Large-diameter pool plumbing demands fittings that maintain alignment, strength, and flow integrity under constant pressure. The American Granby Schedule 40 2 1/2” PVC Coupling (Slip x Slip) is a professional-grade fitting designed to permanently join two sections of 2 1/2” PVC pipe into a single, continuous run using a strong solvent-weld connection.

This coupling is commonly used in high-flow residential pools, light commercial systems, and oversized equipment pad installations where 2 1/2” plumbing is specified to reduce head loss and support higher pump output. Manufactured specifically for pool and spa environments, it provides consistent fit, proper pressure handling, and long-term resistance to pool chemicals and outdoor exposure.

This is not a general plumbing coupling—it is engineered for real-world pool circulation systems where reliability is critical.

Why 2 1/2” PVC Couplings Matter in Pool Plumbing

2 1/2” PVC pipe is typically used in systems designed for higher flow rates and improved hydraulic efficiency. Any weakness at a joint in large-diameter plumbing can lead to leaks, misalignment, or reduced system performance.

The American Granby 2 1/2” PVC coupling is used to:

• Join two straight sections of 2 1/2” PVC pipe

• Repair damaged high-flow circulation lines

• Extend suction or return runs on large systems

• Maintain proper alignment on oversized equipment pads

Using a true Schedule 40 coupling ensures uniform internal diameter and dependable long-term performance.

Slip x Slip Connections for Permanent Installations

This fitting features Slip x Slip (socket x socket) connections, allowing both pipe ends to be solvent-welded directly into the coupling.

Slip connections provide:

• Strong, permanent joints

• Smooth internal flow continuity

• Reliable, leak-resistant performance when installed correctly

Once cemented, the coupling becomes a fixed part of the plumbing system, suitable for both exposed equipment pads and underground installations.

Schedule 40 PVC Built for High-Flow Pool Systems

Manufactured from rigid Schedule 40 PVC, this coupling is pressure-rated for residential and light commercial pool systems using larger-diameter plumbing. It is fully compatible with standard 2 1/2” Schedule 40 PVC pipe used in high-flow circulation designs.

The material resists:

• Chlorinated and chemically treated water

• Temperature fluctuations

• Cracking and deformation under pressure

• Long-term outdoor and underground exposure

This ensures dependable performance throughout the life of the pool system.

Common Pool & Spa Applications

The American Granby SCH 40 2 1/2” PVC Coupling is commonly used for:

• High-flow pool circulation plumbing

• Main suction and discharge lines

• Large equipment pad layouts

• Pump, filter, and heater connections

• Underground plumbing repairs

• New pool construction and major replumbing projects

Anywhere two straight sections of 2 1/2” pool plumbing must be securely joined, this coupling is the correct solution.

Trusted by Pool Builders and Service Professionals

Large-diameter plumbing leaves little margin for error. Pool builders and service technicians rely on precision-molded couplings to avoid leaks, misalignment, and callbacks.

American Granby fittings are trusted because they provide:

• Accurate dimensions for proper pipe fit

• Strong, consistent solvent-weld joints

• Proven durability in real-world pool environments

This coupling is a standard component in professional high-flow pool plumbing installations.

Specifications

Installation Notes

• Designed for use with 2 1/2” Schedule 40 PVC pipe

• Use approved PVC primer and cement for pool plumbing

• Dry-fit pipes before cementing to confirm alignment

• Allow full cure time before pressurizing the system

Proper installation ensures leak-free performance and long-term system reliability.

Buy with Confidence from Benchmark Pool Supply

When you purchase the American Granby SCH 40 2 1/2” PVC Coupling SL x SL from Benchmark Pool Supply, you’re buying professional-grade pool plumbing components selected for real-world service conditions.

You receive:

• Genuine American Granby fittings

• Parts intended specifically for pool and spa systems

• Fast shipping from a knowledgeable pool supply team

• Support from professionals who understand pool plumbing

This is the same type of coupling trusted by pool builders and service technicians—not generic plumbing substitutes.