Westlake Schedule 40 PVC Reducing Male Adapter 436-251 – 2" x 1.5" MPT x Slip

PVC Plumbing Fitting

Westlake 2" x 1.5" Schedule 40 PVC Reducing Male Adapter

Heavy-duty Schedule 40 PVC reducing male adapter designed to transition from 2" male pipe threads to 1.5" slip connections in pool, spa, and plumbing systems.

Warranty Information

1-Year Manufacturer Warranty

Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.

Westlake Schedule 40 PVC Reducing Male Adapter (436-251) is designed to transition between different pipe sizes while connecting threaded and solvent-weld plumbing components. The fitting features a 2-inch male pipe thread (MPT) connection and a 1.5-inch slip socket, making it ideal for adapting plumbing layouts in pool and spa systems.

Manufactured from durable Schedule 40 PVC, this fitting provides excellent corrosion resistance and long-term reliability. It is suitable for swimming pools, spas, water features, irrigation systems, and general water circulation applications where dependable threaded-to-slip connections are required.

Key Features

Reducing Male Adapter
Transitions from 2" male threads to 1.5" slip plumbing connections. MPT x Slip Connections
Connects threaded fittings to solvent-weld PVC piping. Schedule 40 PVC
Durable construction designed for pool, spa, and plumbing applications. Corrosion Resistant
Will not rust and is suitable for continuous water exposure. Leak-Resistant Design
Provides a secure connection when properly installed with thread sealant and PVC cement. Multiple Applications
Ideal for pool, spa, irrigation, and water circulation systems.

Applications

• Swimming pool circulation systems
• Spa plumbing installations
• Equipment pad plumbing
• Water feature plumbing systems
• Irrigation and water transfer applications
• Converting threaded connections to solvent-weld PVC piping

Use appropriate PVC primer and solvent cement on the slip connection, along with a suitable thread sealant on the male threaded connection. Always follow local plumbing codes and manufacturer installation recommendations.

Specifications

SKU	436-251
Brand	Westlake Pipe & Fittings
Product Type	Schedule 40 PVC Reducing Male Adapter
Connection Type	Male Pipe Thread (MPT) x Slip
Pipe Size	2" MPT x 1.5" Slip
Material	Schedule 40 PVC
Colour	White
Maximum Temperature	140°F (60°C)
Installation Method	Threaded x Solvent Weld
Warranty	1-Year Manufacturer Warranty

Frequently Asked Questions

What is this fitting used for?
This reducing male adapter connects a 2-inch female threaded fitting to a 1.5-inch Schedule 40 PVC pipe using a slip (solvent-weld) connection. Can this be used for pool plumbing?
Yes. It is commonly used on pool and spa circulation systems, equipment pads, water features, and other Schedule 40 PVC plumbing applications. What type of pipe does the slip end accept?
The slip socket is designed to accept 1.5-inch Schedule 40 PVC pipe using solvent-weld installation. Does this require PVC glue?
Yes. The slip connection requires PVC primer (IPS Primer – 12211) and solvent cement (IPS Cement – 12725). A suitable thread sealant should also be used on the male threaded connection.