• Designed to withstand temperatures up to approximately 140 °F (60 °C)
• Compatible with a wide range of Schedule 40 PVC fittings and piping
• Socket (SKT) on the other end for solvent-welded PVC pipe joining
• MPT (Male Pipe Thread) on one end for thread-in connections
• 3″ nominal size to support larger diameter plumbing systems
• Provides smooth flow transition between connection types

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